| Description & Applications | FEATURES • 3-CHANNEL WHITE LED DRIVER IC (CHARGE PUMP IC WITH BUILT-IN CONSTANT-CURRENT CIRCUIT) • 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.) • Lead-free 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 |