G528 Datasheet, PDF (1/8 Pages) Global Mixed-mode Technology Inc – USB High-Side Power Switch Advance Information

Global Mixed-mode Technology Inc.
G528/G528A
USB High-Side Power Switch Advance Information
Features
„ 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.
„ 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
Applications
„ 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
General Description
The G528/G528A is an integrated high-side power
switch optimized for self-powered and bus-powered
Universal Serial Bus (USB) applications.
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.
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.
Ordering Information
ORDER
NUMBER
G528P1U
G528AP1U
Note: P1: SOP-8L
U: Tape & Reel
ORDER NUMBER
(Pb free)
G528P1Uf
G528AP1Uf
Pin Configuration
ENABLE
Active Low
Active High
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
PACKAGE
SOP-8
SOP-8
Ver: 1.2
May 17, 2005
G528/G528A
GND 1
8 OUT
IN 2
7 OUT
IN 3
6 OUT
EN 4
(EN)
SOP-8
5 FLG
1
TEL: [phone]
http://www.gmt.com.tw