Datenblatt für MIC2940A/2941A von Microchip Technology

, gm M|02940Al41 A WU HHHHH E‘ O
2018 Microchip Technology Inc. DS20006000A-page 1
MIC2940A/41A
Features
• High Output Voltage Accuracy
• Guaranteed 1.25A Output
• Low Quiescent Current
• Low Dropout Voltage
• Extremely Tight Load and Line Regulation
• Very Low Temperature Coefficient
• Current and Thermal Limiting
• Input Can Withstand –20V Reverse Battery and
+60V Positive Transients
• Logic-Controlled Electronic Shutdown
• Output Programmable from 1.24V to 26V
(MIC2941A)
• Available in TO-220, TO-263, TO-220-5, and
TO-263-5 Packages
Applications
• Battery-Powered Equipment
• Cellular Telephones
• Laptop, Notebook, and Palmtop Computers
• PCMCIA VCC and VPP Regulation/Switching
• Barcode Scanners
• Automotive Electronics
• SMPS Post-Regulator/DC-to-DC Modules
• Voltage Reference
• High Efficiency Linear Power Supplies
General Description
The MIC2940A and MIC2941A are “bulletproof”
efficient voltage regulators with very low dropout
voltage (typically 40 mV at light loads and 350 mV at
1A), and low quiescent current (240 μA typical). The
quiescent current of the MIC2940A increases only
slightly in dropout, thus prolonging battery life. Key
MIC2940A features include protection against
reversed battery, fold-back current-limiting, and
automotive “load dump” protection (60V positive
transient).
The MIC2940A is available in both fixed voltage (3.3V,
5V, and 12V) and adjustable voltage configurations.
The MIC2940A-xx devices are three pin, fixed-voltage
regulators. A logic-compatible shutdown input is
provided on the adjustable MIC2941A, which enables
the regulator to be switched on and off.
Package Types
MIC2940A-X.XWT
TO-220-3 (T)
(Top View)
123
123
MIC2940A-X.XWU
TO-263-3 (U)
(Top View)
123 45
MIC2941AWU
TO-263-5 (U)
(Top View)
12345
MIC2941AWT
TO-220-5 (T)
(Top View)
1.25A Low Dropout Voltage Regulator
“Hi
MIC2940A/41A
DS20006000A-page 2 2018 Microchip Technology Inc.
Typical Application Circuits
MIC2940A-5.0 FIXED +5V
REGULATOR
VIN
+VIN
VOUT
VOUT = 5V
GND
10μF
+
IN
OUT
GND ADJUST
SHUTDOWN
V
V
SHUTDOWN
INPUT
IN
+V
OUT
V
26V
1
R100
pF
22μF
2
R
1.23V
REF
V
VOUT =V
REF x (1 + )
1
R
2
R
OFF
ON
1.2V
MIC2941A ADJUSTABLE
REGULATOR
OUT
GND ADJUST
V
VIN
+VIN
VOUT =VIN
MIC2941A WIDE INPUT VOLTAGE
RANGE CURRENT-LIMIT
MINIMUM INPUT-OUTPUT VOLTAGE
RANGES FROM 40MV TO 400MV,
DEPENDING ON LOAD CURRENT
MIC2941A 5V OR 3.3V SELECTABLE
REGULATOR WITH SHUTDOWN
SHUTDOWN
V
GND
OUT
+VIN
ADJ
SHUTDOWN
INPUT
100pF
2N2222
1%
300kΩ
+5V to +7V
1%
180kΩ
+
10μF
470 kΩ
OFF
ON
5V
3.3V
220kΩ
1%
VCC OUT
Adjust Pin Low = Enable Output. Q1 ON = 3.3V, Q1 OFF = 5.0V.
