135-mW -Maximum (5-V Input) High-Side

MOSFET Switch

500 mA Continuous Current per Channel

Short-Circuit and Thermal Protection With

Overcurrent Logic Output

Operating Range . . . 2.7 V to 5.5 V

Logic-Level Enable Input

2.5-ms Typical Rise Time

Undervoltage Lockout

20 mA Maximum Standby Supply Current

Bidirectional Switch

Available in 16-pin SOIC Package

Ambient Temperature Range, –40°C to 85°C

2-kV Human-Body-Model, 200-V

Machine-Model ESD Protection

UL Listed – File No. E169910

description

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

the TPS2053 incorporate in single packages three 135-mW 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.