LED string drivers
27 October 2010
Opto-Electronics
Linear Technology has introduced the LTM8042 and LTM8042-1, DC/DC uModule LED drivers for strings of up to eight white LEDs or nine red LEDs.
Capable of operating as boost, buck or buck-boost with 3 V to 30 V input voltage range, each device is a complete LED driver solution in a 9 x 15 x 2,8 mm LGA (land grid array) package.
Both ICs boast 0,5% output current line regulation accuracy and can withstand up to 40 V input transients. The LTM8042 sources up to 1 A of current, whereas the LTM8042-1 sources up to 350 mA. Each features ‘True Colour’ PWM dimming with 3000:1 ratio or analog dimming with 10:1 ratio. They are aimed at industrial illumination, backlight displays, scanners, automotive and avionics lighting.
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