G525A Datasheet, PDF (1/8 Pages) Global Mixed-mode Technology Inc – USB High-Side Power Switch Advance Information

Global Mixed-mode Technology Inc.
G525A
USB High-Side Power Switch Advance Information
Features
„Typical 110mΩ, Low MOSFET on resistance, at
5.0V
„1A minimum continuous load current
„3.0V to 5.5V operating range
„100 µA typical on-state supply current
„1 µA 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-
high or active-low version
„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 G525A is an integrated high-side power switch
optimized for self-powered and bus-powered Universal
Serial Bus (USB) applications.
The G525A satisfies the USB standards. The switch's
low on-resistance meets USB voltage drop require-
ments. When the output load exceeds current-limit
threshold, G525A switches into constant mode and
limit the output current to a safe level, which is typically
1.4A, well below the UL 25VA safety requirements. 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 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.
The G525A is a UL recognized component and is
available in active-high and active-low versions in 8-pin
SOP packages.
Ordering Information
PART
G525A1
G525A2
ENABLE
Active High
Active Low
TEMP. RANGE
-40°C to ＋85°C
-40°C to ＋85°C
PACKAGE
8-Pin SOP
8-Pin SOP
Pin Configuration
EN ¹
FLG 2
G525A
8 _OUT
7 IN
GND 3
6 OUT
NC 4
5 NC
8 Pin SOP
(EN)1
(FLG)2
G525A
Gate
Control
6,8 (OUT)
7 (IN)
3 (GND)
8 Pin Function Block
R
UL Recognized Component
Ver: 1.2
Nov 11, 2002
TEL: [phone]
http://www.gmt.com.tw
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