Fixed LDO Voltage Regulator 3.3V 150mA SOT-23-5

The Texas Instruments Fixed LDO Voltage Regulator is a micropower, low-noise, ultra-low dropout device designed to deliver reliable performance in battery-powered applications. It provides an output current of up to 150mA with a typical dropout voltage of just 280mV, ensuring efficient power regulation even with minimal input-to-output voltage differentials.

Utilising an optimised Vertically Integrated PNP (VIP) process, this regulator achieves exceptional performance. It offers a precision output voltage with 1% tolerance and maintains low quiescent current—just 75µA at a 1mA load and 850µA at a 150mA load. By adding a 10nF bypass capacitor, output noise can be further reduced to 30µVRMS within a 30kHz bandwidth, making it ideal for noise-sensitive designs.

Key Features and Benefits

• Ultra-low dropout voltage
• Requires minimum external components
• Stable with low-ESR ceramic output capacitors (ESR as low as 5mΩ)
• Less than 1µA quiescent current when in shutdown mode
• Low ground pin current across all loads
• 1% A Grade output voltage accuracy
• High peak current capability
• Integrated over-temperature and over-current protection

Handling Precautions

Please note that this device has limited built-in ESD protection. During storage or handling, the leads should be shorted together, or the device should be placed in conductive foam to prevent electrostatic damage to the MOS gates.