G5139 台湾致新代理商 GMT DC-DC系列 LED背光驱动器

Part Number	Vin (V)min.	Vin (V) max.	LED CH	VO_MAX(V)	ISW(A)	FSW(k Hz)	VLED FB (V)	Note	Package
G5139	2.7	7	1	38.0	0.7	600	0.2* ENDuty	FB, COMP, GND, LX, EN, VIN, EN Brightness Control 5k~100k Hz	TDFN2X2-6

General Description
The G5139 boost converter contains a 0.46Ω internal switch. The IC operates at constant frequency 600 kHz, allowing the use of tiny, low cost and low height inductors and capacitors. The IC operates from a 2.7V to 7V supply voltage. High inrush current at start-up is eliminated using large compensation capacitor. Con-stant frequency current mode PWM architecture re-sults in low, predictable output noise. The G5139 in-cludes cycle-by-cycle 700mA current limit to maximize inductor current and over-temperature protection cir-cuit. The over-voltage protection will be enabled when VOUT exceeds 38V. The current of LED is set by a resistor connected between FB and GND. The G5139 is available in TDFN2X2-6 package.

Features
2.7V to 7V Input Voltage Range
600kHz Operating Frequency
38V High Output Voltage
Over-Voltage Protection
5kHz to 100kHz PWM Brightness Control
Built-in Cycle-by-Cycle Current Limit
0.2V Low Reference Voltage
TDFN2X2-6 Package

Applications
Cellular Phone
LED Module
Compact Back Light Module

Ordering Information