HT8006
FEATURES
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Fully monolithic design
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Fixed frequency regulation with pulse
width modulation
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High side output stage with defined ramp
steepness and freewheeling diode
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Standby mode
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Wake up via L-terminal
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Emergency start and default mode
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Load response control (LRC) and soft start
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DF duty cycle transmitted via DFM-
terminal
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Error indication via L-terminal
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Phase voltage regulation
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Relay function
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Thermal protection
The HT8006 is a monolithic alternator voltage regulator IC intended for use in automotive application. It includes the control section, the field power stage and the protection against short circuits. IC regulates the output voltage of an automotive generator in close loop by control the field winding current with a Pulse-Width Modulation (PWM) high side driver at fixed frequency. The alternator voltage regulator IC has the standby mode with small current consumption when no activity pin Lamp and pin PH.
After the ignition is switched ON, the Lamp-terminal is connected to the battery via the lamp. This voltage at Lamp terminal is wake-up signal for regulator. In case of missing signal at Lamp terminal, the regulator will be activated after detection of a phase signal induced by remanence of the rotor.