3-CHANNEL WHITE LED DRIVER IC (CHARGE PUMP IC WITH BUILT-IN CONSTANT-CURRENT CIRCUIT)

The S-8813 Series is a PFM control charge pump DC-DC converter with a built-in constant-current circuit, and was developed using CMOS technology. Its constant current output makes this series ideal as a power supply for current drive LEDs.
The S-8813 Series features three output channels and can drive three LEDs.
This series is available in two types: a variable voltage type and a variable current setting resistance type.
Moreover, since small ceramic capacitors can be used as external capacitors (pump capacitors, input capacitors, output capacitors), the S-8813 Series contributes to set miniaturization.

Features
• PFM control CMOS charge pump
• Built-in constant-current circuit
• Power supply voltage: 2.7 V to 4.5 V
• Output current value: A current variable is possible between 5.0 mA and 18 mA
                                     (At VIOUT1,2,3≤4.0 V, VIN=3.0 V)
                                     Variable voltage type and Variable current setting resistance type are available.
• Terminal output current matching: ±1% max.
• Built-in soft start circuit: 1.5 ms typ.
• Constant current output pins: 3 channels, ±5% accuracy
• Oscillation frequency: 600 kHz typ.
• ON/OFF function provided (During standby: 1 µA max.)
• Ultra-small package: 10-Pin SON(B)
• Lead-free products

Applications
• Power supply for white LED display backlights
• Constant-current circuit
• Cellular phones and PDAs using 1-cell lithium batteries
• Power supply for flat panel displays