STEVAL-ILL026V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – LED open circuit protection

STEVAL-ILL026V1
3 W non-isolated offline LED driver
demonstration board based on the VIPer22A-E
Data brief
Features
■ Input voltage: 90 to 265 V_RMS
■ Provides 350 mA constant current for LEDs
■ Capable of driving 3 x 1 W LEDs in series with
high-precision constant current (± 5%
tolerance)
■ Overtemperature protection
■ LED open circuit protection
■ LED short-circuit protection
■ 230 V_AC input version with no electrolytic
capacitor
■ EN55015 & EN6100-3-2 compliant
■ RoHS compliant
STEVAL-ILL026V1
Description
The progress made in the field of LEDs is visible
on an almost day-by-day basis. Many high power
LEDs are currently on the market, such as 0.7 A
and 1 A devices. However, the most commonly
used LEDs are those with a current of 0.350 A.
This demonstration board is designed for 350 mA
LEDs and is capable of driving three 1 W LEDs in
series with high-precision constant current (± 5%
tolerance). The design is based on the VIPer22A-
E, which combines a dedicated current mode
PWM controller with a high voltage power
MOSFET on the same silicon chip.
The internal control circuit offers a large input
voltage range on the V_DD pin, accommodates
changes in auxiliary supply voltage, and supports
automatic burst mode in low load conditions. The
board also features protections against
overtemperature, overcurrent and overvoltage
conditions.
December 2009
Doc ID 16766 Rev 2
For further information contact your local STMicroelectronics sales office.
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