G525_15 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – USB High-Side Power Switch Advance Information

Global Mixed-mode Technology Inc.
G525
USB High-Side Power Switch Advance Information
Features
„ Compliant to USB standard
„ Typical 130mΩ, Low MOSFET on resistance, at
5.0V
„ 500mA minimum continuous load current
„ 3.0V to 5.5V operating range
„ 100µA typical on-state supply current
„ 25µA typical standby supply current
„ Output can be forced higher than input when
operating in off state.
„ 1.2A maximum current limit
„ Thermal shutdown protection
„ 2.4V typical undervoltage lockout (UVLO)
„ Open-drain fault flag pin
„ Slow turn-on (soft-start) and fast turnoff
„ Logic level enable pin, available with active-
high or active-low version
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 G525 is an integrated high-side power switch op-
timized for self-powered and bus-powered Universal
Serial Bus (USB) applications.
The G525 satisfies the USB standards. The switch's
low on-resistance meets USB voltage drop require-
ments. When the output load exceeds current-limit
threshold, G525 switches into constant mode and limit
the output current to a safe level, which is typically
900mA, well below the UL 25VA safety requirement. An
open-drain flag output is also available to indicate fault
conditions to the local USB controller. Soft start elimi-
nates the momentary 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 pre-
vent catastrophic switch failure caused by increasing
power dissipation when continuous heavy loads or
short circuit occurs. A undervoltage 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
MARKING
G525-1
G525-1
G525-2
G525-2
G525-1P81U
G525-1
G525-2P81U
G525-2
Note: P1: SOP-8
P8: MSOP-8
1: Bonding Code
U: Tape & Reel
Pin Configuration
ENABLE
Active High
Active Low
Active High
Active Low
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PACKAGE
(Pb free)
SOP-8
SOP-8
MSOP-8
MSOP-8
Function Block
EN 1
G525
8 OUT
FLG 2
7 IN
GND 3
6 OUT
NC 4
5 NC
SOP-8/MSOP-8
G525
(EN) 1
(FLG) 2
Gate
Control
3 (GND)
6,8 (OUT)
7 (IN)
Ver 2.2
Mar 19, 2008
TEL: [phone]
http://www.gmt.com.tw
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