The 20XS4200 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

has been designed for truck, bus, and industrial applications. The low RDS(on)

channels (<20 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 20 mΩ (@ 25 °C) high-side switches

• Up to 4.4 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

• Openload 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