G5725 致新代理商 GMT DC-DC系列 同步降压转换器 Synchronous Step Down Converter

Part Number	Vin (V)min.	Vin (V) max.	IOUT (A)	FSW (k Hz)	FB (V)	Dmax (%)	IQ(uA)	Note	Package
G5725	2.5	6	1	1,000	0.6	100	50	EN, GND, LX, VIN, VFB, SS=2ms	T/SOT-23-5

 

1MHz 1A Synchronous Step Down Converter Regulator

General Description
The G5725 is a high efficiency monolithic synchronous buck  regulator  using  a  constant  frequency,  current  mode  architecture.  Supply  current  during  operation  is  only  50μA  and  drops  to  <1μA  in  shutdown.  The  2.5V  to  6V  input  voltage  range  makes  the  G5725  ideally  suited  for  single  Li-Ion  battery-powered  applications.  100%  duty  cycle  provides  low  dropout  operation,  ex-tending battery run time in portable systems. Switching frequency is internally set at 1MHz, allowing the use of small  surface  mount  inductors  and  capacitors.  The  internal  synchronous  switch  increase  efficiency  and  eliminates  the  need  for  an  external  Schottky  diode.  Built-in  soft  start  function  eliminates  in-rush  current  that could damage the system.

Features „
High Efficiency: Up to 93% „
Low Quiescent Current: Only 50μA During Op-eration
„Internal Soft Start Function „
1A Output Current „
2.5V to 6V Input Voltage Range
„1MHz Switching Frequency „
No Schottky Diode Required „
100% Duty Cycle in Dropout Operation „
0.6V Reference Allows Low Output Voltages „
<1μA Shutdown Current
„Current Mode Operation for Excellent Line and Load Transient Response „
Over Temperature Protected„
RoHS Compliant

Applications „
Cellular Telephones „
Personal Information Appliances „
Microprocessors and DSP Core Supplies
„Wireless and DSL Modems „
Digital Still and Video Cameras „
MP3 Players „
Portable Instruments

Pin  Configuration                               Typical  Application  Circuit      

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》。