General Description
The AP3615 is a step-up DC-DC converter based on 1x/1.5x charge pump and low dropout current sink, which helps it maintain the highest efficiency. The AP3615 is specially designed to drive up to 5 WLEDs in backlight display.
   
Features
• Regulated Output Current with ±3% Matching
• Drives up to 5 WLEDs at 20mA Each
• 16 Steps Brightness Control Using Pulse Signal
    Dimming
• Wide Operating Voltage Range: 2.8V 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