STCS2ASPR

STCS2ASPR is a 2A max constant current LED driver. It is a BiCMOS constant current source designed to provide precise constant current starting from a varying input voltage source. The main target is to replace the discrete components solution for driving LEDs in low voltage applications such as 5V, 12V or 24V, giving benefits in terms of precision, integration and reliability. The current is set with an external resistor up to 2A 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 the reduction of EMI. An open-drain pin output provides information on the load disconnection condition. Typical applications include LED constant current supplying for varying input voltages, low-voltage lighting, small appliances LED lighting, and car LED lights.

• Less than 0.5V voltage overhead
• PWM dimming pin, shutdown pin
• LED disconnection diagnostic
• Slope control with external cap
• Supply voltage range from 4.5 to 40V
• Quiescent current (measured on VCC pin) is 1µA max at shutdown mode;VCC = 5 to 12V
• Dropout voltage (VDRAIN to GND) is 0.12V typ at IO = 100mA
• Rise/fall time of the current on PWM transition is 800µs at CSLOPE = 10nF,TJ = -40°C to 105°C
• PowerSO-10 package
• Junction temperature range from -40 to 150°C