Microchip Technology HV9910B
HV9910B is an open loop, current mode control, LED driver IC. This IC can be programmed to operate in either a constant frequency or constant off-time mode. It includes an 8.0 - 450V linear regulator which allows it to work from a wide range of input voltages without the need for an external low voltage supply.FEATURES
● Switch mode controller for single switch LED drivers● Enhanced drop-in replacement to the HV9910
● Open loop peak current controller
● Internal 8.0 to 450V linear regulator
● Constant frequency or constant off-time operation
● Linear and PWM dimming capability
● Requires few external components for operation
APPLICATIONS
● DC/DC or AC/DC LED driver applications● RGB backlighting LED driver
● Back lighting of flat panel displays
● General purpose constant current source
● Signage and decorative LED lighting
● Chargers
DESCRIPTION
HV9910B includes a PWM-dimming input that can accept an external c