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MAX1691O 200mA, Automotive, Ultra-Low WH wHkJ vaw m WHk

General Description

The MAX16910 ultra-low quiescent current, high-voltage

linear regulator is ideal for use in automotive and battery-

operated systems. The device operates from a +3.5V

to +30V input voltage, delivers up to 200mA of load

current, and consumes only 20µA of quiescent current at

no load. The device consumes only 1.6µA current when

in shutdown. The input is +45V transient tolerant and is

designed to operate under load-dump conditions. The

MAX16910 can be configured as either fixed output volt-

age (+3.3V or +5V) or adjustable output voltage using an

external resistive divider.

The MAX16910 features an open-drain, active-low RESET

output with fixed thresholds offered at 92.5% and 87.5%

of the output voltage. The RESET output remains low for

a fixed period of 60µs after the output voltage exceeds

its threshold. The RESET delay can be extended with an

external capacitor.

The MAX16910 includes an enable input, short-

circuit protection, and thermal shutdown. The MAX16910

operates over the -40°C to +125°C automotive tempera-

ture range. The device is available in a space-saving,

thermally enhanced, 3mm x 3mm, 8-pin TDFN package

and 5mm x 4mm, 8-pin SO package.

Applications

●Automotive

●Industrial

●Telecom

Benefits and Features

●Enables System Designers to Meet Stringent Module

Requirements for 100μA Quiescent Current

• Low 20µA Quiescent Current

• Up to 200mA Output-Current Capability

• User-Selectable Output Voltage (+3.3V or +5V

Fixed and +1.5V to +11V Adjustable with

External Resistive Divider)

● Tiny Output Capacitors Reduce Board Space and

BOM Cost

• Stable Operation with 4.7µF Output Capacitor

●Accurate RESET Output with Adjustable Delay

Eliminates Need for Separate Reset IC

• Open-Drain RESET Output with Adjustable Delay

• Fixed-Reset Threshold Options: 87.5% or 92.5%

● Operates Through Cold-Crank Conditions

• Low-Dropout Voltage of 280mV at 200mA

• +3.5V to +30V Wide Input Voltage Range,

+45V Tolerant

●Robust Performance in Automotive Environment

• Thermal and Short-Circuit Protection

• High-Voltage Enable Input (+45V)

• Operating -40°C to +125°C Temperature Range

• Automotive Qualified

Ordering Information/Selector Guide appears at end of data

sheet.

19-4816; Rev 8; 2/18

Typical Operating Circuits

Typical Operating Circuits continued on next page.

MAX16910

1µF

OUT

SETOV

RESET

ENABLE

1nF

(1.25ms DELAY)

4.7µF

VCC

RESET

I/O

5V FIXED OUTPUT

TIMEOUT

SET

GND

14V

BATTERY

µC

10kI

MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

EVALUATION KIT AVAILABLE

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Typical Operating Circuits (continued)

MAX16910

1µF

OUT

SETOV

RESET

ENABLE

1nF

(1.25ms DELAY)

4.7µF

VCC

RESET

I/O

3.3V FIXED OUTPUT

TIMEOUT

SET

GND

14V

BATTERY

µC

10kI

MAX16910

1µF

OUT

SETOV

RESET

SET

1nF

(1.25ms DELAY)

4.7µF

VCC

RESET

I/O

ADJUSTABLE OUTPUT

TIMEOUT

GND

ENABLE

14V

BATTERY

µC

10kI

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MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

(All voltages referenced to GND.)

