1 Features

• Quad-channel 72mΩ RON SPI-controlled smart

high-side switch

– Low RON ensures low power dissipation for

500mA to 2A DC loads

– SPI control allows for simple isolation of control

from output

• Adjustable current limiting enables improved

system level reliability

– TPS274C65AS, TPS274C65BS: Current limit

set-point from 250mA to 2.2A

– TPS274C65ASH: Current limit set-point from

290mA to 2.45A

• Capable of driving inductive, capacitive, and

resistive loads

– Dual current limit threshold for inrush current

management

– Integrated output clamp to demagnetize

inductive loads

• Robust output protection

– Integrated thermal shutdown

– Protection against short to ground events

– Configurable fault handling

• Diagnostic features enable improved module

intelligence

– Output load current measurements

– Wire-break and short-to-supply detection

• Small 6mm × 6mm leadless package

2 Applications

• Industrial PLC system

– Digital output module

– IOLink master port

– Sensor supply

3 Description

The TPS274C65xS device is a quad-channel smart

high-side switch with a serial interface (SPI) control

and is designed to meet the requirements of industrial

control systems. The low 72mΩ RDSON minimizes

device power dissipation even when providing large

output load current. The device integrates protection

and diagnostic features to ensure system protection

even during harmful events like short circuits or load

failures. The device protects against faults through a

reliable current limit which is adjustable from 250mA

to 2.45A to provide protection regardless of output

load current. The TPS274C65xS has a configurable

inrush current period which sets a higher current limit

during turn-on for high inrush current loads, charging

capacitive loads faster, or driving incandescent bulbs.

The TPS274C65xS also provides accurate current

sense and an integrated analog to digital converter

(AS) that allows for improved load diagnostics. By

reporting load current digitally, the device allows

for communication over any isolation barrier while

enabling predictive maintenance and load diagnostics

to improve system lifetime. Additional diagnostic

features are integrated, such as on-state or off-state

open load detection and short-to-supply detection.

The TPS274C65xS is available in a small 6mm ×

6mm VQFN package with 0.5mm pin pitch, which

minimizes design PCB footprint.