NCL30105 Datasheet - ON Semiconductor

NCL30105 Constant Off Time PWM Current-Mode Controller

Pin Number Pin Name Function 1 toff Adjusts the Off Time Duration 2 DIM Dimming Input 3 VCC Supplies the Controller 4 CS Current Sense Input 5 DRV Driver Output 6 GND * 7 SSTART Soft *start / Peak Current Adjustment 8 NC Non *connected Pin Pin Desc.

NCL30105 Constant Off Time PWM Current-Mode Controller for LED Applications The NCL30105 is a peak current controlled fixed off time controller designed for LED driver applications in which the LEDs are operated in deep Continuous Conduction Mode (CCM) without requiring slope compensation. Featuring an adjustable off time generator, the controller can drive a MOSFET up to a 500 kHz switching frequency. A dedicated dimming pin enables the use of a pulse width modulated logic signal to di.

NCL30105 Features

* robust protection features to detect switch overcurrent faults and to detect maximum on time events. Features

* Constant Off Time Current

* Mode Control Operation

* Adjustable Off Time (0.5 ms to 10 ms)

* Internal Leading Edge Blanking

* Source 250 mA / Sink 500

NCL30105-ONSemiconductor.pdf