IN, ENABLE, SET.................................................. -0.3V to +45V

OUT, RESET (open-drain output)............................-0.3V to +12V

SETOV, TIMEOUT....................................................-0.3V to +6V

Maximum Current (all pins except IN and OUT)...............50mA

Continuous Power Dissipation (TA = +70°C)

TDFN (derate 24.4mW/°C above +70°C)*.............1951mW

SO (derate 23.3mW/°C above +70°C)*................1861mW

Operating Temperature Range..........................-40°C to +125°C

Junction Temperature......................................................+150°C

Storage Temperature Range..............................-65°C to +150°C

Lead Temperature (soldering, 10s).................................+300°C

Soldering Temperature (reflow) ......................................+260°C

ESD Results―Human Body Model (MAX16910E) ............. 2.5kV

TDFN

Junction-to-Ambient Thermal Resistance (qJA) ..........41°C/W

Junction-to-Case Thermal Resistance (qJC) .................8°C/W

Junction-to-Ambient Thermal Resistance (qJA) ..........53°C/W

Junction-to-Case Thermal Resistance (qJC) .................7°C/W

(Note 1)

(VIN = VENABLE = +14V, CTIMEOUT = open, CIN = 1µF, COUT = 4.7µF, unless otherwise noted. TA = -40°C to +125°C, TA P TJ P

+150°C, unless otherwise noted. Typical values are TA = +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage Range VIN Continuous 3.5 30 V

For P 400ms 45

Supply Current ILOAD = 0mA, SET = GND, VOUT = 5V 20 30 FA

Shutdown Supply Current ISHDN ENABLE = GND, TA = +25NC 1.6 3 FA

ENABLE = GND, -40NC P TA P +125NC 3

Output Voltage

(5V Fixed Output Setting) VOUT50

1mA P ILOAD P 200mA,

VIN = 6V to 30V (Note 3) 4.9 5.0 5.1

1mA P ILOAD P 50mA,

VIN = 6V to 30V, TJ = +150°C (Notes 3, 4) 4.9 5.0 5.1

Output Voltage

(3.3V Fixed Output Setting) VOUT33

1mA P ILOAD P 200mA, VIN = 4.8V to 30V

(Note 3) 3.234 3.3 3.366

1mA P ILOAD P 50mA, VIN = 4.8V to 30V,

TJ = +150°C (Notes 3, 4) 3.234 3.3 3.366

Adjustable Output-Voltage Range VOUT 1.5 11.0 V

SETOV FB Voltage VSETOV ILOAD = 1mA (Note 4) 1.225 1.25 1.275 V

Dropout Voltage (Note 5) DVDO

ILOAD = 200mA, SET = GND, SETOV =

HIGH, VOUT(NORM) = +5.0V 280 600

ILOAD = 50mA, SET = GND, SETOV =

HIGH, VOUT(NORM) = +5.0V, TJ = +150°C

(Notes 3, 4)

600

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-

tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

Absolute Maximum Ratings

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer

board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.

Package Thermal Characteristics

*As per JEDEC51 Standard (multilayer board).

Electrical Characteristics

www.maximintegrated.com Maxim Integrated

│

MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

(VIN = VENABLE = +14V, CTIMEOUT = open, CIN = 1µF, COUT = 4.7µF, unless otherwise noted. TA = -40°C to +125°C, TA P TJ P

+150°C, unless otherwise noted. Typical values are TA = +25°C.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Short-Circuit Output Current Limit ISC Output shorted to GND (MAX16910C__) 230 330 mA

