Product category:
Power Supply ICs and Controllers
News Release from: Toshiba Electronics Europe | Subject: TB62737FUG
Edited by the Electronicstalk Editorial
Team on 31 May 2005
White LED driver cuts backlights down to
size
A new white LED driver chip provide precise brightness control and minimises external component count in LCD backlight applications.
Toshiba Electronics Europe has a new IC for driving the white LEDs used to backlight LCD panels in cellphones, PDAs, portable gaming equipment and other mobile devices Designed to provide precise brightness control and to minimise external component count, the TB62737FUG white LED driver IC incorporates an overvoltage protection function and operates at a high efficiency to maximise battery life
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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Toshiba has engineered the TB62737FUG white LED driver to provide an optimum combination of overvoltage protection, high-precision current regulation and high efficiency.
This optimised design reduces total circuit size and helps engineers to minimise the form factor of their portable devices.
The TB62737FUG incorporates an overvoltage detection pin that minimises the need for external components by enabling protection against overvoltage conditions such as those caused by an open LED.
At 87%, the devices operating efficiency is 2% higher than that of previous products, facilitating longer rechargeable battery life.
A guaranteed, high-precision current regulation of +/-5% suppresses white LED brightness fluctuation to ensure exact control of backlight brightness.
Toshiba's new LED driver IC is based on a BiCD process that includes a double diffused MOS (DMOS) with a high-withstand voltage and large-current capacity, a bipolar transistor with a high-current drive and CMOS for low-power consumption and high integration.
The device is housed in an SOT23-6 package with package dimensions of 2.9 x 2.8mm (including lead length).
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