2018 Microchip Technology Inc. DS20006000A-page 3
MIC2940A/41A
Functional Block Diagram
IN FEEDBACK
OUT
SENSE
V TAP
SHDN
GND
ERROR
N
N
R30
30
N
Q40
Q42
Q6
Q1
10
R1
N
R2
N
Q41
R3
N
R4
N
R5
180
N
R6
140
N
R9
N
R8
N
R10
150
N
Q13 Q12 Q11
Q2
Q3 Q4
Q5
Q7
Q8
Q9
Q15A
R11
18
N
R11
20.6
N
C1
20
pF
R18
N
Q15A
Q16 Q17
Q20
Q21
Q14
Q25
Q26
Q24
Q22
Q23
R17
N
R15
N
R16
N
R17

Q19Q18
Q29
Q28
R27
R28
5
R24
N
5N
Q30 Q31
Q37 Q36
Q38
Q39
Q34
R22
N
R25
N
R26
N
R13
100
N
R14
350
N
R12
110
N
C2
40 pF
DENOTES CONNECTION ON FIXED
VOLTAGE VERSIONS ONLY
35 VSHUTDOWN
MIC2940A/41A
DS20006000A-page 4 2018 Microchip Technology Inc.
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Power Dissipation (PD).............................................................................................................. Internally Limited, Note 1
Input Supply Voltage ................................................................................................................................... –20V to +60V
Adjust Input Voltage (Note 2, Note 3)......................................................................................................... –1.5V to +26V
Shutdown Input Voltage ............................................................................................................................. –0.3V to +30V
Error Comparator Output Voltage............................................................................................................... –0.3V to +30V
Operating Ratings ‡
Input Supply Voltage (Note 4) ....................................................................................................................... +2V to +26V
† Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at those or any other conditions above those indicated
in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended
periods may affect device reliability.
‡ Notice: The device is not guaranteed to function outside its operating ratings.
Note 1: The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max) – TA)/θJA.
Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the reg-
ulator will go into thermal shutdown.
2: Circuit of MIC2941A Adjustable Regulator in the Typical Application Circuits section (upper right) with R1 ≥
150 kΩ. VSHUTDOWN ≥ 2V and VIN ≤ 26V, VOUT = 0.
3: When used in dual supply systems where the regulator load is returned to a negative supply, the output volt-
age must be diode clamped to ground.
4: Across the full operating temperature, the minimum input voltage range for full output current is 4.3V to 26V.
Output will remain in regulation at lower output voltages and low current loads down to an input of 2V at
25°C.
TABLE 1-1: ELECTRICAL CHARACTERISTICS
Electrical Characteristics: Limits in standard typeface are for TJ = +25°C and limits in boldface apply over the full
operating temperature range. Unless otherwise specified, VIN = VOUT + 1V, IL = 1000 mA, CL = 10 μF. The MIC2941A
is programmed to output 5V and has VSHUTDOWN 0.6V.
Parameter Symbol Min. Typ. Max. Units Conditions
Output Voltage Accuracy VO
–1 — 1
%
—
–2 — 2 —
–2.5 — 2.5 5mA ≤ IL ≤ 1A
Output Voltage Temperature
Coefficient ∆VO/∆T — 20 100 ppm/°C Note 1
Line Regulation
∆VO/VO
—0.060.50
%
IO = 10 mA,
(VOUT + 1V) ≤ VIN ≤ 26V
Load Regulation —0.040.16 I
L = 5 mA to 1.25A
——0.20 I
L = 5 mA to 1A, Note 2
Dropout Voltage, Note 3 VIN – VO
—60150
mV
IL = 5 mA
——180
—200250 IL = 250 mA
——320
—350450 IL = 1000 mA
——600
—400600 I
L = 1250 mA
as VSHUTDOWN
2018 Microchip Technology Inc. DS20006000A-page 5
MIC2940A/41A
Ground Pin Current, Note 4 IGND
—240500 µAI
L = 5 mA
—34.5
mA
IL = 250 mA
—— 6
—2235 IL = 1000 mA
——45
—3570 I
L = 1250 mA
Ground Pin Current at
Dropout, Note 4 IGNDDO —330600 µA
VIN = 0.5V less than designed VOUT
(VOUT 3.3), IL = 5 mA
Current-Limit ILIMIT —1.63.5 AV
OUT = 0V, Note 5
Thermal Regulation ∆VO/∆PD— 0.05 0.2 %/W Note 6
Output Noise Voltage
(10Hz to 100kHz)
IL = 100 mA
en
—400—
µVRMS
CL = 10 µF
—260— C
L = 33 µF
Electrical Characteristics for MIC2941A Only
Reference Voltage VREF
1.223 1.235 1.247
VNote 71.210 — 1.260
1.204 — 1.266
Adjust Pin Bias Current IBIAS
—2040 nA —
——60
Reference Voltage
Temperature Coefficient ∆VREF/∆T—20—ppm/°C—
Adjust Pin Bias Current
Temperature Coefficient ∆IBIAS/∆T—0.1—nA/°C—
TABLE 1-1: ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Characteristics: Limits in standard typeface are for TJ = +25°C and limits in boldface apply over the full
operating temperature range. Unless otherwise specified, VIN = VOUT + 1V, IL = 1000 mA, CL = 10 μF. The MIC2941A
is programmed to output 5V and has VSHUTDOWN 0.6V.
