New Dual Output White LED Drivers for LCD Display Backlighting

Description

CPS Expo 2006– Shanghi, China - ON Semiconductor (Nasdaq: ONNN), a leading global supplier of efficient power management solutions, expands its LED portfolio with the addition of two dual output white LED drivers for handheld and consumer applications. Offered in the tiny 2.0 mm x 2.0 mm x 0.55 mm LLGA-12 package, the NCP5602 and NCP5612 are the industry’s smallest dual output charge pumps for driving LCD display backlighting. Each device achieves up to 87 percent peak efficiency with 0.2 percent LED-to-LED matching, thus assuring matched and consistent brightness.

The NCP5602 and NCP5612 have a built-in ICON function that drives a low current through one of the two LEDs, allowing the clock display to be seen even in a dark environment. This dimming mode eliminates the need for additional software programming and simplifies overall design. To ensure safe operation without adding extra components, the NCP5602 and NCP5612 feature short-circuit and overvoltage protection.

“As LED technology and brightness improves, small handheld LCD displays will require fewer white LEDs for backlighting,” said Hyung-Sup Kim, ON Semiconductor’s director for the Consumer Products Division. “The new white LED drivers we are introducing are the smallest dual LED boost drivers on the market today. The fully protected and integrated NCP5602 and NCP5612 highlight ON Semiconductor’s commitment to developing and delivering smaller, more functional devices for power management in portable devices.”

Key Product Features
  • Powers two white LEDs with 0.2 percent LED current matching
  • Achieves 87 percent peak efficiency with 1x and 1.5x operating mode
  • Built-in short circuit and overvoltage protection
  • Programmable dimming ICON function
    • NCP5612 supports the single wire serial link (S-Wire Link) protocol
    • NCP5602 supports I2C protocol
  • Available in the smallest, thinnest package on the market

The NCP5602 and NCP5612 are both offered in a lead-free (Pb-free) LLGA-12 package. They are budgetary priced at $0.60 USD per unit in 1,000 unit quantities.

Specs

* Support the Single Wire Serial Link protocol * Peak efficiency 90% with 1x and 1.5x mode * Programmable dimming ICON Function * Built-in Short Circuit Protection * Provides 16 steps current control * Controlled start-up inrush current * Built-in Automatic Open Load Protection * Tight 0.2% Matching Tolerance * Accurate 1% Output Current Tolerance * Smallest Available Package on the Market * LCD and Key Board simultaneously drive * Built-in Short Circuit Protection
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