AIC1525
USB High-Side Power Switch
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
www.analog.com.tw
DS-1525-00 May 16, 00 TEL: 886-3-5772500 FAX: 886-3-5772510 1
n FEATURES
l 70mΩ (5V Input) High-Side MOSFET Switch.
l 500mA Continuous Load Current per Channel.
l 75µA Typical On-State Supply Current.
l 1µA Typical Off-State Supply Current.
l Current-Limit / Short Circuit Protection.
l Thermal Shutdown Protection under Overcurrent
Condition.
l Undervoltage Lockout Ensures that Switch is off at
Start Up.
l Output can be Forced Higher than Input (Off-State).
l Open-Drain Fault Flag.
l Slow Turn ON and Fast Turn OFF.
l Enable Active-High or Active-Low.

n APPLICATIONS
• USB Power Management.
l Hot Plug-In Power Supplies.
l Battery-Charger Circuit.
n TYPICAL APPLICATION
CIRCUIT
n DESCRIPTION
The AIC1525 is an integrated high-side power
switch for self-powered and bus-powered Universal
Serial Bus (USB) applications. The high-side
switch is a MOSFET with 70mΩ RDS(ON), which
meets USB voltage drop requirements for
maximum transmission wire length.

Multi-purpose open-drain fault flag output
indicates over-current limiting, thermal shutdown,
or undervoltage lockout. Output current is typically
limited to 0.85A below the 5A safety requirement,
and thermal shutdown function shuts the switch
off to prevent damage under overcurrent condition.

Guaranteed minimum output rise time limits
inrush current during hot plug-in, minimizing EMI
and preventing the voltage at upstream port from
dropping excessively.
Ferrite
Bead
0.01µF33µF*
0.1µF
33µF
5.0V
VCC
+
DATA
D+
D-
GND
VBUS
OVERCURRENT
10K
USB Controlllerr
GND
VIN ON/OFF
4.50V to 5.25V
Upstream VBUS
100mA max
DATA
AIIC1722
OUTIN
GND
+1µF
CIN 10µFCOUT
+
* 33µF, 16V Tantalum, or
100µF, 10V Electrolytic
Bold line indicate high- current traces
IN
OUT
OUT
CTL
FLG
GND
NC IN
AIC1525
D+
D-
GND
VBUS
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