1 Features

• 4.2-V to 42-V operating voltage, 45-V absolute

maximum

• Integrated reverse input polarity protection down to

–42 V

– Zero additional components required

• Integrated back to back MOSFETs with 150-mΩ

total RON

• 0.1-A to 2.23-A adjustable current limit (±5%

accuracy at 1 A)

• Load protection during surge (IEC 61000-4-5) with

suitable TVS

• IMON current indicator output (±8.5% accuracy)

• Low quiescent current, 300-μA in operating, 20-μA

in shutdown

• Adjustable UVLO, OVP cut off, output slew rate

control

• Reverse current blocking

• Available in easy-to-use 16-pin HTSSOP and 24-

pin VQFN packages

• Selectable current-limiting fault response options

(auto-retry, latch off, circuit breaker modes)

2 Applications

• HMI power protection in factory automation

• Fire safety systems

• Electronic thermostats and video doorbells

• Industrial PCs

• Elevators

3 Description

The TPS26400 devices are compact, feature rich

high voltage eFuses with a full suite of protection

features. The wide supply input range of 4.2 to 42

V allows control of many popular DC bus voltages.

The device can withstand and protect the loads from

positive and negative supply voltages up to ±42

V. Integrated back to back FETs provide reverse

current blocking feature making the device suitable

for systems with output voltage holdup requirements

during power fail and brownout conditions. Load,

source and device protection are provided with many

adjustable features including overcurrent, output slew

rate and overvoltage, undervoltage thresholds. The

internal robust protection control blocks along with the

high voltage rating of the TPS26400 helps to simplify

the system designs for Surge protection.

A shutdown pin provides external control for enabling

and disabling the internal FETs as well as placing the

device in a low current shutdown mode. For system

status monitoring and downstream load control, the

device provides fault and precise current monitor

output. The MODE pin allows flexibility to configure

the device between the three current-limiting fault

responses (circuit breaker, latch off, and Auto-retry

modes).

The device is available in a 5-mm × 4.4-mm 16-pin

HTSSOP as well as 5-mm x 4-mm 24-pin VQFN

package and are specified over a –40°C to +125°C

temperature range