Thermal Shutdown (Note 6) +180 NC

Thermal Shutdown Hysteresis (Note 6) +25 NC

Line Regulation

(5V Fixed Output Setting) VIN = 6V to 30V, ILOAD = 1mA 1 mV

Line Regulation

(3.3V Fixed Output Setting) VIN = 4.8V to 30V, ILOAD = 1mA 1 mV

Load Regulation

(5V Fixed Output Setting) ILOAD = 1mA to 200mA 12 mV

Load Regulation

(3.3V Fixed Output Setting) ILOAD = 1mA to 200mA 12 mV

Power-Supply Rejection Ratio PSRR ILOAD = 10mA, f = 100Hz, 500mVP-P

(Note 6) 60 dB

Startup Response Time tSTART Rising edge of VIN to VOUT, ILOAD = 50mA

(Note 6) 160 Fs

TIMEOUT INPUT

TIMEOUT Ramp Current ITO TIMEOUT connected to GND 0.600 1.0 1.650 FA

TIMEOUT Ramp Delay 1.25 ms/nF

RESET Default Timeout Period VOUT rising, TIMEOUT = OPEN 30 60 90 Fs

RESET OUTPUT

RESET Threshold MAX16910__9/V+, VOUT falling 90 92.5 94 % of

VOUT

MAX16910__8/V+, VOUT falling 85 87.5 89

RESET Threshold Hysteresis VOUT rising 5 % of

VOUT

OUT to RESET Delay VOUT falling (Note 6) 4Fs

RESET Output-Voltage Low

(Open-Drain) VOL ISINK = 0.5mA, RESET asserted 0.4 V

RESET Open-Drain Leakage

Current

RESET not asserted, RESET = 7V,

TA = +25NC1FA

RESET Open-Drain Leakage

Current RESET not asserted, RESET = 7V 0.03 FA

ENABLE

ENABLE Logic-Low VIL 0.4 V

ENABLE Logic-High VIH 2.4 V

ENABLE Pulldown Current (Note 7) 0.65 FA

SET INPUT

SET Input Current (All Modes) TA = +25NC -50 +50 nA

TJ = +150NC 0.2 FA

SET Logic-Low VILSET 0.4 V

Set Logic-High VIHSET 2.4 V

Electrical Characteristics (continued)

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│

MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

(VIN = VENABLE = +14V, CTIMEOUT = open, CIN = 1µF, COUT = 4.7µF, unless otherwise noted. TA = -40°C to +125°C, TA P TJ P

+150°C, unless otherwise noted. Typical values are TA = +25°C.) (Note 2)

Note 2: Production tested at TA = +25°C. Overtemperature limits are guaranteed by ATE characterization between -40°C P TJ ≤

+150°C, unless otherwise noted.

Note 3: Observe the absolute maximum power dissipation limits.

Note 4: Specification characterized up to +150°C operating junction temperature. Limits are guaranteed by bench characterization.

Note 5: Dropout voltage is defined as (VIN - VOUT) when VOUT is 2% below the value of VOUT for VIN = VOUT + 3V.

Note 6: Not production tested.

Note 7: ENABLE is internally pulled to GND.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

SETOV INPUT (TRI-MODE)

SETOV Input Leakage Current SET = HIGH, VSETOV = 5V

or SET = GND, VSETOV = 5V 1FA

SETOV Low-Level Input Voltage VILSETOV SET = GND, VSETOV < VILSETOV or places

device in +3.3V fixed output-voltage mode 0.4 V

SETOV High-Level Input Voltage VIHSETOV SET = GND, VSETOV > VIHSETOV or places

device in +5V fixed output-voltage mode

VOUT

- 0.4 V

Electrical Characteristics (continued)

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MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

}\ K(\i RESET

(VIN = VEN = +14V, CIN = 1µF, COUT = 4.7µF ceramic, TA = +25°C, unless otherwise noted.)

Typical Operating Characteristics

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (NC)

125

1007550250-25

-50 150

MAX16910 toc04

IIN (FA)

VIN = 30V

VIN = 14V

VIN = 6V

RESET THRESHOLD

vs. TEMPERATURE

TEMPERATURE (NC)

125

1007550250-25

4.3

4.6

4.9

5.2

5.5

4.0

-50 150

MAX16910 toc05

RESET THRESHOLD VOLTAGE (V)

MAX16910_9/V RISING

MAX16910_9/V FALLING

MAX16910_8/V RISING

MAX16910_8/V FALLING

VOUT = 5V

DROPOUT VOLTAGE vs. LOAD CURRENT

(5V OUTPUT)

LOAD CURRENT (mA)

DROPOUT VOLTAGE (V)

180160120 14040 60 80 10020

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0 200

MAX16910 toc06

TA = +150NC

TA = +125NC

TA = +25NC

TA = -40NC

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX16910 toc01

VIN (V)

IIN (FA)

252015105

ILOAD = 0

GROUND CURRENT

vs. LOAD CURRENT

ILOAD (mA)

IGND (FA)

18016014012010080604020

0 200

MAX16910 toc02

TA = +125NCTA = +25NC

TA = -40NC

VOUT = 3.3V

SHUTDOWN SUPPLY CURRENT

vs. SUPPLY VOLTAGE

VIN (V)

IIN (FA)

252015105

MAX16910 toc03

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MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

RESET

(VIN = VEN = +14V, CIN = 1µF, COUT = 4.7µF ceramic, TA = +25°C, unless otherwise noted.)

