X RP 2 5 2 7 - X RP 2 5 2 8
Single/Dual Channel Adjustable Current Power
Distribution Switch
July 2011
Rev. 1.1.0
GENERAL DESCRIPTION
The XRP2527 and XRP2528 devices are
respectively single and dual channel integrated
high-side power distribution switches with
independent enables, fault flags and precise
programmable current limit thresholds. A wide
1.8V to 5.5V input voltage range allows for
operations from industry standard 1.8V, 3.3V
and 5V power rails.
Current limit thresholds can be programmed
accurately and independently for each channel
via an external resistor. A simple setting
optimizes the XRP2527 and XRP2528 for use
in USB 2.0 or 3.0 compliant V
BUS
power
distribution architectures. These devices can
be used in any self or bus powered USB
applications. The power-switch rise and fall
times are controlled to minimize current
surges during turn on/off.
Built-in over current, under voltage lockout
(UVLO), reverse current and over temperature
protections insure safe operations under
abnormal operating conditions.
XRP2527
and
XRP2528
are
offered
respectively
in
RoHS
compliant
“green”/halogen free 3mm x 3mm 8-pin and
10-pin TDFN packages.
APPLICATIONS
Generic Power Switching
Self Powered USB 2.0 and 3.0 Hubs
USB Compliant V
BUS
Power Distribution
Audio-Video Equipments
FEATURES
Single/Dual Channel Current Switch
1A per channel capable
1.8V to 5.5V Input Voltage Range
Programmable Over-Current Limit
300mA to 1A set via external resistor
±8% threshold accuracy at 1A
USB 2.0/3.0 Compliant
Individual Channel Enable
Individual Channel Fault Flag Indicator
Under voltage Lockout, Reverse
Current and Thermal Shutdown
Protection
RoHS Compliant, Green/Halogen Free
8-Pin and 10-Pin TDFN Package
TYPICAL APPLICATION DIAGRAM
Fig. 1: XRP2528 Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
EXAR [ EXAR CORPORATION ]
