Microchip Technology HV9961
The HV9961 is an Average-Current mode constant-current control LED driver IC operating in a constant Off-time mode. This greatly improves accuracy as well as the line and load regulations of the LED current without any need for loop compensation or high-side current sensing. Its output LED current accuracy is ±3%.| Part No. | HV9961 |
|---|---|
| Datasheet | HV9961 Download |
| Manufacturer |  Microchip Technology |
| Description | LED Driver |
| Buy | Stock & Price |
FEATURES
● Fast Average Current Control● Programmable Constant Off-time Switching
● Linear Dimming Input
● PWM Dimming Input
● Output Short-circuit Protection with Skip Mode
● –40°C to +125°C Ambient Operating Temperature
● Pin-compatible with HV9910B
APPLICATIONS
● DC/DC or AC/DC LED DriverAPPLICATIONS
● LED Backlight Driver for LCD Displays● General Purpose Constant-current Source
● LED Signage and Displays
● Architectural and Decorative LED Lighting
● LED Street Lighting
GENERAL DESCRIPTION
Unlike the HV9910B, this control IC does not produce a peak-to-average error. Its output LED current accuracy is ±3%. The IC is equipped with a current limit comparator for Hiccup mode output short-circuit protection. The HV9961 can be powered from an 8V–450V supply. It has a PWM dimming input that accepts an external control TTL-compatible signal. In addition, the output current can be programmed by an internal 275 mV reference or controlled externally through a 0V–1.5V linear dimming input.