Parameter Symbol Min. Typ. Max. Units Conditions
as VSHUTDOWN
MIC2940A/41A
DS20006000A-page 6 2018 Microchip Technology Inc.
Shutdown Input
Input Logic Voltage VIL —1.30.7 VLow (ON)
VIH 2.0 — — High (OFF)
Shutdown Pin Input Current ISHDN
—3050
µA
VSHUTDOWN = 2.4V
——100
—450600 VSHUTDOWN = 26V
——750
Regulator Output Current in
Shutdown IOUT(SHDN)
—330µA Note 8
——60
Note 1: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total
temperature range.
2: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in
output voltage due to heating effects are covered by the thermal regulation specification.
3: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV
below its nominal value measured at 1V differential. At low values of programmed output voltage, the min-
imum input supply voltage of 4.3V over temperature must be taken into account.
4: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum
of the load current plus the ground pin current.
5: The MIC2940A features fold-back current limiting. The short-circuit (VOUT = 0V) current-limit is less than
the maximum current with normal output voltage.
6: Thermal regulation is defined as the change in output voltage at a time (T) after a change in power dissi-
pation is applied, excluding load or line regulation effects. Specifications are for a 200 mA load pulse at
VIN = 20V (a 4W pulse) for T = 10 ms.
7: VREF ≤ VOUT ≤ (VIN – 1 V), 4.3V ≤ VIN 26V, 5 mA < IL ≤ 1.25A, TJ ≤ TJ(MAX).
8: When used in dual supply systems where the regulator load is returned to a negative supply, the output
voltage must be diode clamped to ground.
TABLE 1-1: ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Characteristics: Limits in standard typeface are for TJ = +25°C and limits in boldface apply over the full
operating temperature range. Unless otherwise specified, VIN = VOUT + 1V, IL = 1000 mA, CL = 10 μF. The MIC2941A
is programmed to output 5V and has VSHUTDOWN 0.6V.
Parameter Symbol Min. Typ. Max. Units Conditions
2018 Microchip Technology Inc. DS20006000A-page 7
MIC2940A/41A
TEMPERATURE SPECIFICATIONS (Note 1)
Parameters Sym. Min. Typ. Max. Units Conditions
Temperature Ranges
Storage Temperature Range TS–65 — +150 °C —
Junction Operating Temperature Range TJ–40 — +125 °C —
Lead Temperature — — — +260 °C Soldering, 5s
Package Thermal Resistances
Thermal Resistance TO-220 JC —2—°C/W—
Thermal Resistance TO-263 JC —2—°C/W—
Note 1: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable
junction temperature and the thermal resistance from junction to air (i.e., TA, TJ, JA). Exceeding the
maximum allowable power dissipation will cause the device operating junction temperature to exceed the
maximum +125°C rating. Sustained junction temperatures above +125°C can impact the device reliability.
MIC2940A/41A
DS20006000A-page 8 2018 Microchip Technology Inc.
2.0 TYPICAL PERFORMANCE CURVES
FIGURE 2-1: Dropout Voltage vs. Output
Current.
FIGURE 2-2: Dropout Voltage vs.
Temperature.
FIGURE 2-3: Dropout Characteristics.
FIGURE 2-4: Ground Current vs. Output
Current.
FIGURE 2-5: Ground Current vs. Supply
Voltage.
FIGURE 2-6: Ground Current vs. Supply
Voltage.
