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