FAN5607 - Fairchild Semiconductor

FAN5607 LED Driver

The FAN5607 generates regulated output current from a battery with input voltage varying between 2.7V to 5.5V. Switch reconfiguration and fractional switching techniques are utilized to achieve high efficiency over the entire input voltage range. A proprietary internal circuitry continuously monitors each LED current loop and automatically adjusts the generate.

Features

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• Parallel LED Driver Supports all Forward Voltages Adaptive VOUT Adjustment to the Highest Diode Voltage Internally Matched LED Current Sources Built-in Charge Pump has Three Modes of Operation:
  – 1X, 1.5X, and 2X Mode Up to 93% Efficiency Low EMI, Low Ripple Up to 120mA Output Current ( 4 × 30 mA ) External Resistor to Set Maximum (100%) LED Current Enable Input Can be Duty-Cycle-Modulated to Control LED Current Level Between 0 and 100% 2.4V to 5.5V Input Voltage Range ICC < 1µA in Shutdown Mode 1MHz Operating Frequency Shutdown Isolates Output from Input Soft-.