June 11, 2004

By: Conrad Scott
Website: http://www.1st-in-cell-phones.com

First 24V, White -Led, Flash/Strobe supply for camera phones

Maxim Integrated Products introduces the MAX1583, a high-efficiency, step-up DC-DC converter that drives up to five white LEDs in series with a high constant current to provide camera flash/strobe power in cell phones, PDAs, and other handheld devices.

The MAX1583 integrates a 1MHz, 24V, step-up DC-DC converter and a high-voltage, low-dropout current regulator. It operates from input voltages of 2.6V to 5.5V.

Two logic inputs control four modes of operation: shutdown mode; movie mode (programmable up to 100mA); precharge mode for charging a reservoir capacitor up to 24V while the LEDs are off; and strobe mode for firing the flash with a regulated current (programmable up to 300mA) during an exposure.

The MAX1583 also features overvoltage and thermal shutdown protection.

Also See: cool cell phone accessories.

About The Author:

Conrad Scott is a successful author and regular contributor to http://www.1st-in-cell-phones.com.  A source for info and tips for the cellular phone industry featuring articles, comparisons and reviews of cellular phones and service plans.