HV9901 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. The circuit is capable of operating over a wide input voltage range without requiring a change of any external ponents.
HV9901 Key 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
- Efficient PWM operation using the relay