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G528A PDF预览

G528A

更新时间: 2024-11-04 21:55:51
品牌 Logo 应用领域
致新 - GMT 开关电源开关
页数 文件大小 规格书
8页 195K
描述
USB High-Side Power Switch Advance Information

G528A 数据手册

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Global Mixed-mode Technology Inc.  
G528/G528A  
USB High-Side Power Switch Advance Information  
Features  
General Description  
The G528/G528A is an integrated high-side power  
switch optimized for self-powered and bus-powered  
Universal Serial Bus (USB) applications.  
„
Typical 110mΩ, Low MOSFET on resistance, at  
5.0V  
„
„
„
„
3.0V to 5.5V operating range  
100 µA typical on-state supply current  
1µA typical standby supply current  
Output can be forced higher than input when  
operating in off state.  
The G528/G528A satisfies the USB standards. The  
switch's low on-resistance meets USB voltage drop  
requirements. When the output load exceeds cur-  
rent-limit threshold, G528/G528A switches into con-  
stant-current mode and limit the output current to a  
safe level, which is typically 1.4A. An open-drain flag  
output is also available to indicate fault conditions to  
the local USB controller. Soft start eliminates the mo-  
mentary voltage drop on the upstream port that may  
occur when the switch is enabled in bus-powered  
applications.  
„
„
„
„
„
„
1.4A Typical current limit  
Thermal shutdown protection  
2.4V typical under-voltage lockout (UVLO)  
Open-drain fault flag pin  
Slow turn-on (soft-start) and fast turnoff  
Logic level enable pin, available with active-low  
version (G528), or available with active-high  
version (G528A)  
„
UL Approved_#E232223  
Besides, a thermal shutdown circuit is included to  
prevent catastrophic switch failure caused by increas-  
ing power dissipation when continuous heavy loads or  
short circuit occurs. A under-voltage lockout (UVLO)  
circuit ensures that the device remains off unless there  
is a valid input voltage present, and an enable input  
that is compatible with both 3.3V and 5V logic.  
Applications  
„
„
„
„
„
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High-side power protection switch  
USB power management  
USB host and self-powered hubs  
USB Bus-powered hubs  
Hot plug-in power supplies  
Battery-charger circuits  
Ordering Information  
ORDER  
NUMBER  
G528P1U  
G528AP1U  
ORDER NUMBER  
TEMP.  
RANGE  
ENABLE  
PACKAGE  
(Pb free)  
G528P1Uf  
G528AP1Uf  
Active Low  
Active High  
-40°C to +85°C  
-40°C to +85°C  
SOP-8  
SOP-8  
Note: P1: SOP-8L  
U: Tape & Reel  
Pin Configuration  
G528/G528A  
1
2
8
7
OUT  
OUT  
OUT  
FLG  
GND  
IN  
IN  
3
4
6
5
EN  
(EN)  
SOP-8  
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.2  
May 17, 2005  
1

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