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

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 drivers
Buck
Boost
Buck-boost and SEPIC
Works with high side current sensors
Closed loop control of output current
High PWM dimming ratio
Internal 90V linear regulator (can be extended using external Zener diodes)
Internal 2% voltage reference (0°C < TA < 85°C)
Constant frequency operation
Programmable slope compensation
Linear & PWM dimming
+0.2A/-0.4A gate drive