0
In Production
Topology |
Buck |
+Vin min (V) |
8 |
+Vin max (V) |
450 |
Output Current |
External FET |
Dimming |
PWM / Linear |
Package |
SOIC-8, SOIC-16 |
Product Type |
Off Line |
Type |
Average-Mode |
Operating Iq (µA) |
0.5 |
Vfb (V) |
0 |
ILED Accuracy |
±3% |
Oja (C/W) |
128, 82 |
Extra LDOs |
0 |
Vdropout (mV) |
0 |
IQ LDO |
0 |
The HV9961 is an average current mode control LED driver IC operating in a constant off-time mode. Unlike HV9910B, this control IC does not produce a peak-to-average error, and therefore greatly improves 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. The HV9961 can be powered from an 8.0 - 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 275mV reference, or controlled externally through a 0 - 1.5V dimming input. HV9961 is pin-to-pin compatible with HV9910B and it can be used as a drop-in replacement for many applications to improve the LED current accuracy and regulation.
WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK
