GENERAL DESCRIPTION

OB3671AZ is a high performance driver with advanced features to provide high efficiency control to remove/suppress the 100/120 Hz current ripple for LED lighting applications.

OB3671AZ integrates a 100V MOSFET，and the LED current is recommended to set below 0.5A. It controls the internal MOSFET drain voltage to minimize power dissipation while suppressing current ripple.

OB3671AZ allows user to set up maximum LED current by the sensing the resistor between CS pin and ground. It also allows user to set up the maximum cathode voltage of LED string via a resistor between the drain of the DRAIN pin and LEDN pin.

OB3671AZ offers comprehensive protection coverage with features including LED open loop protection, LED short circuit protection, current limiting, VCC under voltage lockout (UVLO), comp floating protection, over temperature protection etc.

OB3671AZ supports current dimming from 100% to 5%.

OB3671AZ is offered in ESOP-8 package.

FEATURES

Driver for 100/120Hz current ripple removal/suppress

Integrated 100V MOSFET

Programmable maximum LED current

Built in VCC voltage clamping

Supports wide dimming range: 5%-100%

Supports hot-plug

LED short protection with programmable threshold

VCC under voltage lockout (UVLO)

Comp floating protection

Over temperature protection

ESOP-8 Package

APPLICATIONS

LED lighting

TYPICAL APPLICATION