GENERAL DESCRIPTION

HT3629 is a fully protected H-bridge driver designed especially for automotive headlight beam control and industrial servo control applications. The device built using the high voltage BCDMOS process. HT3629 is a light position controller intended to use in passenger cars. This circuit adapts the elevation of the light beam of the head light of the car to a state defined by the car driver using a potentiometer on the dashboard. An internal window- comparator controls the input line. In the case of a fault condition, like short circuit to ground, short circuit to supply-voltage, and broken wire, the IK8508 stops the motor immediately. In addition, the device protected against temperatures above 160oC and electrical transients. Furthermore, the built in features like under and over voltage protections, short circuit and broken wire detection, and over temperature protection will open a wide range of automotive and industrial applications.

FEATURES

Low positional error

Low noise sensitivity due to hysteresis

Low supply current

Wide input voltage range (0.05Vp - 0.95Vp)

Over temperature protection

Over- and under voltage lockout

Broken wire and short-circuit indication on SET input

Stall function via temperature
Stall function with external stall current control Full output protection
No crossover current
Hysteresis level set externally
Internal clamp diodes
Enhanced power packages