AIC1527
Quad USB High-Side Power Switch
FEATURES
DESCRIPTION
n
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· 110mW (5V Input) High-Side MOSFET Switch.
l 500mA Continuous Load Current per Channel.
l 220mA Typical On-State Supply Current.
l 1mA Typical Off-State Supply Current.
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 110mW RDS(ON), which meets USB
voltage drop requirements for maximum
l Current-Limit / Short Circuit Protection.
l Thermal Shutdown Protection under Overcurrent
Condition.
transmission wire length.
l Undervoltage Lockout Ensures that Switch is off at
Start Up.
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.
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.
APPLICATIONS
· USB Power Management.
l Hot Plug-In Power Supplies.
l Battery-Charger Circuit.
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Guaranteed minimum output rise time limits
inrush current during hot plug-in, minimizing EMI
and preventing the voltage at upstream port from
dropping excessively.
TYPICAL APPLICATION CIRCUIT
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Ferrite
Bead
VCC
5.0V
+
VBUS
m
33
F
10K
10K
+
D+
m
33 F
*
m
0.01 F
D-
GND
10K
10K
4.50V to 5.25V
Upstream VBUS
100mA max
DATA
AIC11722
VBUS
D+
USB Controller
AIC1527
VBUS
D+
+
IN OUT
VIN ON/OFF
OVERCURRENT
OVERCURRENT
ON/OFF
ON/OFF
OVERCURRENT
OVERCURRENT
ON/OFF
OUTA
IN(A/B)
m
33 F
*
CTLA
FLGA
FLGB
CTLB
CTLA
FLGA
FLGB
m
0.01
F
D-
+
+
m
m
0.1 F
1 F
m
D-
10 F
COUT
GND
C
IN
GND
GND1
OUTB
GND
DATA
OUTA
IN(A/B)
VBUS
D+
DATA
CTLB
m
0.1 F
+
+
GND
m
33 F
*
GND1
OUTB
0.01mF
D-
GND
DATA
DATA
VBUS
D+
m
33 F, 16V Tantalum, or
100 F, 10V Electrolytic
Bold line indicate high- current traces
*
m
33 F
*
m
m
0. 01 F
D-
GND
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: 886-3-5772500 FAX: 886-3-5772510
www.analog.com.tw
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AIC [ ANALOG INTERGRATIONS CORPORATION ]
