G5139 台湾致新代理商 GMT DC-DC系列 LED背光驱动器
Boost  White  LED  Driver  with  PWM  Brightness  Control in 2mm x 2mm TDFN Package

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

ORDER NUMBER	MARKING	TEMP. RANGE	PACKAGE (Green)
G5139RBBU	5139	~40°C to 85°C	TDFN2X2-6
G5139RBBD	5139	~40°C to 85°C	TDFN2X2-6

Note: RB :  TDFN2X2-6 B : Bonding Code U & D: Tape & Reel

Pin Configuration                                                                                             Typical Application Circuit

台湾GMT致新代理商，欢迎咨询13244774414，还有更多精彩致新电源管理IC分享《致新DC-DC》，《DC-DC芯片》。