Typical Operating Characteristics (continued)

DROPOUT VOLTAGE vs. LOAD CURRENT

(3.3V OUTPUT)

LOAD CURRENT (mA)

DROPOUT VOLTAGE (V)

180160120 14040 60 80 10020

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0 200

MAX16910 toc07

TA = +150NC

TA = +125NC

TA = +25NC

TA = -40NC

OUTPUT VOLTAGE vs.

SUPPLY VOLTAGE

VIN (V)

VOUT (V)

3530252015105

0.5

1.0

1.5

2.0

2.5

3.0

3.5

MAX16910 toc08

ILOAD = 0mA

SETOV = GND

SET = GND

OUTPUT VOLTAGE vs.

SUPPLY VOLTAGE

353020 2510 155

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

MAX16910 toc09

VIN (V)

VOUT (V)

ILOAD = 0mA

SETOV = OUT

SET = GND

OUTPUT VOLTAGE

vs. TEMPERATURE

MAX16910 toc10

TEMPERATURE (°C)

OUTPUT VOLTAGE (V)

12080400

4.96

4.97

4.98

4.99

5.00

5.01

5.02

5.03

5.04

5.05

4.95

-40

IOUT = 10mA

RESET TIMEOUT PERIOD vs.

TEMPERATURE

TEMPERATURE (NC)

TIMEOUT PERIOD (Fs)

125100-25 0 25 50 75

-50 150

CTIMEOUT UNCONNECTED

MAX16910 toc11

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

FREQUENCY (kHz)

PSRR (dB)

1001010.1

-60

-50

-40

-30

-20

-10

-70

0.01 1000

MAX16910 toc12

ILOAD = 10mA

VIN = 14V + 0.5VP-P

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MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

RESET RESET

(VIN = VEN = +14V, CIN = 1µF, COUT = 4.7µF ceramic, TA = +25°C, unless otherwise noted.)

Typical Operating Characteristics (continued)

RESET OUTPUT VOLTAGE

vs. SINK CURRENT

RESET SINK CURRENT (mA)

RESET OUTPUT VOLTAGE (V)

10.10.01

0.3

0.6

0.9

1.2

1.5

0.001 10

MAX16910 toc13

LOAD-TRANSIENT RESPONSE

(5V OUTPUT)

MAX16910 toc15

IOUT

VOUT

(AC-COUPLED)

100mV/div

180mA

10mA

200Fs/div

LOAD-TRANSIENT RESPONSE

(3V OUTPUT)

MAX16910 toc16

IOUT

VOUT

(AC-COUPLED)

100mV/div

180mA

10mA

200Fs/div

LINE-TRANSIENT RESPONSE

(5V OUTPUT)

MAX16910 toc17

VIN

VOUT

(AC-COUPLED)

200mV/div

28V

2ms/div

LINE-TRANSIENT RESPONSE

(3.3V OUTPUT)

MAX16910 toc18

VIN

VOUT

(AC-COUPLED)

200mV/div

28V

4.8V

2ms/div

RESET TIMEOUT PERIOD vs.

TIMEOUT CAPACITANCE

CTIMEOUT (nF)

TIMEOUT PERIOD (ms)

1010.1

100

1000

0.1

0.01 100

MAX16910 toc14

POWER-UP RESPONSE

MAX16910 toc20

VIN

VOUT

IOUT

170mA

14V

3.3V

40Fs/div

IOUT = 170mA

VEN = VIN

POWER-UP RESPONSE

MAX16910 toc19

VIN

VOUT

14V

3.3V

40Fs/div

IOUT = 0A

VIN = VEN

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MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

(VIN = VEN = +14V, CIN = 1µF, COUT = 4.7µF ceramic, TA = +25°C, unless otherwise noted.)

