STCS05A Datasheet, PDF (1/18 Pages) STMicroelectronics – 0.5 A max constant current LED driver

STCS05A
0.5 A max constant current LED driver
Features
■ Up to 40 V input voltage
■ Less than 0.5 V voltage overhead
■ Up to 0.5 A output current
■ PWM dimming pin
■ Shutdown pin
■ LED disconnection diagnostic
■ Slope control with external cap
Applications
■ LED constant current supplying for varying
input voltages
■ Low voltage lighting
■ Small appliances LED lighting
■ Car LED lights
Description
The STCS05A is a BiCMOS constant current
source designed to provide a precise constant
current starting from a varying input voltage
source. The main target is to replace discrete
SO-8
components solution for driving LEDs in low
voltage applications such as 5 V, 12 V or 24 V
giving benefits in terms of precision, integration
and reliability.
The current is set with external resistor up to 0.5
A with a ± 10 % precision; a dedicated pin allows
implementing PWM dimming. An external
capacitor allows setting the slope for the current
rise from tens of microseconds to tens of
milliseconds allowing reduction of EMI.
An open-drain pin output provides information on
load disconnection condition.
Table 1.
Device summary
Order code
STCS05ADR
July 2008
Package
SO-8
Rev 2
Packaging
2500 parts per reel
1/18
www.st.com
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