Note: The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
0
100
200
300
400
500
0.00 0.25 0.50 0.75 1.00 1.25
DROPOUT VOLTAGE (mV)
OUTPUT CURRENT (A)
0
200
400
600
800
1000
-60 -30 0 30 60 90 120 150
DROPOUT VOLTAGE (mV)
TEMPERATURE (°C)
I
LOAD
=1.25A
0
1
2
3
4
5
6
0123456
OUTPUT VOLTAGE (V)
INPUT VOLTAGE (V)
I
LOAD
=5mA
I
LOAD
= 1.25A
0.1
1
10
40
11 0 100 1000 10000
GROUND CURRENT (mA)
OUTPUT CURRENT (mA)
10A
0
100
200
300
400
01234567 8
GROUND CURRENT (μA)
SUPPLY VOLTAGE (V)
FIXED 5V
I
LOAD
=5mA
0
10
20
30
40
50
0246810
GROUND CURRENT (mA)
INPUT VOLTAGE (V)
FIXED 3.3V DEVICE
I
LOAD
=1.25A
2018 Microchip Technology Inc. DS20006000A-page 9
MIC2940A/41A
FIGURE 2-7: Ground Current vs.
Temperature.
FIGURE 2-8: Ground Current vs.
Temperature.
FIGURE 2-9: Ground Current vs.
Temperature.
FIGURE 2-10: Fixed 3.3V Output Voltage
vs. Temperature.
FIGURE 2-11: Short-Circuit and Maximum
Current vs. Temperature.
FIGURE 2-12: Ground Current vs. Input
Voltage.
0.00
0.10
0.20
0.30
0.40
-60 -30 0 30 60 90 120 150
GROUND CURRENT (mA)
TEMPERATURE (°C)
I
LOAD
=5mA
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
-60 -30 0 30 60 90 120 150
GROUND CURRENT (mA)
TEMPERATURE (°C)
I
LOAD
=100mA
0
10
20
30
40
50
-60 -30 0 30 60 90 120 150
GROUND CURRENT (mA)
TEMPERATURE (°C)
I
LOAD
=1.25A
I
LOAD
= 100mA
3.20
3.22
3.24
3.26
3.28
3.30
3.32
3.34
3.36
3.38
3.40
-60 -30 0 30 60 90 120 150
OUTPUT VOLTAGE (V)
TEMPERATURE (°C)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
-60 -30 0 30 60 90 120 150
CURRENT (A)
TEMPERATURE (°C)
V
OUT
=V
NOMINAL
–0.5V
V
OUT
=0V
FIXED 3.3V
VERSION
3SAMPLES
-200
0
200
400
600
800
1000
-30 -20 -10 0 10 20 30
GROUND CURRENT (μA)
INPUT VOLTAGE (V)
R
LOAD
= 100
MIC2940A/41A
DS20006000A-page 10 2018 Microchip Technology Inc.
FIGURE 2-13: MIC2941A Shutdown
Current vs. Temperature.
FIGURE 2-14: Load Transient.
FIGURE 2-15: Load Transient.
FIGURE 2-16: MIC2941A Adjust Pin
Current vs. Temperature.
FIGURE 2-17: Line Transient.
FIGURE 2-18: Line Transient.
0
25
50
75
100
125
-60 -30 0 30 60 90 120 150
ENABLE CURRENT (μA)
TEMPERATURE (°C)
V
EN
=5V
V
EN
=2V
-500
-250
0
250
500
750
OUTPUT (mV)
-0.5
0.0
0.5
1.0
1.5
2.0
-5 0510
OUTPUT (A)
TIME (ms)
C
OUT
=10μF
5mA
-200
-100
0
100
200
OUTPUT (mV)
-0.5
0.0
0.5
1.0
1.5
2.0
-5 0510
OUTPUT (A)
TIME (ms)
C
OUT
= 100 μF
5mA
0
10
20
30
40
50
-60 -30 0 30 60 90 120 150
ADJUST PIN CURRENT (nA)
TEMPERATURE (°C)
I
LOAD
=5mA
-40
-20
0
20
40
OUTPUT (mV)
4
6
8
10
-0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
INPUT (V)
TIME (ms)
C
OUT
=10μF
-10
0
10
20
OUTPUT (mV)
4
6
8
10
-0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
INPUT (V)
TIME (ms)
C
OUT
=100μF
FREQUENCY 4H1)
2018 Microchip Technology Inc. DS20006000A-page 11
MIC2940A/41A
FIGURE 2-19: Output Impedance vs.
