The MST1172TS is a dual input, LED driver in a SOT-89 RoHS package manufactured by MST. This device is capable of driving up to 1A into a string of two LEDs with 20mA per LED. It provides wide input voltage range (2.5-40V) and can regulate the brightness of the LED string via an external current setting resistor or external PWM control signal. It also has integrated thermal shutdown protection, short circuit protection, and low on-time stability. The device is RoHS compliant, making it environmentally friendly.