General Description

The Supertex HV9901 is a BiCMOS/DMOS universal relay driver that employs PWM switching techniques. It is designed for efficient and energy-saving operation of a low voltage relay with supply voltages ranging from 8 to 450V DC through utilization of the relay coils’ inductance.

Features

❐ 8V to 450V Input Voltage Range

❐ Energy Saving Hold Current Mode

❐ Adjustable Microcontroller Supply

❐ Low Supply Current <1mA

❐ Constant Current Coil Drive

❐ Programmable Pull-in Current, Pull-in Time, and Hold Current

❐ Efficient PWM Operation Using the Relay Coils’ Inductance

Applications

❏ Industrial Controls

❏ Relay Timers

❏ White Goods

❏ Solenoid Drivers

❐ Home Automation