Frequency.
0.01
0.1
1
10
1x100
10x100
100x100
1x103
10x103
100x103
1x106
OUTPUT IMPEDANCE ( )
FREQUENCY (Hz)
I
LOAD
= 10mA
MIC2940A/41A
DS20006000A-page 12 2018 Microchip Technology Inc.
3.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1: PIN FUNCTION TABLE
MIC2940A
Pin Number MIC2941A
Pin Number Pin Name Description
1 4 Input Unregulated input supply.
2 3 Ground Ground.
3 5 Output Regulated output voltage.
— 1 Adjust Adjust (input): Connect to an external resistor voltage divider to set
the output voltage.
— 2 Shutdown Shutdown/Enable (input): Logic level low = Enable. Logic level high
= Shutdown.
2018 Microchip Technology Inc. DS20006000A-page 13
MIC2940A/41A
4.0 APPLICATION INFORMATION
4.1 External Capacitors
A 10 μF (or greater) capacitor is required between the
MIC2940A output and ground to prevent oscillations
due to instability. Most types of tantalum or aluminum
electrolytics will be adequate; film types will work, but
are costly and therefore not recommended. Many
aluminum electrolytics have electrolytes that freeze at
about –30°C, so solid tantalums are recommended for
operation below –25°C. The important parameters of
the capacitor are an effective series resistance of about
5Ω or less and a resonant frequency above 500 kHz.
The value of this capacitor may be increased without
limit.
At lower values of output current, less output
capacitance is required for output stability. The
capacitor can be reduced to 3.3 μF for current below
100 mA or 2.2 μF for currents below 10 mA. Adjusting
the MIC2941A to voltages below 5V runs the error
amplifier at lower gains so that more output
capacitance is needed. For the worst-case situation of
a 1.25A load at 1.23V output (Output shorted to Adjust)
a 22 μF (or greater) capacitor should be used.
The MIC2940A will remain stable and in regulation with
load currents ranging from 5 mA on up to the full 1.25A
rating. The external resistors of the MIC2941A version
may be scaled to draw this minimum load current.
A 0.22 μF capacitor should be placed from the
MIC2940A input to ground if there is more than 10
inches of wire between the input and the AC filter
capacitor or if a battery is used as the input.
4.2 Programming the Output Voltage
(MIC2941A)
The MIC2941A may be programmed for any output
voltage between its 1.235V reference and its 26V
maximum rating. An external pair of resistors is
required, as shown in the MIC2941A Adjustable
Regulator Typical Application Circuit.
EQUATION 4-1:
The minimum recommended load current of 1 μA
forces an upper limit of 1.2 MΩ on the value of R2, if the
regulator must work with no load (a condition often
found in CMOS in standby), IFB will produce a –2%
typical error in VOUT which may be eliminated at room
temperature by trimming R1. For better accuracy,
choosing R2 = 100 kΩ reduces this error to 0.17%
while increasing the resistor program current to 12 μA.
Because the MIC2941A typically draws 100 μA at no
load with SHUTDOWN open-circuited, this is a
negligible addition.
4.3 Reducing Output Noise
In reference applications, it may be advantageous to
reduce the AC noise present at the output. One method
is to reduce the regulator bandwidth by increasing the
size of the output capacitor. This is relatively inefficient,
as increasing the capacitor from 1 μF to 220 μF only
decreases the noise from 430 μV to 160 μVRMS for a
100 kHz bandwidth at 5V output. Noise can be reduced
by a factor of four with the MIC2941A by adding a
bypass capacitor across R1.
EQUATION 4-2:
Pick a bypass capacitor of about 0.01 µF. When doing
this, the output capacitor must be increased to 22 μF to
maintain stability. These changes reduce the output
noise from 430 μV to 100 μVRMS for a 100 kHz
bandwidth at 5V output. With the bypass capacitor
added, noise no longer scales with output voltage so
that improvements are more dramatic at higher output
voltages.
