The 50XS4200 device is part of a 24 V dual high-side switch product family with

integrated control, and a high number of protective and diagnostic functions. It

is designed for truck and bus applications. The low RDS(on) channels (<50 mΩ)

can control different load types; bulbs, solenoids, or DC motors. Control, device

configuration, and diagnostics are performed through a 16-bit serial peripheral

interface (SPI), allowing easy integration into existing applications. This device

is powered by SMARTMOS technology.

Both channels can be controlled individually by external/internal clock signals,

or by direct inputs. Using the internal clock allows fully autonomous device

operation. Programmable output voltage slew rates (individually programmable)

helps improve electromagnetic compatibility (EMC) performance. To avoid

shutting off the device upon inrush current, while still being able to closely track

the load current, a dynamic overcurrent threshold profile is featured. Switching

current of each channel can be sensed with a programmable sensing ratio.

Whenever communication with the external microcontroller is lost, the device

enters a Fail-safe operation mode, but remains operational, controllable, and

protected.

Features

• Two fully-protected 50 mΩ (at 25 °C) high-side switches

• Up to 1.65 A steady state current per channel

• Separate bulb and DC motor latched overcurrent handling

• Individually programmable internal/external PWM clock signals

• Overcurrent, short-circuit, and overtemperature protection with

programmable autoretry functions

• Accurate temperature and current sensing

• Open load detection (channel in OFF and ON state), also for LED

applications (7.0 mA typ.)

• Normal operating range: 8.0 to 36 V, extended range: 6.0 to 58 V

• 3.3 V and 5.0 V compatible 16-bit SPI port for device control, configuration

and diagnostics at rates up to 8.0 MHz