HV9964 Datasheet - Supertex

HV9964, CCM Boost LED Driver

Supertex inc.CCM Boost LED Driver with Sub-Microsecond PWM Dimming and Open Loop Protection .
The HV9964 is a current mode control LED driver IC designed to control single switch PWM converters (boost or SEPIC) in a constant frequency mode.

Features

* Switch-mode controller for single switch converters
* Boost
* SEPIC
* Current loop closed with sub-microsecond PWM dimming pulses supports PWM dimming >20kHz
* High PWM dimming ratio (>10,000:1)
* Internal 40V linear regulator
* Internal ±2% voltage reference

Applications

* LED backlights for LCD Displays Typical Boost Application Circuit CIN L1 Q1 D1 ROVP1 CO CPVDD RSC RCS ROVP2 RT PVDD RT FLT PWMD HCP VIN GT CS GND OVP DIS IREF FB Q2 HV9964 SS COMP AVDD R CAVDDR1 CHCP CSS CC RS RR2 Doc. # DSFP-HV9964 A100112 Supertex inc. www. supertex. com HV

HV9964-Supertex.pdf