TPS2043, TPS2053
TRIPLE POWER-DISTRIBUTION SWITCHES
SLVS191 – JANUARY 1999
TPS2043
D PACKAGE
(TOP VIEW)
135-mΩ -Maximum (5-V Input) High-Side
MOSFET Switch
500 mA Continuous Current per Channel
GND1
IN1
OC1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
Short-Circuit and Thermal Protection With
Overcurrent Logic Output
OUT1
OUT2
OC2
EN1
EN2
GND2
IN2
Operating Range . . . 2.7 V to 5.5 V
Logic-Level Enable Input
OC3
OUT3
2.5-ms Typical Rise Time
EN3
NC
10 NC
Undervoltage Lockout
9
NC
20 µA Maximum Standby Supply Current
Bidirectional Switch
TPS2053
D PACKAGE
(TOP VIEW)
Available in 16-pin SOIC Package
Ambient Temperature Range, –40°C to 85°C
GND1
IN1
OC1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
2-kV Human-Body-Model, 200-V
Machine-Model ESD Protection
OUT1
OUT2
OC2
EN1
EN2
GND2
IN2
UL Listed – File No. E169910
OC3
description
OUT3
EN3
NC
10 NC
NC
The TPS2043 and TPS2053 triple power
distribution switches are intended for applications
where heavy capacitive loads and short circuits
are likely to be encountered. The TPS2043 and
9
NC – No internal connection
the TPS2053 incorporate in single packages three 135-mΩ N-channel MOSFET high-side power switches for
power-distribution systems that require multiple power switches. Each switch is controlled by a logic enable that
is compatible with 5-V logic and 3-V logic. Gate drive is provided by an internal charge pump that controls the
power-switch rise times and fall times to minimize current surges during switching. The charge pump, requiring
no external components, allows operation from supplies as low as 2.7 V.
When the output load exceeds the current-limit threshold or a short is present, the TPS2043 and TPS2053 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.
The TPS2043 and TPS2053 are designed to limit at 0.9-A load. These power distribution switches are available
in a 16-pin small-outline integrated circuit (SOIC) package and operate over an ambient temperature range of
–40°C to 85°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
SOIC
RECOMMENDED MAXIMUM
CONTINUOUS LOAD CURRENT
(A)
TYPICAL SHORT-CIRCUIT
CURRENT LIMIT AT 25°C
(A)
T
A
ENABLE
†
(D)
–40°C to 85°C
–40°C to 85°C
Active low
Active high
0.5
0.5
0.9
0.9
TPS2043D
TPS2053D
†
The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2043DR)
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 1999, 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