| General Description The AP3606 and AP3607 are step-up DC-DC converters based on 1x/1.5x charge pump and low dropout current sink, which helps them maintain the highest efficiency. The AP3606 is specially designed to drive up to 4 WLEDs in backlight display while the AP3607 is designed for 6 WLEDs. Features • Regulated Output Current with ±3% Matching • Drives up to 4 WLEDs at 20mA Each (AP3606) Drives up to 6 WLEDs at 20mA Each (AP3607) • 16 Steps Brightness Control Using Pulse Signal Dimming • Wide Operating Voltage Range: 2.7V to 5.5V • High Operating Frequency: 1MHz • Auto 1x/1.5x Charge Pump Mode Selection • Built-in Soft-start • Output Over Voltage Protection • Built-in UVLO • Built-in OTSD • Operating Temperature Range: -40°C to 85°C Applications • Mobile Phone • PDA • MP3/4 |