ENABLE STARTUP RESPONSE

MAX16910 toc21

VOUT

VIN

3.3V

40Fs/div

ENABLE STARTUP RESPONSE

MAX16910 toc22

VOUT

IOUT

VEN

3.3V

175mA

40Fs/div

LOAD-DUMP TRANSIENT RESPONSE

MAX16910 toc23

14V

VIN

42V

100ms/div

VOUT

(AC-COUPLED)

100mV/div

Typical Operating Characteristics (continued)

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MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

Pin Configurations

PIN NAME FUNCTION

1 IN Regulator Input. Bypass IN to GND with a 1FF (min) low-ESR ceramic capacitor.

2 ENABLE

Active-High Enable Input. Force ENABLE high (or connect to IN) to turn the regulator on. Pull

ENABLE low (or leave unconnected) to place the device in a low-power shutdown mode. ENABLE

is internally pulled down to GND through a 0.65FA current sink.

3 SET

Feedback Network Selector. Connect SET to GND when operating the MAX16910 in fixed output-

voltage mode (3.3V or 5V) using the internal feedback network. Connect SET to IN or any voltage

higher than 2.4V when an external feedback network (resistive divider) is used, operating the

MAX16910 in adjustable output-voltage mode.

4RESET

Active-Low, Open-Drain Reset Output. RESET asserts low when OUT is below the reset threshold,

and remains low for the duration of the reset timeout period after the reset conditions end. RESET

also asserts low when ENABLE is low and during thermal shutdown.

5 TIMEOUT

Reset-Timeout-Period Adjust Input. Internal capacitance produces a 60Fs default delay when

TIMEOUT is left unconnected. Connect a capacitor from TIMEOUT to GND to set a longer timeout

period than default.

6 SETOV

Regulated Output-Voltage Selector. Connect SETOV to OUT for a 5V fixed output, or connect

SETOV to GND for a 3.3V fixed output. SETOV becomes the feedback path when using an

external resistive divider for an adjustable output.

7 GND Ground

8OUT

Regulator Output. Bypass OUT to GND with a minimum of 4.7FF. Use a low-ESR, ceramic

capacitor (X7R, X5R) for optimal performance. The SETOV input controls the output voltage when

in fixed +3.3V or fixed +5V output-voltage mode. Using an external resistive divider between OUT

and SETOV sets adjustable output voltage from +1.5V to +11V.

— EP

Exposed Pad. EP is internally connected to GND. Connect EP to the ground plane to provide

a low thermal-resistance path from the thermal junction to the PCB. Do not use EP as the only

electrical connection to GND.

Pin Description

TDFN

MAX16910

TOP VIEW

TIMEOUT

SETOV

GND

OUT

RESET

SET

ENABLE

*EP

*CONNECT EXPOSED PAD TO GND.

SETOV

TIMEOUT

*EP

RESET

OUT

GNDENABLE

SET

TOP VIEW

MAX16910

*CONNECT EXPOSED PAD TO GND.

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MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

Detailed Description

The MAX16910 low-quiescent current, high-voltage lin-

ear regulator is ideal for use in automotive and battery-

operated systems. The device operates from an input

voltage of +3.5V to +30V, delivers up to 200mA of load

current, and consumes only 20µA of quiescent current

at no load. The input is +45V tolerant and is designed

to operate under load-dump conditions. The MAX16910

can be user configured as either a fixed output voltage

(+3.3V or +5V) or an adjustable output voltage using an

external resistive divider.

The MAX16910 features an open-drain, active-low RESET

output with fixed thresholds offered at 92.5% and 87.5%

of the output voltage. The RESET output remains low for

a fixed period of 60µs after the output voltage exceeds

its threshold. The RESET delay can be extended with an

external capacitor. The MAX16910 includes an enable

input short-circuit protection and thermal shutdown.

