0
In Production
Topology |
Buck |
+Vin min (V) |
7 |
+Vin max (V) |
13.2 |
Output Current |
External FET |
Dimming |
PWM / Linear |
Package |
SOIC-8 |
Operating Iq (µA) |
1.5 |
Vfb (V) |
0 |
Extra LDOs |
0 |
Vdropout (mV) |
0 |
IQ LDO |
0 |
The HV9803 is an open loop average-mode current control LED driver IC operating in a constant off-time mode. The IC features ±2% current accuracy, tight line and load regulation of the LED current without any need for loop compensation or high-side current sensing. Its auto-zero circuit cancels the effect of both the input offset voltage and the propagation delay in the current sense comparator. The HV9803 can be powered from a 7.0~13.2V supply. The IC features fast PWM dimming response. The linear dimming input LD can accept a reference voltage up to 2.5V. The IC is equipped with a current limit comparator for hiccup-mode output short circuit protection. It also features a programmable input under-voltage shutdown.
WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK
