Product category: Power Supply ICs and Controllers
News Release from: Maxim Integrated Products | Subject: MAX1582
Edited by the Electronicstalk Editorial Team on 05 May 2003
White LED driver powers six in a row
The MAX1582 is the first white LED driver to power up to six white LEDs in series with a constant current.
The MAX1582 is the first white LED driver to power up to six white LEDs in series with a constant current It provides display backlighting for two displays (the larger main and the smaller sub) in cellphones, eliminating the need for ballast resistors, external switches, and expensive factory calibration to match white LED brightness
This article was originally published on Electronicstalk on 27 Aug 2002 at 8.00am (UK)
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The MAX1582 operates at constant 1MHz switching frequency, enabling use of a low-profile inductor and a tiny 0.1uF output capacitor.
Other features include analogue or direct-digital PWM brightness control, low 15mV peak-to-peak input ripple, soft-start for zero inrush current, and overvoltage protection to eliminate a zener protection diode.
The MAX1582 is available in space-saving, 12-pin thin QFN (4 x 4mm) and chip-scale UCSP (2.1 x 2.1 x 0.61mm) packages, and is screened for the extended-industrial temperature range (-40 to +85C).
Prices start at $2.11 (1000-up, FOB USA).
An evaluation kit is available to speed designs.
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