Texas Instruments Fixed LDO Voltage Regulator 3.3V 150mA

Texas Instruments 3.3V Fixed LDO Voltage Regulator 150mA is a fixed-output, low-dropout voltage regulator that delivers a 3.3 V output from an input range of 2.2 V to 16 V, with a rated output current of 150 mA. Its dropout voltage of 280 mV at full rated load makes it suitable for both portable and non-portable electronic applications.

Overview

The regulator provides a precise 3.3 V output and is available in two output voltage tolerance grades: 1% for the A version and 1.5% for the non-A version. This accuracy supports stable power for sensitive circuitry. The device is designed for quiet operation, generating 30 µVRMS of noise when paired with a 10 nF bypass capacitor, and remains stable with low-ESR ceramic capacitors, which simplifies board design.

Protection and Efficiency

Built-in over-current and over-temperature shutdown protection safeguards the regulator and the application from fault conditions. The device also offers high peak-current capability for handling transient loads. A quiescent current of 850 µA at full load and a typical shutdown current of 0.01 µA help to maximise battery life in portable devices.

Key Features

• Fixed 3.3 V output voltage
• Input voltage range of 2.2 V to 16 V
• 280 mV dropout voltage at full rated load of 150 mA
• Output tolerance of 1% (A version) or 1.5% (non-A version)
• Compact surface-mount SOT-23-5 package
• Green product, manufactured without antimony or bromine (No Sb/Br)

Handling Note

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

With its combination of precision, low dropout, low noise, and robust protection, this regulator suits a wide range of consumer electronics and portable devices where board space is limited.