4.4 Automotive Applications
The MIC2940A is ideally suited for automotive
applications for a variety of reasons. It will operate over
a wide range of input voltages with very low dropout
voltages (40 mV at light loads), and very low quiescent
currents (240 μA typical). These features are
necessary for use in battery powered systems, such as
automobiles. It is a “bulletproof” device with the ability
to survive both reverse battery (negative transients up
to 20V below ground), and load dump (positive
transients up to 60V) conditions. A wide operating
temperature range with low temperature coefficients is
yet another reason to use these versatile regulators in
automotive designs.
FIGURE 4-1: ERROR Output Timing.
VOUT VREF 1R1
R2
-------
+


IFB
–R1=
Where:
VREF = The nominal 1.235V reference voltage.
IFB = The adjust pin bias current (nom. 20 nA).
CBYPASS 1
2R1200Hz
------------------------------------------
=
NOT *
VALID
NOT *
VALID
OUTPUT
VOLTAGE
4.75V
ERROR
INPUT
VOLTAGE
5V
1.3V
NNN
MIC2940A/41A
DS20006000A-page 14 2018 Microchip Technology Inc.
5.0 PACKAGING INFORMATION
5.1 Package Marking Information
ExampleTO-220*
XXXX XXXX
XXXXX
ExampleTO-263*
XXXX
XXX
XXXXX
XXXXXXXX
12WT 1823
2523P
MIC2940A
2941
AWU
6943P
Legend: XX...X Product code or customer-specific information
Y Year code (last digit of calendar year)
YY Year code (last 2 digits of calendar year)
WW Week code (week of January 1 is week ‘01’)
NNN Alphanumeric traceability code
Pb-free JEDEC® designator for Matte Tin (Sn)
*This package is Pb-free. The Pb-free JEDEC designator ( )
can be found on the outer packaging for this package.
●, ▲, ▼Pin one index is identified by a dot, delta up, or delta down (triangle
mark).
Note: In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information. Package may or may not include
the corporate logo.
Underbar (_) and/or Overbar (⎯) symbol may not be to scale.
3
e
3
e
TITLE 3 LEAD T0220 PACKAGE OUTLINE 5. RECOMMENDED LAND PATTERN DRAWING 4| TOZZO’3LD’PLil UNIT INCH Lead Frame Coppe: Alloy Lead Finish Ma:te Tm Tap We): Etm V‘s-w m? a “U” \r 5 { F‘EIS INCH 3‘ v MIN MAX H1 A 0160 awn k; 11025 mun m 0045 mm C: 0012 n‘oaz _\L n 0245 men 3 E 0385 0420 k F e DEED nun qg F 0045 mass H1 0541 new J1 nnsn men W 0146 D155 a um: mm L 0500 USED ul 3‘ m' n2 1‘ 7- U 0256 Ref 1 3 3 v was Ref P7 JEEP“ Note ram Length Ms‘ng gnu e plume “Mod neosurement n W
2018 Microchip Technology Inc. DS20006000A-page 15
MIC2940A/41A
3-Lead TO-220 Package Outline and Recommended Land Pattern
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
TITLE 3 LEAD T0263 PACKAGE OUTLINE & RECOMMENDED LAND PATTERN DRAWING tr | TOZEBiBLDiE’L’I | UNIT | INCH/MM A a E INCH MM fie mm m m m 31"“ I 4 um um A313 4557 T 0M7 W W 1345 91 Jlf ‘ c1 base me! 2:32 9159 L A1 C4 482 ‘ f A I 91 I 93 an 3‘ - 3- “1' 21-99121); a: w ~ u~ v a wuss .397 u nzss m sine m R r 7 R e TDP VIEW SIDE VIEW 1 U 0‘440t0‘002 7 ”I‘m 4'7 V E] 0640:0 002 0390:0002 0170t0‘002 0007} 0‘10 BSC 0060141002 BDTTDM VIEW SIDE VIEW 8 RECDMMENDED LAND PATTERN (UNIT: INCH) NDTES: EDDT LENGTH USE GUAGE PLANE METHDD MEASUREMENT 0010’
MIC2940A/41A
DS20006000A-page 16 2018 Microchip Technology Inc.