Fixed Output-Voltage Mode

The SET and SETOV inputs determine the output mode.

For the 5V fixed output-voltage mode (see the 5V fixed

output circuit in the Typical Operating Circuits), connect

SET to GND and SETOV to OUT. Place a 10kω resistor

between SETOV and OUT if expecting line transients

faster than 0.03V/μs. For the 3.3V fixed output-voltage

mode (see the 3.3V fixed output circuit in the Typical

Operating Circuits) connect SET to GND and SETOV to

GND.

Adjustable Output-Voltage Mode

For the adjustable output-voltage mode (see the adjust-

able output circuit in the Typical Operating Circuits),

connect SET to IN or a voltage > 2.4V and connect

SETOV to a resistive divider R1 and R2 between OUT

and GND. An output voltage between 1.5V and 11V can

be selected using the following equation:

VOUT = VSETOV x (1 + R1/R2)

where VSETOV = 1.25V and R2 should be less than or

equal to 100kω.

Functional Diagram

MAX16910

1.253V

ENABLE

1.156V (92.5%)

1.094V (87.5%)

OVERCURRENT

PROTECTION

THERMAL

PROTECTION

CONTROL

LOGIC

RESET

TIMEOUT

OUTPUT-

VOLTAGE

SELECT MUX

GND

TIMEOUT

RESET

SETOV

SET

OUT

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MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

ENABLE

ENABLE is an active-high, logic-level enable input that

turns the device on or off. Drive ENABLE high to turn the

device on. An internal 0.65µA pulldown current keeps the

MAX16910 in shutdown mode when driven by a three-

state driver in high-impedance mode, or an open-drain

driver. When in shutdown, the MAX16910 consumes only

1.6µA. ENABLE withstands voltages up to 45V, allowing

it to be driven by high-input level voltages or connected

to IN for always-on operation.

Thermal Protection

The MAX16910 features thermal protection. When the

junction temperature exceeds +180°C, an internal ther-

mal sensor turns off the pass transistor, and allows the

device to cool. The thermal sensor turns on the pass

transistor again after the junction temperature cools by

25°C. This results in a cycled output during continuous

thermal-overload conditions. Thermal protection protects

the MAX16910 in the event of fault conditions. For con-

tinuous operation, do not exceed the absolute maximum

junction temperature rating of +150°C.

Output Short-Circuit Current Limit

The MAX16910 features a 330mA current limit. The out-

put can be shorted to GND continuously without damage

to the device. During a short circuit, the power dissi-

pated across the pass transistor can quickly heat the

device. When the die temperature reaches +180°C, the

MAX16910 turns off the pass transistor and automatically

restarts after the die temperature has cooled by 25°C.

RESET Output

The MAX16910 features an active-low, open-drain reset

output. Once the monitored output voltage exceeds the

reset threshold voltage, RESET remains low for the reset

timeout period and then goes high. RESET changes from

high to low whenever the monitored output voltage drops

below the reset threshold voltage. RESET also asserts

low when ENABLE is low and during thermal shutdown.

Timeout

The MAX16910 features a reset timeout period adjustable

input. The internal capacitance produces a 60µs default

delay when TIMEOUT is left unconnected. Connect a

capacitor from TIMEOUT to GND to set a higher timeout

period than default. Use the following formula to deter-

mine the reset timeout capacitor:

CTIMEOUT = 0.8 x ITO x TTIMEOUT

where CTIMEOUT is in nF, ITO is in µA, and TTIMEOUT is

in ms.

For example, if ITO is 1µA, CTIMEOUT needs to be 8nF to

get a 10ms delay.

Applications Information

Output-Capacitor Selection and Regulator

Stability

For stable operation over the full temperature range, with

fixed 3.3V and 5.0V output voltages, use a low-ESR 4.7µF

capacitor. For resistor-programmed output voltages, a

10µF low-ESR ceramic capacitor is recommended for

stable operation. Use larger output-capacitor values

such as 22µF to reduce noise, improve load-transient

response and power-supply rejection. Some ceramic

dielectrics exhibit large capacitance and ESR variations

with temperature. To improve power-supply rejection and

transient response, use a capacitor larger than the mini-

mum 1µF capacitor between IN and GND.

