AP3605：LED Drivers for Displays / Backlights
| Part Number | Data Sheet | SPICE Model | Function | MinimumInput Voltage (V) | MaximumInput Voltage (V) | Maximum Output Voltage (V) | Number of Regulated Output Channels | Maximum Output Current per Channel (mA) | Typical Over-Current Protection Current (mA) | Switching Frequency (MHz) | Efficiency (%) | Quiescent Current (mA) | Standby Quiescent Current (µA) | SW RDS(ON) (Ω) | Dimming | OVP | Soft Start | VFB (V) | OperatingTemperatureRange (°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AP3605 | AP3605.pdf | - | Charge Pump LED Driver | 2.7 | 5.5 | 5.5 | 4 | 20 | - | 1 | 93 | 1.5 | 0.1 | - | PWM | No | No | - | -40 to +85 |
Description
The AP3605 is a step-up DC/DC converter based on 1.5x charge pump current source, it is specially designed for °C supplies in backlight display. The AP3605 can provide constant current up to 20mA for each °C, which is programmed by an external resistor, so it has a total capability to provide 80mA for 4 °Cs. The chip has a good performance of °C current matching and allows PWM brightness dimming control. Additionally, high switching frequency up to 1MHz enables the use of two small external flying capacitors. Internal soft-start circuitry prevents excessive inrush current during start-up. The AP3605 supply voltage range is from 2.7V to 5.5V, ideally suited for applications powered by the Liion battery. The AP3605 is available in a 3mmx3mm QFN-3x3-16 tiny package. Its operating temperature range is -40oC to 85oC.
Application
· Mobile Phone · MP3, MP4 · White LED Backlight in Mobile Phone, PDA
U-QFN3030-16
- AP3605.pdf AP3605
