TPS2045A, TPS2046A, TPS2047A, TPS2048A
TPS2055A, TPS2056A, TPS2057A, TPS2058A
CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
SLVS251A – SEPTEMBER 2000 – REVISED FEBRUARY 2001
TPS2046A, TPS2056A
TPS2045A, TPS2055A
80-mΩ High-Side MOSFET Switch
D PACKAGE
(TOP VIEW)
D PACKAGE
(TOP VIEW)
250 mA Continuous Current Per Channel
Independent Thermal and Short-Circuit
Protection With Overcurrent Logic Output
GND
IN
OC1
1
2
3
4
8
7
6
5
GND
IN
OUT
OUT
OUT
OC
1
2
3
4
8
7
6
5
OUT1
OUT2
OC2
Operating Range . . . 2.7 V to 5.5 V
CMOS- and TTL-Compatible Enable Inputs
2.5-ms Typical Rise Time
†
EN1
IN
†
†
EN2
EN
Undervoltage Lockout
TPS2047A, TPS2057A
D PACKAGE
TPS2048A, TPS2058A
D PACKAGE
10 µA Maximum Standby Supply Current
for Single and Dual (20 µA for Triple and
Quad)
(TOP VIEW)
(TOP VIEW)
GNDA
IN1
OC1
GNDA
IN1
OC1
1
2
3
4
5
6
7
8
16
15
14
13
12
1
2
3
4
5
6
7
8
16
15
14
13
12
OUT1
OUT2
OC2
OUT1
OUT2
OC2
Bidirectional Switch
†
†
EN1
EN1
Ambient Temperature Range, 0°C to 85°C
ESD Protection
†
†
EN2
EN2
GNDB
IN2
OC3
GNDB
IN2
OC3
11 OUT3
10 NC
11 OUT3
10 OUT4
†
†
EN3
EN3
†
The TPS2045A through TPS2048A and
TPS2055AthroughTPS2058Apower-distribution
switches are intended for applications where
heavy capacitive loads and short circuits are likely
NC
9
NC
EN4
9
OC4
†
All enable inputs are active high for the TPS205xA series.
NC – No connect
to be encountered. These devices incorporate 80-mΩ N-channel MOSFET high-side power switches for
power-distribution systems that require multiple power switches in a single package. Each switch is controlled
by an independent logic enable input. Gate drive is provided by an internal charge pump designed to control
the power-switch rise times and fall times to minimize current surges during switching. The charge pump
requires no external components and allows operation from supplies as low as 2.7 V.
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. These power-distribution switches are designed to current limit
at 0.5 A.
GENERAL SWITCH CATALOG
80 mΩ, dual
80 mΩ, quad
33 mΩ, single
80 mΩ, single
80 mΩ, dual
260 mΩ
TPS201xA 0.2 A – 2 A
TPS2042
TPS2052
TPS2046
TPS2056
500 mA
500 mA
250 mA
250 mA
80 mΩ, triple
80 mΩ, quad
TPS202x
0.2 A – 2 A
TPS203x
0.2 A – 2 A
TPS2080
500 mA
500 mA
500 mA
250 mA
250 mA
250 mA
TPS2014
TPS2015
TPS2041
TPS2051
TPS2045
TPS2055
600 mA
1 A
500 mA
500 mA
250 mA
250 mA
TPS2100/1
TPS2081
TPS2082
TPS2090
TPS2091
TPS2092
IN1 500 mA
IN2 10 mA
TPS2043 500 mA
TPS2053 500 mA
TPS2047 250 mA
TPS2057 250 mA
IN1
IN2
TPS2085
500 mA
500 mA
500 mA
250 mA
TPS2044 500 mA
TPS2054 500 mA
TPS2048 250 mA
TPS2058 250 mA
OUT
TPS2086
TPS2087
TPS2095
TPS2102/3/4/5
IN1 500 mA
IN2 100 mA
1.3 Ω
TPS2096 250 mA
TPS2097 250 mA
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2001, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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