Product category:
Power Supply ICs and Controllers
News Release from: Texas Instruments (April 2006-) | Subject: TPS61165
Edited by the Electronicstalk Editorial
Team on 03 January 2008
LED driver powers three bright diodes
The TPS61165 can drive backlight LEDs for media form factor displays up to 9in diameter, such as those used in ultramobile PCs and LCD photo frames.
Texas Instruments has a new high-brightness LED driver with an integrated 40V/1.2A switch that can drive up to three 1W LEDs in series The new TPS61165 device's high-performance features and input voltage range of 3 to 18V allow designers to efficiently manage multiple high-power LEDs used in single-cell, battery-powered applications or point-of-load designs with a 9 or 12V bus
This article was originally published on Electronicstalk on 4 Apr 2006 at 8.00am (UK)
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The TPS61165 allows LED brightness to be controlled by a digital single-wire interface or pulsewidth modulating (PWM) signal.
The digital interface can program an internal register to set the LED current to one of the 32 logarithmic steps.
The convertor also comes with built-in protection features, such as open LED protection, soft-start, overcurrent limit and overtemperature protection.
In addition to driving illumination LEDs, the TPS61165 can drive backlight LEDs for media form factor displays up to 9in diameter, such as those used in ultramobile PCs and LCD photo frames, industrial laser diodes or medical and industrial lighting.
TI also introduced its new TPS61160 and TPS61161 convertors that support input voltages from 3 to 18V.
Both devices integrate a 0.6A current switch and target portable and battery powered applications with small displays, such as small 3 or 4in LCD backlighting in portable game players, GPS systems and smart phones.
The TPS61160 drives up to six LEDs with 26V open LED protection, whereas the TPS61161 drives up to 10 LEDs with 38V open LED protection.
As with the TPS61165, the brightness of the LED can be controlled by a singe-wire digital interface or PWM signal, and analogue dimming eliminates noise.
The TPS61165, TPS61161 and TPS61160 are available today from TI, and come in thin 2 x 2mm QFN packages.
Suggested resale price starts at US $0.85 in 1000-unit quantities for TPS61160, $1.00 for TPS61161 and $1.40 for TPS61165.
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