Available Output-Current Calculation

The MAX16910 provides up to 200mA of continuous

output current. The input voltage range extends to 30V.

Package power dissipation limits the amount of output

current available for a given input/output voltage and

ambient temperature. Figure 1 shows the maximum

allowable power dissipation for these devices to keep the

junction temperature below +150°C. Figure 1 assumes

that the exposed metal pad of the MAX16910 is sol-

dered to a 1in2 of multilayer copper board. Use Figure

1 to determine the allowable package dissipation for a

given ambient temperature. Alternately, use the following

formulas to calculate the allowable power dissipation PD.

For the TDFN-EP package:

( )

1.951W for T 70 C

1.951W 0.0244 T 70 C for 70 C T 125 C



≤+ °







− × − ° + ° ≤ <+ °





For the SO-EP package:

( )

1.861W for T 70 C

1.861W 0.0233 T 70 C for 70 C T 125 C



≤+ °







− × − ° + ° ≤ <+ °





www.maximintegrated.com Maxim Integrated

│

MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

After determining the allowable power dissipation, cal-

culate the maximum allowable output current, without

exceeding the +150°C junction temperature, using the

following formula:

OUT(MAX) IN OUT

I VV

=−

The above equations do not include the negligible power

dissipation from self-heating due to the device ground

current.

Example 1 (TDFN-EP Package):

TA = +125°C, VIN = 16V, VOUT = 3.3V

Calculate the maximum allowable power dissipation at

the given temperature as follows:

( )

P 1.951W 0.0244 125 C 70 C 609mW

= − × °− ° =

And establish the maximum output current:

OUT(MAX) 609mW

I 48mA

16V 3.3V

= ≅

−

Example 2 (TDFN-EP Package):

TA = +50°C, VIN = 9V, VOUT = 5V

Calculate the maximum allowable power dissipation at

the given temperature as follows:

PD = 1.951W

Find the maximum output current:

OUT(MAX) OUT(MAX) SC

1.951W

I 488mA I I = 330mA (typ)

9V 5V

==⇒=

−

In Example 2, the maximum output current is calculated

as 488mA. The allowable output current cannot exceed

the given internal current limit for the device of 330mA

(typ).

Selecting Timeout Capacitor

The reset timeout period is adjustable to accommodate

a variety of microprocessor applications. Adjust the

reset timeout period by connecting a capacitor between

TIMEOUT and GND.

RP TO

TIMEOUT

1.25 C

t I

where tRP is in ms and CTIMEOUT is in nF.

Leave TIMEOUT unconnected to select the internally

fixed timeout period. CTIMEOUT must be a low-leakage

(< 10nA) type capacitor. Ceramic capacitors are recom-

mended; do not use capacitor values lower than 100pF

to avoid the influence of parasitic capacitances.

Exposed Pad

The MAX16910 package features an exposed thermal

pad on its underside that should be used as a heatsink.

This pad lowers the package’s thermal resistance by pro-

viding a direct heat-conduction path from the die to the

PCB. Connect the exposed pad and GND to the system

ground using a large pad or ground plane, or multiple

vias to the ground plane layer.

Figure 1. Calculated Maximum Power Dissipation vs. Ambient

Temperature

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

2.2

2.4

0 20 40 60 80 100 120 140

TEMPERATURE (°C)

PD (W)

1.951W

8-PIN TDFN-EP

1.861W

8-PIN SO-EP DERATE

24.4mW/°C

DERATE

23.3mW/°C

www.maximintegrated.com Maxim Integrated

│

MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

+Denotes a lead(Pb)-free/RoHS-compliant package.

/V denotes an automotive qualified part.

*EP = Exposed pad.

