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
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