STMPS2242 Datasheet, PDF (1/42 Pages) STMicroelectronics – Enhanced dual-channel power switches

STMPS2242, STMPS2252
STMPS2262, STMPS2272
Enhanced dual-channel power switches
Features
■ 100 mΩ high-side MOSFET switch
■ 500 mA/1000 mA continuous current per
channel
■ Thermal protection
■ Independent short-circuit protection with
overcurrent logic output
■ Operating range from 2.7 V to 5.5 V
■ CMOS and TTL compatible inputs
■ 2.5 ms typical rise time
■ Undervoltage lockout
■ 13 µA maximum standby supply current
■ Ambient temperature range: -40 °C to 85 °C
■ 8 kV ESD protection
■ Reverse current protection
■ Fault blanking
Description
The STMPS2242/2252/2262/2272 power
distribution switches are intended for applications
where heavy capacitive loads and short-circuits
are likely to be encountered. These devices
incorporate 100 mΩ MOSFET high-side power
switches for power distribution systems that
require multiple power switches in a single
package.
SO-8
MSOP8
Each switch is controlled by an independent logic
enable input. When the output load exceeds the
current limit threshold or a short is present, these
devices limit the output current to a safe level by
switching into a constant current mode, pulling the
overcurrent (OCx) logic output low. When
continuous heavy overloads and short-circuits
increase the power dissipation in the switch,
causing the junction temperature to rise, a
thermal protection circuit shuts off the switch to
prevent damage. Recovery from a thermal
shutdown is automatic once the device has
cooled sufficiently. Internal circuitry ensures the
switch remains off until valid input voltage is
present.
Table 1. Device summary
Order code
SO-8
MSOP8⁽¹⁾
STMPS2242MTR STMPS2242TTR
STMPS2252MTR
STMPS2262MTR
STMPS2272MTR
STMPS2252TTR
STMPS2262TTR
STMPS2272TTR
1. MSOP8 is also known as TSSOP8.
Current limit
(mA)
500
500
1000
1000
Enable
Active low
Active high
Active low
Active high
Packing
Tape and reel
Tape and reel
Tape and reel
Tape and reel
January 2011
Doc ID 15050 Rev 3
1/42
www.st.com
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