A8434 - 6-Channel High Efficiency Charge Pump White LED Driver

Allegro MicroSystems

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Datasheet Details

Part number	A8434
Manufacturer	Allegro MicroSystems
File Size	472.20 KB
Description	6-Channel High Efficiency Charge Pump White LED Driver
Datasheet	A8434_AllegroMicroSystems.pdf

A8434 Product details

Description

The A8434 high efficiency charge pump ICs offer a simple, low-cost WLED (white LED) driver solution for driving up to six WLEDs in various application configurations, either all six backlighting a single display, or for multiple displays, such as four WLEDs as the main display backlight, with the other two WLEDs used for backlighting a sub display or a low-current flash/torch.

Features

Proprietary adaptive control scheme (1×, 1.5×, 2×).
0.5% typical WLED current matching.
Drives up to 6 white LEDs ▫ Main display backlight (up to 6 WLEDs) ▫ Main display and sub display backlight ▫ Main display and low-current flash/torch.
30 mA per WLED.
2× serial dimming interfaces.
320 mA charge pump capability.
Low EMI design and soft start function.
Short circuit, overvoltage, thermal shutdown protection.
0.75 mm nominal height (very thin profil.

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Published: Mar 29, 2007 |