General Description

The Supertex HV9901 is a BiCMOS/DMOS universal relay driver that employs PWM switching techniques. It is designed for efficient and energysaving operation of a low voltage relay with supply voltages ranging from 10 to 450V DC through utilization of the relay coils’ inductance.

Features

► 10 to 450V input voltage range

► Energy saving hold current mode

► Adjustable microcontroller supply

► Low supply current <1.0mA

► Constant current coil

► Programmable pull-in current, pull-in time, and hold current

► Efficient PWM operation using the relay coils’ inductance

Applications

► Industrial controls

► Relay timers

► Solenoid drivers

► Home automation