EVB_RT7310GE_01: 120mA @ 72V out, 90 ~ 132VAC

Summary

The RT7310 is a high power factor constant current LED driver which is optimized for the compatibility with phase-cut dimmers. It supports high power factor across a wide range of line voltages, and it drives the converter in the Quasi-Resonant (QR) mode to achieve higher efficiency. By using Primary Side Regulation (PSR), RT7310 controls the output current accurately without a shunt regulator and an opto-coupler at the secondary side, reducing the external component count, the cost, and the volume of the driver board.

The RT7310 supports phase-cut dimmers, including leading-edge (TRIAC) and trailing-edge dimmers.

RT7310 embeds comprehensive protection functions for robust designs, including LED open circuit protection, LED short circuit protection, output diode short-circuit protection, VDD Under-Voltage Lockout (UVLO), VDD Over-Voltage Protection (OVP), Over-Temperature Protection (OTP), and cycle-by-cycle current limitation.

Specifications

Manufacturer	Richtek USA Inc.
Category	Lighting
Sub-Category	LED Drivers - AC / Offline
Eval Board Part Number	EVB_RT7310GE_01-ND
Eval Board Supplier	Richtek USA Inc.
Eval Board	Normally In Stock
AC Voltage	115 V
Outputs and Type	1 Non-Isolated
Current Out	120 mA
Voltage Out (Max)	72 V
Efficiency @ Conditions	>85%, 90 ~ 132 VAC in, 72V @ 120 mA
Features	Current Limit (Adj. or Fixed) Dimming Control Open Circuit Protection PFC Short Circuit Protection Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	- Not Given
Component Count + Extras	36 + 4
Design Author	Richtek USA Inc.
Application / Target Market	Lighting: LED Commercial Lighting Lighting: LED Home Lighting
Voltage In	90 ~ 132 VAC
Power Factor	>0.95 @ 90 ~ 132 VAC
Standard(s)	CISPR22 B conducted EMI EN55015 B conducted EMI IEC 61000-3-2 Class C
Main I.C. Base Part	RT7310
Date Created By Author	2016-07
Date Added To Library	2025-06