1 Features
• Quad-channel 65-mΩ RON SPI-controlled smart
high-side switch
– Low RON ensures low power dissipation for
500-mA to 2-A DC loads
– SPI control allows for simple isolation of control
from output
• Adjustable current limiting enables improved
system level reliability
– Current limit set-point from 300 mA to 2.6 A
• 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 6 mm x 6 mm 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 65-mΩ 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 300 mA
to 2.6 A 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 6 mm ×
6 mm QFN package with 0.5-mm pin pitch which
minimizes solution PCB footprint.