Product category: Power Supply ICs and Controllers
News Release from: Maxim Integrated Products | Subject: MAX1542 and MAX1543
Edited by the Electronicstalk Editorial Team on 25 February 2003
Display regulators take op amps onboard
The MAX1542 and MAX1543 are high-performance step-up regulators that each include two high-current operational amplifiers.
The MAX1542 and MAX1543 are high-performance step-up regulators that each include two high-current operational amplifiers Designed for active-matrix, thin-film transistor (TFT) liquid-crystal displays (LCDs), they include a logic-controlled, high-voltage switch with adjustable delay
This article was originally published on Electronicstalk on 27 Aug 2002 at 8.00am (UK)
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The MAX1543 has an additional high-voltage switch and features a pin-selectable step-up regulator switching frequency.
These high-frequency current-mode regulators (640kHz for MAX1543, 1.2MHz for both MAX1543/MAX1542) have a built-in power mosfet, allowing for ultra-small inductors and ceramic capacitors.
They provide fast-transient response to pulsed loads while achieving over 85% efficiency.
The high-performance op amps can drive an LCD backplane (VCOM) and/or a gamma correction divider string, or can be used for other purposes.
They feature high short-circuit current (150mA), fast slew rate (7.5V/us), wide bandwidth (12MHz), and rail to rail inputs and outputs.
The MAX1542 and MAX1543 are available in 20-pin, thin QFN packages (5 x 5 x 0.8mm) for ultra-thin LCD panel design.
Prices start at $3.40 (1000-up, FOB USA.).
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