G5691 致新代理商 GMT DC-DC系列 同步降压转换器 G5691RB1U

Part Number	Vin (V)min.	Vin (V) max.	IOUT (A)	FSW (k Hz)	FB (V)	Dmax (%)	IQ(uA)	Note	Package
G5691	2.5	5.5	1	1500	0.6	100	50	NC, EN, VIN, LX, GND, FB, SS=2ms, VOUT = ADJ & 1.2V & 3.3V	TDFN2X2-6

 

1.5MHz, 1A High Efficiency Buck Converter

General Description
The  G5691  provides  complete  control  for  a  DC/DC  converter  optimized  for  high-performance  microproc-essor  applications.  It  is  operated  on  current  mode  ar-chitecture  for  excellent  line  and  load  transient  re-sponse.  1.5MHz  operation  frequency  is  allowing  the  use  of  small  surface  mount  inductor  and  capacitor.  The  internal  synchronous  switch  increases  efficiency  and eliminates the need for an external Schottky diode. The   G5691   is   a   family   of   low-noise   synchronous   step-down  DC/DC  converters  that  is  ideally  suited  for  systems powered from a 1-cell Li-ion battery or from a 3-cell  to  4-cell  NiCd,  NiMH,  or  alkaline  battery.  It  can  also be used to USB-Based power system.

Features „
Input voltage: 2.5V ~5.5V
„High efficiency (95%) „
No Schottky Diode Required „
1A Output Current at 5V Input 3.3V Output „
1.5MHz Switching Frequency
„Built-in ON/OFF Function
„Low Dropout Operation: 100% Duty Cycle „
Thermal Protection „
Tiny 6-Lead TDFN2X2 Package „
RoHS Compliant

Applications „
Mobile Phones „
Wireless and DSL modems   „
Power Supply for Portable Devices

Ordering Information

ORDER NUMBER	MARKING	OUTPUT VOLTAGE	TEMP.RANGE	PACKAGE (Green)
G5691RB1U	5691	Ajustable	40°C~ +85°C	TDFN2X2-6
G5691-12RB1U	5691A	1.2	40°C~ +85°C	TDFN2X2-6
G5691-33RB1U	5691E	3.3	40°C~ +85°C	TDFN2X2-6

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

Pin Configuration                                       Typical Application Circuit

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