(Taiwan)The 78D09L-TN3-R is a linear voltage regulator from Unisonic (Taiwan) that comes in a TO-252-2 (DPAK) RoHS package. It is designed to regulate a fixed output voltage of ±9V, with an adjustable output voltage range of 3V to 37V. It has a maximum output current of 500mA, a maximum power dissipation of 625mW, and an input voltage range of 6.5V to 40V DC. The device also offers overcurrent protection, overtemperature protection, output short circuit protection, and reverse polarity protection. Additionally, the device has an ultra-low quiescent current consumption of 250µA typ. and high efficiency of up to 88%.