G5318 [GMT]
High-Speed Step-Down Controller;
| 型号： | G5318 |
| 厂家： | 
GLOBAL MIXED-MODE TECHNOLOGY INC |
| 描述： | High-Speed Step-Down Controller |
| 文件： | 总1页 (文件大小：65K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
G5318
Global Mixed-mode Technology
High-Speed Step-Down Controller
Features
General Description
Ultra-High Efficiency
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.
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
G5318RE1U
G5318RE1D
TEMP.
RANGE
PACKAGE
(Green)
MARKING
5318
5318
-40°C to +85°C
-40°C to +85°C
TDFN3X3-10
TDFN3X3-10
Note: RE: TDFN3X3-10
1: Bonding Code
U & D : Tape & Reel
Pin Configuration
G5318
PGOOD
1
10 BST
11 GND
2
3
9
8
DH
LX
TRIP
EN
Thermal
Pad
4
5
FB
7
6
VCC
DL
RF
TDFN3X3-10
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.8
Apr 15, 2013
1
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