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Related Links:

Datasheets:
A8530: Ultracompact 6-Channel Backlight and Flash/Torch White LED Driver (PDF)

Selection Guides:
Power Management ICs,

Power Management ICs: Display Power and Backlight,

Power Management ICs: Switching Regulators

when this product is updated

Press Releases:
A8530: Allegro Microsystems, Inc. Introduces High-Efficiency Charge Pump White Led Driver for Display Backlight and Flash/Torch

A8530
Ultracompact 6-Channel Backlight and Flash/Torch Driver

Features

• Proprietary adaptive control scheme (1×, 1.5×, 2×)
• 0.5% typical LED current matching
• 2 separate serial interfaces for dimming control
• Drives up to 6 white LEDs (4 display backlight, 2 flash/torch)
• 30 mA per LED channel for display backlight
• 100 mA per LED channel for flash/torch backlight
• 320 mA total output current capability
• Low EMI design and soft-start function
• Short circuit, overvoltage, thermal shutdown protection
• 0.75 mm very thin profile, 3 mm × 3 mm package

Applications

• White LED backlights for cellular phones, PDAs
• Digital cameras, camcorders
• Other portable device white LED backlighting
• 320 mA WLED flash/torch

Description

The A8530 high efficiency charge pump ICs offer a simple, low-cost white LED driver solution for driving four display backlight and two flash/torch/video mode white LEDs. Using a proprietary control scheme (1×, 1.5×, and 2×), the A8530 can deliver well-matched LED current while maintaining the highest efficiency and low EMI. The LED current is regulated over the entire range of Li+ battery voltage to provide uniform intensity.

LED brightness and on/off can be controlled for 4 display backlight LEDs and 2 flash/torch LEDs through 2 single-wire serial interface pins.

The A8530 is available in a very thin profile (0.75 mm nominal height) 3 × 3 mm QFN/MLP 16 pin package.

Typical Applications

Functional Block Diagram

Complete Part Numbers

Part Number	Package Type	RoHS Compliant	Part Composition/ RoHS Data	Temperature	Comments	Samples	Distributor Stock
A8530EES-T	16-lead QFN	Yes	view data	-40 °C to  85 °C	new	Contact Local Sales Representative
A8530EESTR-T	16-lead QFN	Yes	view data	-40 °C to  85 °C	new	Contact Local Sales Representative

Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.