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MPLAB® Mindi™ Analog Simulator Software Library
Analog Simulation - HV9861A
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 compensation or high-side current
sensing. The output LED current accuracy is ±3%.
The IC is equipped with a current limit comparator for hiccup-mode
output short circuit protection. Internal over-temperature protection is
provided. The internally regulated voltage (VDD) for the HV9861A is
7.5V.
The IC can be powered from a 15 - 450V supply. A PWM dimming input is
provided that accepts an external control TTL-compatible signal. The
output current can be programmed by an internal 270mV reference, or
controlled externally through a 0 - 1.5V dimming input.
The IC is pin-to-pin compatible with the Supertex HV9910B and HV9961,
and can be used as a drop-in replacement for many applications to
improve the LED current accuracy and regulation.
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 compensation or high-side current
sensing. The output LED current accuracy is ±3%.
The IC is equipped with a current limit comparator for hiccup-mode
output short circuit protection. Internal over-temperature protection is
provided. The internally regulated voltage (VDD) for the HV9861A is
7.5V.
The IC can be powered from a 15 - 450V supply. A PWM dimming input is
provided that accepts an external control TTL-compatible signal. The
output current can be programmed by an internal 270mV reference, or
controlled externally through a 0 - 1.5V dimming input.
The IC is pin-to-pin compatible with the Supertex HV9910B and HV9961,
and can be used as a drop-in replacement for many applications to
improve the LED current accuracy and regulation.