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Overview - S-8813 series

3-Channel Constant Current Output DC-DC Converter S-8813 series

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.

DATA SHEET
2007.12.20

Features


    • PFM control CMOS charge pump
    • Built-in constant-current circuit
    • Power supply voltage: 2.7V to 4.5V
    • Output current value: A current variable is possible between 5.0mA and 18mA
      (at VIOUT1,2,3 less-than or equal to 4.0V, VIN = 3.0V)
      Variable voltage type and Variable current setting resistance type are available.
    • Terminal output current matching: ±1% max.
    • Built-in soft start circuit: 1.5ms 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

Standard Circuit