3-Lead TO-263 Package Outline and Recommended Land Pattern
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
TITLE 5 LEAD T0220 PACKAGE OUTLINE s. RECOMMENDED LAND PATTERN DRAWING # T02”075LD7PL*1 UNIT INCH Lead Frame Cepp : Alloy Lead Finish Ma:te Tm wP on me. A \f‘\ r \J i “T Hl u 0 3L 4 \ f :43 L H H H Eli» J] 1 a 3 4 5 JPPAH Nate ‘ Foot Lehgth us‘nQ 9 “ma measurement INCH MIN MAX PEIS am? 0022 y u 255 REF p w a Plans 0030'
2018 Microchip Technology Inc. DS20006000A-page 17
MIC2940A/41A
5-Lead TO-220 Package Outline and Recommended Land Pattern
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
TITLE 5 LEAD T0263 PACKAGE OUTLINE S RECOMMENDED LAND PATTERN DRAWING at | T026375LD7PL51 | UNIT \ INCH /MM "* P05 INCH MM 0+ + MIN MAX MIN MAX >94 T A 0170 0101 41310 41597 1 A1 0000 0012 0000 0305 K b 0026 0036 0660 0914 0A 1 T c1 0012 0023 07305 0584 91 11 0 0330 0351 e392 9159 C. c1 E 0396 0420 10050 101668 I ‘ e 0002 0072 1575 1829 p 0045 0055 114 1 9 L CA L "1 \62 H 0575 01525 141605 151876 \ f .11 07000 07120 27032 37048 01 7 K 0045 0066 1143 1676 L1 0090 0110 2286 2794 7 i 91 3~ 10' 3‘ 10 J L LED 93 j e: 1. 7. 1- 71 a 03 0‘ ' 0' 1 Gang: 330715 84 113- 221 10‘ 2a~ 0 0055 00 5 1397 1905 w M u 0255 Rep 5503 299 U v 0305 REF 770 Ref [‘91 r 1118 > F7 47 j BOWOM V‘EW S‘DE V‘EW 2 HUHHH NOTE: 0024—; 4—;1 70 w: 1 PACKAGE UUTL‘NE EXCLUSWE OF MOLD FLASH £4 MEAL 0000 2 PACKAGE oumNE 1NcLus1vE 0E PLAT‘NG MCKNESS W 3 FOOY LENGTH LIS‘NG (MUSE PLANE MUHOD MEASUREMENT (UN‘T mm) 0010" A1 PACKAGE TOP MARK MAv BE 1N TOP CENTER 00 LOWER LEFT CORNER 5 ALL D‘MENS‘ONS ARE 1N WCHEs/MLUMETERS,
MIC2940A/41A
DS20006000A-page 18 2018 Microchip Technology Inc.
5-Lead TO-263 Package Outline and Recommended Land Pattern
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging.
2018 Microchip Technology Inc. DS20006000A-page 19
MIC2940A/41A
APPENDIX A: REVISION HISTORY
Revision A (April 2018)
• Converted Micrel document MIC2940A/41A to
Microchip data sheet DS20006000A.
• Minor text changes throughout.
• Corrected bold values in Ta b l e 1 - 1 .
MIC2940A/41A
DS20006000A-page 20 2018 Microchip Technology Inc.
NOTES:
2018 Microchip Technology Inc. DS20006000A-page 21
MIC2940A/41A
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office.
