Datasheet for ADM8845:
- Manufacturer Part Number : ADM8845
- Manufacturer : AD
- Description : Charge Pump Driver for 6 White LED LCD Backlights
- Series : ADM8845
- Reference Price : USD 0
- Our Price : We have a better price, contact us by email
- Product Type : LED Driver IC
- Function : Inductorless (Charge Pump) LED Drivers
- Current Suggest : Production
- Status : Obsolete
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : ADM8845
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
Contact us to check the best price and real time inventory quantity for ADM8845. If you need any more information about ADM8845, you can also send us by email. Our email is [email protected], we will reply you in 12 hours.
The ADM8845 uses charge pump technology to provide thepower required to drive up to six LEDs. The LEDs are used forbacklighting a color LCD display, having regulated constant current for uniform brightness intensity. The main display canhave up to four LEDs, and the sub display can have one or two LEDs. The digital CTRL1 and CTRL2 input control pins controlthe shutdown operation and the brightness of the main and subdisplays.
To maximize power efficiency, the charge pump can operate ina 1×, 1.5×, or 2× mode. The charge pump automaticallyswitches between 1×/1.5×/2× modes, based on the input voltage,to maintain sufficient drive for the LED anodes at the highestpower efficiency.
Improved brightness matching of the LEDs is achieved by afeedback pin to sense individual LED current with a maximum matching accuracy of 1%.
Applications
- Cellular phones with main and sub displays
- White LED backlighting
- Camera flash/strobes and movie lights
- Micro TFT color displays
- DSC
- PDAs
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
