AIC1527 Datasheet, PDF (1/8 Pages) Analog Intergrations Corporation – Quad USB High-Side Power Switch

AIC1527
Quad USB High-Side Power Switch
n ^FEATURES
• 110mΩ (5V Input) High-Side MOSFET Switch.
l 500mA Continuous Load Current per Channel.
l 220µA 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 ^DESCRIPTION
The AIC1527 is a quad high-side power switch for
self-powered and bus-powered Universal Serial
Bus (USB) applications. One high-side switch is a
MOSFET with 110mΩ 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 for each channel. Output
current is typically limited to 1A, well below the 5A
safety requirement, and the thermal shutdown
function independently controls each channel
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.
n ^{TYPICAL APPLICATION CIRCUIT}
4.50V to 5.25V
Upstream VBUS
100mA max
VBUS
D+
D-
GND
DATA
VCC
5.0V
+
33µ F
10K
10K
AIC11722
IN OUT
+ _1µF
C_IN
GND
10K
10K
+_10µF
C_OUT
USB Controller
VIN ON/OFF
OVERCURRENT
OVERCURRENT
ON/OFF
ON/OFF
OVERCURRENT
OVERCURRENT
ON/OFF
GND
BFeerardite
+
33µF
*
0 .01µF
VBUS
D+
D-
GND
AAIICC155227
CTLA ^OUTA
FLGA ^IN(A/B)
FLGB
CTLB ^GND1
CTLA _OUTB
FLGA
FLGB
OUTA
IN(A/B)
CTLB
GND 1
OUTB
0.1µF
0.1µF
DATA
+
33µ F
*
0.01 µF
DATA
+ _33µF
*
0.01 µF
VBUS
D+
D-
GND
VBUS
D+
D-
GND
* 33µF, 16V Tantalum, or
100µF, 10V Electrolytic
Bold line indicate high- current traces
DATA
+
33µF
*
0. 01µF
VBUS
D+
D-
GND
DATA
4-Port Self-Powered Hub
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1527-00 May 31, 00
TEL: [phone] FAX: [phone]
www.analog.com.tw
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