G5318 致新代理商 GMT DC-DC系列 同步（准PWM）降压控制器 High-Speed Step-Down Controller

Part Number	VCC (V)min.	VCC (V)max.	PG	FSW (k Hz)	FB (V)	VO_MAX (A)	VOVP (%, us)	Note	Package
G5318	4.5	28	YES	ADJ	0.7	2.6	120, 20	EN, UVP, OCP, VOUT Adjustable, 1.5ms VOUT Servo Soft Start	TDFN3X3-10

 

General Description
G5318 is a small-sized step-down controller uses con-stant   on-time   control   scheme   to   handle   wide   in-put/output voltage ratios with ease and provides 100ns “instant-on”  response  to  load  transients  while  main-taining  a  relatively  constant  switching  frequency.  

The  G5318  achieves  high  efficiency  at  a  reduced  cost  by  eliminating  the  current-sense  resistor  found  in  tradi-tional  current-mode  PWMs.  Efficiency  is  further  en-hanced  by  an  ability  to  drive  very  large  synchronous  rectifier  MOSFETs.  The  G5318  is  intended  for  CPU  core, chipset, DRAM, or other low-voltage supplies as low  as  0.7V.  The  G5318  is  available  in  TDFN3X3-10  package.

Features

• „Ultra-High Efficiency „
• 4700ppm/°C RDS(ON) Current Sensing ( without Current-Sense Resistor ) „
• Quasi-PWM with 100ns Load-Step Response
• „Built-in 0.5% 0.7V Reference „
• 0.7V to 2.6V Adjustable Output Range
• „4.5V to 28V Battery Input Range
• „4 Selectable Frequency Setting
• „Integrated Boost Switch „
• OVP & UVP „
• 1.5ms Voltage Servo Soft-Start „
• Drives Large Synchronous-Rectifier FETs
• „Power-Good Indicator „
• Thermal Shutdown (Non-latch)

Applications „

• Notebook Computers „
• CPU Core Supply
• „I/O Supply „
• Chipset/RAM Supply as Low as 0.7V

Ordering Information

ORDER NUMBER	MARKING	TEMP. RANGE	PACKAGE (Green)
G5318RE1U	5318	_40°C~ +85°C	TDFN3X3-10
G5318RE1D	5318	_40°C~ +85°C	TDFN3X3-10

 

Pin Configuration

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》。