AIC1525 Datasheet, PDF (1/10 Pages) Analog Intergrations Corporation – USB High-Side Power Switch

AIC1525
USB High-Side Power Switch
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 R_DS(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.
VCC
5.0V
4.50 V to 5.25V
Upstream VBUS
100mA max
VBUS
D+
D-
GND
AIC1722
IN OUT
+ _1µF
CIN
GND
33µF
10K
+_{10 µF}
COUT
USB Controller
VIN
ON/OFF
OVERCURRENT
GND
CTL OUT
FLG
IN
GND OUT
NC
IN
AIC1525
DATA
* 33^µF, 16V Tantalum, or
100µF, 10V Electrolytic
Bold line indicate high- current traces
+
33µF
*
0.1 µF
One-Port Self-Powered Hub
Ferrite
Bead
0.01µF
VBUS
D+
D-
GND
DATA
Analog Integrations Corporation
www.analog.com.tw
DS-1525-00 May 16, 00
TEL: [phone]
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
FAX: [phone]
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