Transcription of 1.5 A max constant current LED driver - st.com
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1.5 A max constant current LED driver - st.com
July 2008 Rev 21 A max constant current LED driverFeatures Up to 40 V input voltage Less than V voltage overhead Up to A output current PWM dimming pin Shutdown pin LED disconnection diagnostic Slope control with external capApplications LED constant current supplying for varying input voltages Low voltage lighting Small appliances LED lighting Car LED lightsDescriptionThe 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 current is set with external resistor up to A with a 10 % precision; a dedicated pin allows implementing PWM dimming.
July 2008 Rev 2 1/19 19 STCS1A 1.5 A max constant current LED driver Features 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 Applications LED constant current supplying for varying input voltages Low voltage lighting
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