AP3156：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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AP3156 | AP3156.pdf | - | Charge Pump LED Driver | 2.7 | 5.5 | 5.5 | 6 | 30 | - | 0.5/ 1.0/ 2.0 | 88 | 1.5 | 1 | - | SDI | Yes | - | - | -40 to +85 |
Description
The AP3156 is a 6-channel low noise, constant frequency charge pump DC/DC converter that uses a tri-mode load switch (1X), fractional (1.5X), and doubling (2X) conversion to maximize efficiency in white °C applications. The AP3156 is capable of driving 6 °C channels at a combined maximum of 120mA from a 2.7V to 5.5V input. The current sink outputs may be operated individually or in parallel for driving higher-current °Cs. A low external parts count (two 1μF flying capacitors and two small 1μF capacitors at VIN and VOUT) make this part ideally suited for small, battery-powered applications. The AP3156's serial digital input is used to enable, disable and set current for each °C with a 32-level logarithmic scale plus four low-current settings down to 50μA for optimized efficiency, with a low quiescent current of only 50μA.
Application
- Color (RGB) Lighting
- Programmable Current Sinks
- White LED Backlighting
- Keypad illumination
- Small LCD screen backlighting
- White Photo Flash for Digital Still Cameras
Ordering Information
- AP3156FVG-7
QFN4040-16
- AP3156.pdf AP3156
