Description

The FAN7346 is an LED current-balance controller that controls 4-LED arrays to maintain equal LED current.

The FAN7346 has a high withstanding voltage, so is suitable for edge-type LED BLU and LED Lighting. To minimize components between primary to secondary, the FAN7346 generates a new integrated feedback signal.

Features

Linear Balance Control for 4-Channel LED Arrays

Wide LED String Voltage Range: 100V

Wide VCCVoltage: 10.5V to 35V

External Linear Regulation Switch: MOSFET or BJT

Internal Voltage Regulator for Feedback

Monitoring Drain-Source Voltage of External Switch

Precision Current Accuracy Trimmed to 1.5

Supports External PWM Dimming - Positive

Supports Wide Dimming Ratio: 0.5~100

Adaptive Linear Regulation Method

Generate Integrated Feedback Signal for Primary Controller (Current Feedback + PWM Dimming)

High Efficiency by Primary Side Direct Feedback

Thermal Shutdown (Auto-Recovery)

Over-Voltage Regulation

Channel Individual Open-LED Protection

Channel Individual Short-LED Protection

Channel Individual Over-Current Protection

Error Flag Output

28-Pin SOIC

Applications

LED BLU for LCD TV

LED BLU for LCD Monitor

LED Lighting