ADM8843

PRODUCTION

Four White LED Backlight Driver

Data Sheet (Rev. E) Product Selection Table

Part Models: 2
1ku List Price: Starting From $0.67

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Part Details

Drives 4 LEDs from a 2.6 V to 5.5 V (Li-Ion) input supply
1×/1.5×/2× fractional charge pump to maximize power efficiency
0.3% typical LED current matching
Up to 88% power efficiency over Li-Ion range
Powers main and sub display LEDs with individual shutdown
Package footprint only 9 mm² (3 mm × 3 mm)
Package height only 0.75 mm
Low power shutdown mode
Shutdown function
Soft start limiting in-rush current

Part Models: 2
1ku List Price: Starting From $0.67

Documentation

Data Sheet 1

ADM8843: Four White LED Backlight Driver Data Sheet (Rev.E) 01/04/2011

Evaluation Design File 1

ADM8843 Evaluation Tools (EVAL-ADM8843) 06/01/2005

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
ADM8843ACPZ-REEL7	16-Lead LFCSP (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
ADM8843ACPZ1-R7	16-Lead LFCSP (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 13, 2014 - 14_0038 Conversion of 3x3mm body Size LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to Amkor Philippines.
		PCN14_0038_Form Material_Report Detailed Change Description Package Outline Drawing Qualification Report Summary
ADM8843ACPZ-REEL7	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Evaluation Kits

ADM8843 Evaluation Tools

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Features and Benefits

ADM8843 drives 4 white LEDs from a 2.6V to 5.5V (li-ion) input supply
1x/1.5x/2x Fractional Charge Pump to maximize power efficiency
0.3% Typ LED Current Matching
Power Sub and main Display LEDs
Low Power Shutdown Mode
Package footprint only 9mm2 (3mm x 3mm)
Package height only 0.9mm
Shutdown Function
Soft-start limiting inrush current

Product Details

The ADM8843 provides two digital input control pins, CTRL1 and CTRL2, which control the operation and the brightness of the LEDs. The ADM8843 is configured with a sub and main display, the main display refers to 3 of the 6 LEDs (FB1 – FB3) and the sub display refers to the remaining LED (FB54).

The ADM8843 provides the option to control the brightness of the LEDs with a digital PWM signal. The duty cycle of the PWM signal determines the brightness of the backlight LEDs. Brightness control of the LEDs can also be controlled by a DC voltage. The ADM8843 has soft-start circuitry to limit inrush current flow at power up.

The ADM8843 is fabricated using CMOS technology for minimal power consumption. The part is packaged in a 16-lead LFCSP (Lead Frame Chip Scale Package).