SP2525A Datasheet, PDF (1/9 Pages) Sipex Corporation – USB High-Side Power Switch

SP2525A
USB High-Side Power Switch
FEATURES
■ +3.0V to +5.5V Input Voltage Range
■ 500mA Continuous Load Current per
Channel
■ 2.6V Undervoltage Lockout
■ 1.25A Short Circuit Current Limit
■ 100mΩ Maximum On-Resistance
■ 75µA On-State Supply Current
■ 1µA Shutdown Current
■ Output can be Forced Higher than Input
(Off-State)
■ Thermal Shutdown
■ Slow Turn On and Fast Turn Off
EN 1
FLG 2
GND 3
NC 4
SP2525A
8 Pin NSOIC
8 OUT
7 IN
6 OUT
5 IN
Now Available in Lead Free Packaging
■ Active-High Version: SP2525A-1
■ Active-Low Version: SP2525A-2
APPLICATIONS
■ USB Power Management
■ Hot Plug-In Power Supplies
■ Battery Charger Circuit
DESCRIPTION
The SP2525A device is an integrated high-side power switch ideal for self-powered and bus-
powered Universal Serial Bus (USB) applications. The high-side switches are MOSFETs 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 the thermal shutdown function shuts the switch off to prevent damage
under overcurrent conditions. Guaranteed minimum output rise time limits inrush current
during hot plug-in, minimizing EMI and preventing the voltage at the upstream port from
dropping excessively.
TYPICAL APPLICATION CIRCUIT
4.50V TO 5.25V
UPSTREAM VBUS
100mA MAX
VBUS
D+
D-
GND
DATA
VCC
5.0V
33µF
SPX1521
IN
OUT
+ 1µF
Cin
GND
10K
USB CONTROLLER
VIN
+
ON/OFF
OVERCURRENT
10µF
Cout
GND
®
EN
OUT
SP2525A
FLG
IN
GND
NC
OUT
IN
33µF, 16V Tantalum, or
100µF, 10V Electrolytic
Bold line indicate high-current traces
Ferrite Bead
+
33µF
0.01 µF
VBUS
D+
D-
Ferrite Bead
GND
0.01 µF
DATA
One Port Self Powered Hub
Date: 5/3/06 Rev I
SP2525A USB High-Side Power Switch
1
© Copyright 2006 Sipex Corporation