Constant Voltage and Constant Current Controller

FEATURES

◆   Secondary Side Constant Voltage (CV) and Constant Current (CC) Control

◆   Wide VCC Operating Range (3.3V to 36V)

◆   Trimmed 1% Internal Voltage Reference

◆   Wired or Open-Drain Output Stages

◆   Low External Component Count

◆   Low Supply Current: 0.5mA

◆   Easy Frequency Compensation

◆   Operating Temperature Range: -40 to 105℃

APPLICATIONS

◆   Battery chargers

◆   Adaptors

◆   AC/DC LED lighting

GENERAL DESCRIPTION

SFL100 is a highly integrated solution for SMPS applications requiring a dual control loop to perform CV (constant voltage) and CC (constant current) regulation.

SFL100 has wide VCC operating range (3.3V to 36V). The IC integrates a 1.21V voltage reference with ±1% accuracy, two Op-Amps (with OR-d open drain outputs), and a low side current sensing circuit. The voltage reference, along with one Op-Amp, is the core of the voltage control loop; the current sensing circuit and the other Op-Amp make up the current control loop

SFL100 is available in SOT23-6 packages.