The LP2985IM5X-3.5 from Texas Instruments is a high-performance, low-noise, low-dropout voltage regulator providing a fixed output of 3.5V with a maximum output current of 150mA.

• Low Dropout Voltage: 17mV (light load), < 165mV (full load)
• Noise Level: 30µVRMS (10Hz to 100kHz)
• Shutdown Current: < 1µA
• Features: Thermal shutdown, short-circuit protection, wide operating temperature range (-40°C to +125°C)
• Package: Small SOT-23-5

It is ideal for battery-powered devices, RF and audio applications, and any application where space and power efficiency are critical.