G553 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Power Distribution Switch

Global Mixed-mode Technology Inc.
Power Distribution Switch
G553
Features
„ 125mΩ High-Side MOSFET
„ 450mA Typical Current Limit with Foldback
„ Operating Range:2.7V to 5.5V
„ Under voltage Lockout
„ 65µA Quiescent Supply Current
„ 1µA Maximum Shutdown Supply Current
„ Logic Level Enable Pin, Available with
Active-High or Active-Low Version
„ No Reverse Current when Power Off
„ Deglitched Open-Drain Over-Current Flag
Output ( OC )
„ Output Shutdown Pull-low Resister
„ Turn-on Soft Start 1.5ms Typical Rise Time
„ SOP-8 Packages
Applications
„ High-Side Power Protection Switch
„ USB Power Management
„ USB Host and Self-Powered Bubs
„ USB Bus-Powered Hubs
„ Hot Plug-In Power Supplies
„ Battery-Charger Circuits
General Description
The G553 is an integrated 125mΩ power switch for
self-powered and bus-powered Universal Serial Bus
(USB) applications.
Several Protection features include current limiting
with foldback, and thermal shutdown to prevent catas-
trophic switch failure caused by increasing power dis-
sipation when continuous heavy loads or short circuit
occurs. And a built-in charge pump is used to drive the
N-channel MOSFET that is free of parasitic body diode
to eliminate any reversed current flow across the
switch when it is powered off.
OC is open-drain output report over-current or
over-temperature event and has typical 9ms deglitch
timeout period.
Ordering Information
ORDER
NUMBER
G553D1P11U
G553D2P11U
Note: P1: SOP-8
1: Bonding Code
U: Tape & Reel
MARKING
G553D1
G553D2
ENABLE
Active High
Active Low
Current Limit
0.45A
0.45A
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
PACKAGE
(Green)
SOP-8
SOP-8
Pin Configuration
Typical Application Circuit
GND 1
IN 2
IN 3
EN (EN) 4
G553
SOP-8
8 OUT
7 OUT
6 OUT
5 OC
Power Supply
2.7V to 5.5V
G553
IN
OUT
1µF*
OC
0.1µF
Load
22µF
EN(EN)
ON
OFF
*: 1µF of input capacitor is enough in most application cases.
If the PCB trace of power rail to IN is long, larger input capacitor is necessary.
Ver: 1.5
Nov 12, 2009
TEL: [phone]
http://www.gmt.com.tw
1