Datasheet for ADM8843EB-EVALZ:
- Manufacturer Part Number : ADM8843EB-EVALZ
- Manufacturer : AD
- Description : Four White LED Backlight Driver IC
- Series : ADM8843
- 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 : Production
- ROHS Status : ROHS Compliant (Lead Free)
- Package Type : Evaluation Board
- Pins : -
- MFG Package Case : -
- Part Type : EVAL
- Standard Packing Type : -
- Standard Packing Quantity : -
- Working Temperature : -
- Other Part Number : ADM8843EB-EVALZ
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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The ADM8843 uses charge pump technology to provide thepower to drive up to four LEDs. The LEDs are used for backlightinga color LCD display that has regulated constant currentfor uniform brightness intensity. The main display can use up tothree LEDs, and the sub display uses one LED. The CTRL1 andCTRL2 digital input control pins control the shutdown operationand the brightness of the main and sub displays.
To maximize power efficiency, the charge pump can operate in1×, 1.5×, or 2× mode. The charge pump automatically switchesamong 1×/1.5×/2× modes, based on the input voltage, tomaintain sufficient drive for the LED anodes at the highestpower efficiency.
Improved brightness matching of the LEDs is achieved by afeedback pin that senses individual LED current with a typicalmatching accuracy of 0.3%.
Applications
- Cellular phones with main and sub displays
- White LED backlighting
- Camera flash/strobes and movie light applications
- 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.