Chip Information

PROCESS: BiCMOS DMOS

Package Information

For the latest package outline information and land patterns, go

to www.maximintegrated.com/packages. Note that a “+”, “#”,

or “-” in the package code indicates RoHS status only. Package

drawings may show a different suffix character, but the drawing

pertains to the package regardless of RoHS status.

Ordering Information/Selector Guide

PACKAGE

TYPE

PACKAGE

CODE

OUTLINE

NO.

LAND

PATTERN NO.

8 TDFN-EP T833+2 21-0137 90-0059

8 SO-EP S8E+12 21-0111 90-0150

PART TEMP RANGE RESET THRESHOLD PIN-PACKAGE TOP MARK

MAX16910CATA8/V+ -40NC to +125NC87.5 8 TDFN-EP* (3mm x 3mm) +BLW

MAX16910CATA9/V+ -40NC to +125NC92.5 8 TDFN-EP* (3mm x 3mm) +BLV

MAX16910CASA8/V+ -40NC to +125NC87.5 8 SO-EP* (5mm x 4mm) —

MAX16910CASA9/V+ -40NC to +125NC92.5 8 SO-EP* (5mm x 4mm) —

MAX16910CATA8+ -40NC to +125NC87.5 8 TDFN-EP* (3mm x 3mm) +BOW

MAX16910CATA9+ -40NC to +125NC92.5 8 TDFN-EP* (3mm x 3mm) +BOV

MAX16910CASA8+ -40NC to +125NC87.5 8 SO-EP* (5mm x 4mm) —

MAX16910CASA9+ -40NC to +125NC92.5 8 SO-EP* (5mm x 4mm) —

MAX16910DATA8/V+ -40NC to +125NC87.5 8 TDFN-EP* (3mm x 3mm) +BRY

MAX16910DATA9/V+ -40NC to +125NC92.5 8 TDFN-EP* (3mm x 3mm) +BRZ

MAX16910DASA8/V+ -40NC to +125NC87.5 8 SO-EP* (5mm x 4mm) —

MAX16910DASA9/V+ -40NC to +125NC92.5 8 SO-EP* (5mm x 4mm) —

MAX16910EATA8/V+ -40NC to +125NC87.5 8 TDFN-EP* (3mm x 3mm) +BSG

MAX16910EATA9/V+ -40NC to +125NC92.5 8 TDFN-EP* (3mm x 3mm) +BSH

MAX16910EASA8/V+ -40NC to +125NC87.5 8 SO-EP* (5mm x 4mm) —

MAX16910EASA9/V+ -40NC to +125NC92.5 8 SO-EP* (5mm x 4mm) —

www.maximintegrated.com Maxim Integrated

│

MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

Revision History

REVISION

NUMBER

REVISION

DATE DESCRIPTION PAGES

CHANGED

07/09 Initial release —

110/10

Added a junction temperature range of -40°C to +150°C in the Features section,

updated Electrical Characteristics table with +150°C junction temperature in “5V

Output Voltage,” “3.3V Output Voltage,” and “Dropout Voltage” parameters, added

new Note 4, updated TOC 10 and Figure 1

1, 4, 5, 6, 8, 13

27/11 Removed the typ value from the “Dropout Voltage” ILOAD = 50mA parameter in the

Electrical Characteristics table 4

34/12 Added consumer-grade products to data sheet 1,14

46/14 Updated Package Thermal Characteristics section for SO package 4

510/14 Updated Junction-to-Case Thermal Resistance in Package Thermal Characteristics

section 4

68/15 Updated the Benefits and Features section 1

75/17 Updated Fixed Output-Voltage Mode section and added four new MAX16910D

variants in Ordering Information table 11, 14

82/18

Added ESD Results HBM for MAX16910E in Absolute Maximum Ratings section

and added four new variants (MAX16910EATA8/V+, MAX16910EATA9/V+,

MAX16910EASA8/V+, and MAX16910EASA9/V+) in Ordering Information table

3, 14

Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses

are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)

shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.

│

MAX16910 200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

Datenblatt für MAX16910 von Analog Devices Inc./Maxim Integrated

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