ADP5520
NOT RECOMMENDED FOR NEW DESIGNSBacklight Driver with I/O Expander
- Part Models
- 2
- 1ku List Price
- price unavailable
Overview
- Efficient asynchronous boost converter for driving up to 6 white LEDs
- 2.7 V to 5.5 V input voltage range
- 128 programmable backlight LED current levels (30 mA maximum)
- Ambient light sensing with autonomous backlight adjustment
- Programmable backlight fade-in/fade-out times
- Programmable backlight dim and off times
- 8 configurable GPIO pins (input, output, up to 4 × 4 keypad)
- Up to 3 auxiliary LED current sinks (1 dedicated, 2 configurable)
- 64 programmable auxiliary LED current levels (14 mA maximum)
- Programmable auxiliary LED fade-in/fade-out times
- Programmable auxiliary LED on and off times (allows blinking)
- I2C-compatible serial interface
- Interrupt line for signaling an external processor (INT)
- Hard reset (RST)
- Current limit protection
- Thermal overload protection
- Available in small 4.0 mm × 4.0 mm, 24-lead LFCSP package
The ADP5520 is a versatile single-chip, white LED backlight driver with a user configurable I/O expander. This device fits handset applications where the flip or slider section of the phone requires backlighting, I/O signaling and detecting, auxiliary LED lighting, and keypad functions. By incorporating an I2C-compatible serial interface and a single line interrupt, the ADP5520 significantly reduces the total number of lines required to interface with the baseband processor across the hinge flex.
The ADP5520 can detect ambient light levels and adjust the backlight brightness accordingly, resulting in extended battery operation.
Once configured, the ADP5520 is capable of controlling the flip/slider backlight intensity, on/off timing, dimming, and fading without the intervention of the main processor, which results in valuable battery power saving.
Applications
- Display backlight driver for phones that require slider or flip keypad functions with single or multiple LED indicators
Documentation
Data Sheet 1
Evaluation Design File 1
Device Drivers 1
Power Reference Designs 1
Analog Dialogue 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADP5520ACPZ-R7 | 24-Lead LFCSP (4mm x 5mm w/ EP) | ||
| ADP5520ACPZ-RL | 24-Lead LFCSP (4mm x 5mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
May 5, 2014 - 14_0020 Conversion of 4x4mm body Size LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to Amkor Philippines. |
||
| ADP5520ACPZ-R7 | ||
| ADP5520ACPZ-RL | ||
|
Feb 15, 2010 - 07_0061 LFCSP Package Manufacturing Line Transfer from Amkor Korea to Amkor PRC |
||
| ADP5520ACPZ-RL | ||
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 1
Evaluation Software 0
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| ADP5586 | PRODUCTION | Keypad Decoder and I/O Port Expander |
Evaluation Kits
ADP5520 Evaluation Board