1

2

3

5

4

IN

EN

OC

GND

GND

OUT

DBV PACKAGE

(TOP VIEW)

TPS2041B-EP

www.ti.com

SLVSAX8

– SEPTEMBER 2011

CURRENT-LIMITED POWER-DISTRIBUTION SWITCH

Check for Samples: TPS2041B-EP

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FEATURES

APPLICATIONS

•

70-m

Ω High-Side MOSFET

•

Heavy Capacitive Loads

•

500-mA Continuous Current

•

Short-Circuit Protection

•

Thermal and Short-Circuit Protection

SUPPORTS DEFENSE, AEROSPACE,

•

Current Limit:

AND MEDICAL APPLICATIONS

0.45 A (Min), 1.55 A (Max)

•

Controlled Baseline

•

Operating Range: 2.7 V to 5.5 V

•

One Assembly/Test Site

•

0.6-ms Typical Rise Time

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One Fabrication Site

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Undervoltage Lockout

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Available in Military (

–55°C/125°C)

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Deglitched Fault Report (OC)

Temperature Range

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No OC Glitch During Power Up

•

Extended Product Life Cycle

•

Maximum Standby Supply Current: 1

μA

•

Extended Product-Change Notification

•

Bidirectional Switch

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Product Traceability

•

ESD Protection Level Per AEC-Q100

Classification

•

UL Recognized, File Number E169910

DESCRIPTION

The TPS2041B power-distribution switch is intended for applications where heavy capacitive loads and short

circuits are likely to be encountered. This device incorporates 70-m

Ω N-channel MOSFET power switches for

power-distribution systems that require multiple power switches in a single package. Each switch is controlled by

a 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, the device limits the output current

to a safe level by switching into a constant-current mode, pulling the overcurrent (OC) 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 that the switch remains

off until valid input voltage is present. This power-distribution switch is designed to set current limit at 1 A (typ).

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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.

Copyright

© 2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.