LP3985IM5X-2.8

The Texas Instruments LP3985IM5X-2.8 is a highly efficient linear voltage regulator designed for portable and wireless applications requiring demanding performance and small size. It delivers a stable 2.8V fixed output voltage with a maximum output current of 150mA.

Key electrical characteristics include an ultra-low dropout voltage of 100mV at 150mA load, ensuring efficient power usage from battery-powered systems. The regulator exhibits low quiescent current, drawing only 0.085mA typically, and an even lower 1.5µA in shutdown mode, further extending battery life. It offers excellent power supply rejection ratio (PSRR) of 50dB at 1kHz and low output noise of 30µVrms over a 10Hz to 100kHz bandwidth.

Designed for demanding applications, the LP3985IM5X-2.8 operates over a wide temperature range of -40°C to 125°C. It includes protection features such as over current, over temperature, and short circuit protection. The device is available in a compact SOT-23-5 package, suitable for space-constrained designs, and features logic-controlled enable for flexible power management.

This regulator is ideal for battery-powered devices like mobile phones and wireless communication systems where low noise, low power consumption, and small footprint are critical. It is stable with ceramic or high-quality tantalum output capacitors.