Microchip HV9912NG-G Constant Current LED Driver, 90 V dc 18μA 16-Pin SOIC, Драйвер

The HV9912 is a current mode control LED driver IC designed to control single switch PWM converters (buck, boost, buck-boost or SEPIC) in a constant frequency mode. The controller uses a peak current-mode control scheme with programmable slope compensation and includes an internal transconductance amplifier to control the output current in closed loop enabling high output current accuracy (in the case of buck and buck-boost converters, the output current can be sensed using a high side current sensor like the HV7800).

Switch mode controller for single switch driversBuckBoostBuck-boost and SEPIC Works with high side current sensorsClosed loop control of output currentHigh PWM dimming ratioInternal 90V linear regulator (can be extended using external Zener diodes)Internal 2% voltage reference (0°C < TA < 85°C)Constant frequency operationProgrammable slope compensationLinear & PWM dimming+0.2A/-0.4A gate drive

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