The STCS05A is a 0.5A maximum constant current LED driver with features such as an input voltage of up to 40V, a voltage overhead of less than 0.5V, an output current of up to 0.5A, a PWM dimming pin, a shutdown pin, a LED disconnection diagnostic, and slope control with an external cap.
The STCS05A is a BiCMOS constant current source designed to provide a precise constant current starting from a varying input voltage source. It is primarily intended to replace discrete component solutions for driving LEDs in low voltage applications such as 5V, 12V, or 24V, offering benefits in precision, integration, and reliability.
| Output current | Up to 0.5 A |
|---|---|
| Input voltage | 4.5 to 40 V |
| Feedback voltage | 100 mV |
| Quiescent current | 450 to 750 µA |
| Dropout voltage | 0.12 to 0.9 V |
| Thermal shutdown temperature | 155 °C |
| Package | SO-8 |
The current is set with an external sensing resistor connected to the FB pin, where the feedback voltage is 100 mV.
When the enable pin is low, the device turns completely off, reducing current consumption to less than 1 µA.
An external capacitor connected to the SLOPE pin allows setting the slope for the current rise to reduce EMI.