STMPS2141_09 Datasheet, PDF (1/34 Pages) STMicroelectronics – Enhanced single channel power switches

STMPS2141, STMPS2151
STMPS2161, STMPS2171
Enhanced single channel power switches
Features
■ 90 mΩ high-side MOSFET switch
■ 500/1000 mA continuous current
■ Thermal and short-circuit protection with
overcurrent logic output
■ Operating range from 2.7 V to 5.5 V
■ CMOS- and TTL-compatible enable inputs
■ Undervoltage lockout (UVLO)
■ 12 µA maximum standby supply current
■ Ambient temperature range, -40°C to 85°C
■ 8 kV ESD protection
■ Reverse current protection
■ Fault-blanking
SOT23-5L
SO-8
MSOP8
Description
The STMPS2141, STMPS2151, STMPS2161,
STMPS2171 power distribution switches are
intended for applications where heavy capacitive
loads and short circuits are likely to be
encountered. These devices incorporate 90 mΩ
N-channel MOSFET high-side power switches for
power-distribution. These switches are controlled
by a logic enable input.
Table 1. Device summary
When the output load exceeds the current-limit
threshold or a short is present, the device limits
the output current to a safe level by switching into
a constant-current mode. 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 the switch off to prevent damage. Recovery
from a thermal shutdown is automatic once the
device has cooled sufficiently. Internal circuitry
ensures the switch remains off until a valid input
voltage is present.
Order codes
SO-8
SOT23-5L
MSOP8⁽¹⁾
STMPS2141MTR
STMPS2151MTR
STMPS2161MTR
STMPS2171MTR
STMPS2141STR
STMPS2151STR
STMPS2161STR
STMPS2171STR
STMPS2141TTR
STMPS2151TTR
STMPS2161TTR
STMPS2171TTR
1. MSOP8 package is also known as “TSSOP8”
Current limit
(mA)
500
500
1000
1000
Enable
Active low
Active high
Active low
Active high
July 2009
Doc ID 13793 Rev 4
1/34
www.st.com
34