HV9918 Datasheet (Supertex) - High Brightness LED Driver

HV9918, High Brightness LED Driver

The HV9918 is a PWM controller IC designed to drive high brightness LEDs using a buck topology.

It operates from an input voltage of 4.5 to 40VDC and employs hysteretic control with a high-side current sense resistor to set the constant output current up to 700mA.

The device is well suited for appli

HV9918 Features

* Hysteretic control with high-side current sensing Integrated 40V 1.0Ω MOSFET >90% Efﬁciency Wide input voltage range: 4.5 to 40V ±5% LED current accuracy Up to 2.0MHz switching frequency Adjustable constant LED current Analog or PWM control