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STCS1A Datasheet

  • STCS1A

  • 1.5 A max constant current LED driver

  • 19頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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STCS1A
1.5 A max constant current LED driver
Features
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Up to 40 V input voltage
Less than 0.5 V voltage overhead
Up to 1.5 A output current
PWM dimming pin
Shutdown pin
LED disconnection diagnostic
Slope control with external cap
DFN8 (3 x 3 mm)
Power SO-8
Applications
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LED constant current supplying for varying
input voltages
Low voltage lighting
Small appliances LED lighting
Car LED lights
The current is set with external resistor up to 1.5
A with a 鹵 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.
Description
The STCS1A 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
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.
Table 1.
Device summary
Order codes
STCS1APUR
STCS1APHR
Packages
DFN8 (3 x 3 mm)
Power SO-8
Packaging
3000 parts per reel
2500 parts per reel
July 2008
Rev 2
1/19
www.st.com
19

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