HV9861A Description
The HV9861A is a patented, average-mode, constant current control LED driver IC operating in a constant off-time mode. Unlike the HV9910B, this control IC does not produce a peak-to-average error, and therefore greatly improves the accuracy, line and load regulation of the LED current without any need for loop pensation or highside current sensing. The output LED current accuracy is ±3%.
HV9861A Key Features
- Fast average current control Programmable constant off-time switching PWM / linear dimming input Output short circuit pr
- 450V supply. A PWM dimming input is provided that accepts an external control TTL-patible signal. The output current can
- 1.5V dimming input. The IC is pin-to-pin patible with the Supertex HV9910B and HV9961, and can be used as a drop-in repl