Examples:
a) MIC2940A-3.3WT: MIC2940A, 3.3V Output
Voltage, –40°C to +125°C
Temperature Range, 3-Lead
TO-220, 50/Tube
b) MIC2940A-3.3WU-TR: MIC2940A, 3.3V Output
Voltage, –40°C to +125°C
Temperature Range, 3-Lead
TO-263, 750/Reel
c) MIC2940A-5.0WU: MIC2940A, 5.0V Output
Voltage, –40°C to +125°C
Temperature Range, 3-Lead
TO-263, 50/Tube
d) MIC2940A-12WT: MIC2940A, 12V Output
Voltage, –40°C to +125°C
Temperature Range, 3-Lead
TO-220, 50/Tube
e) MIC2940A-12WU-TR: MIC2940A, 12V Output
Voltage, –40°C to +125°C
Temperature Range, 3-Lead
TO-263, 750/Reel
f) MIC2941AWT: MIC2941A, Adjustable Output
Voltage, –40°C to +125°C
Temperature Range, 3-Lead
TO-220, 50/Tube
g) MIC2941AWU: MIC2941A, Adjustable Output
Voltage, –40°C to +125°C
Temperature Range, 5-Lead
TO-263, 50/Tube
h) MIC2941AWU-TR: MIC2941A, Adjustable Output
Voltage, –40°C to +125°C
Temperature Range, 5-Lead
TO-263, 750/Reel
Device:
MIC2940A: 1.25A Low Dropout Voltage Regulator,
Fixed Output Voltage
MIC2941A: 1.25A Low Dropout Voltage Regulator,
Adjustable Output Voltage + Shutdown
Output Voltage:
3.3 = 3.3V (MIC2940A only)
5.0 = 5.0V (MIC2940A only)
12 = 12V (MIC2940A only)
<blank>= Adjustable (MIC2941A only)
Junction
Temperature
Range: W = –40°C to +125°C, RoHS-Compliant*
Package:
T = 3-Lead TO-220 (MIC2940A)
5-Lead TO-220 (MIC2941A)
U = 3-Lead TO-263 (MIC2940A)
5-Lead TO-263 (MIC2941A)
Media Type: <blank>= 50/Tube
TR = 750/Reel (TO-263 Package only)
Note 1: Tape and Reel identifier only appears in the
catalog part number description. This identifier is
used for ordering purposes and is not printed on
the device package. Check with your Microchip
Sales Office for package availability with the
Tape and Reel option.
Device -X.X X X -XX
Part No. Output
Voltage
Junction
Temp. Range
Package Media Type
* RoHS-compliant with “high-melting solder” exemption.
MIC2940A/41A
DS20006000A-page 22 2018 Microchip Technology Inc.
NOTES:
YSTEM
2018 Microchip Technology Inc. DS20006000A-page 23
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights unless otherwise stated.
Trademarks
The Microchip name and logo, the Microchip logo, AnyRate, AVR,
AVR logo, AVR Freaks, BeaconThings, BitCloud, CryptoMemory,
CryptoRF, dsPIC, FlashFlex, flexPWR, Heldo, JukeBlox, KEELOQ,
KEELOQ logo, Kleer, LANCheck, LINK MD, maXStylus,
maXTouch, MediaLB, megaAVR, MOST, MOST logo, MPLAB,
OptoLyzer, PIC, picoPower, PICSTART, PIC32 logo, Prochip
Designer, QTouch, RightTouch, SAM-BA, SpyNIC, SST, SST
Logo, SuperFlash, tinyAVR, UNI/O, and XMEGA are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
and other countries.
ClockWorks, The Embedded Control Solutions Company,
EtherSynch, Hyper Speed Control, HyperLight Load, IntelliMOS,
mTouch, Precision Edge, and Quiet-Wire are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any
Capacitor, AnyIn, AnyOut, BodyCom, chipKIT, chipKIT logo,
CodeGuard, CryptoAuthentication, CryptoCompanion,
CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average
Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial
Programming, ICSP, Inter-Chip Connectivity, JitterBlocker,
KleerNet, KleerNet logo, Mindi, MiWi, motorBench, MPASM, MPF,
MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach,
Omniscient Code Generation, PICDEM, PICDEM.net, PICkit,
PICtail, PureSilicon, QMatrix, RightTouch logo, REAL ICE, Ripple
Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI,
SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC,
USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and
ZENA are trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated in
the U.S.A.
Silicon Storage Technology is a registered trademark of Microchip
Technology Inc. in other countries.
GestIC is a registered trademark of Microchip Technology
Germany II GmbH & Co. KG, a subsidiary of Microchip Technology
Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2018, Microchip Technology Incorporated, All Rights Reserved.
ISBN: 978-1-5224-2886-2
Note the following details of the code protection feature on Microchip devices:
• Microchip products meet the specification contained in their particular Microchip Data Sheet.
• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
• Microchip is willing to work with the customer who is concerned about the integrity of their code.
• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
QUALITYMANAGEMENTS
YSTEM
CERTIFIEDBYDNV
== ISO/TS16949==
6‘ ‘MICRDCHIP
DS20006000A-page 24 2018 Microchip Technology Inc.
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10/25/17