TPS2043_14 Datasheet, PDF (1/28 Pages) Texas Instruments – TRIPLE POWER-DISTRIBUTION SWITCHES

TPS2043, TPS2053
TRIPLE POWER-DISTRIBUTION SWITCHES
SLVS191 – JANUARY 1999
D 135-mΩ -Maximum (5-V Input) High-Side
MOSFET Switch
D 500 mA Continuous Current per Channel
D Short-Circuit and Thermal Protection With
Overcurrent Logic Output
D Operating Range . . . 2.7 V to 5.5 V
D Logic-Level Enable Input
D 2.5-ms Typical Rise Time
TPS2043
D PACKAGE
(TOP VIEW)
GND1 1
IN1 2
EN1 3
EN2 4
GND2 5
IN2 6
16 OC1
15 OUT1
14 OUT2
13 OC2
12 OC3
11 OUT3
D Undervoltage Lockout
D 20 µA Maximum Standby Supply Current
D Bidirectional Switch
D Available in 16-pin SOIC Package
D Ambient Temperature Range, –40°C to 85°C
D 2-kV Human-Body-Model, 200-V
Machine-Model ESD Protection
D UL Listed – File No. E169910
EN3 7
NC 8
10 NC
9 NC
TPS2053
D PACKAGE
(TOP VIEW)
GND1 1
IN1 2
EN1 3
EN2 4
16 OC1
15 OUT1
14 OUT2
13 OC2
description
GND2 5
IN2 6
12 OC3
11 OUT3
The TPS2043 and TPS2053 triple power
EN3 7 10 NC
distribution switches are intended for applications
NC 8
9 NC
where heavy capacitive loads and short circuits
are likely to be encountered. The TPS2043 and
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
RECOMMENDED MAXIMUM
TYPICAL SHORT-CIRCUIT
TA
ENABLE CONTINUOUS LOAD CURRENT
CURRENT LIMIT AT 25°C
(A)
(A)
–40°C to 85°C Active low
0.5
0.9
–40°C to 85°C Active high
0.5
0.9
† _{The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2043DR)}
PACKAGED DEVICES
SOIC
(D)†
TPS2043D
TPS2053D
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.
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.
Copyright © 1999, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1