Description
Supertex inc.Closed Loop LED Driver with Enhanced PWM Dimming .
The HV9963 is a current mode control LED driver IC designed to control single switch PWM converters (buck, boost, buckboost or SEPIC) in a constant f.
Features
* Switch-mode controller for single switch converters
* Buck
* Boost
* Buck-boost and SEPIC High output current accuracy High PWM dimming ratio (>5000:1) Internal 40V linear regulator Internal ±2% voltage reference Constant fre
Applications
* RGB or white LED backlighting
* Battery powered LED lamps
* Other DC/DC LED drivers
Typical Application Circuit
D2 (optional)
CIN
Q1
D1
ROVP1
CO
CPVDD
CSC
RCS
ROVP2
VIN GND
PVDD
GT
CS
OVP
FLT FB IREF
Q2
HV9963
SYNC SS COMP RT
PWMD HCP
AVDD
RREF1 RREF2
RS
CHCP
C