TLV70433DBVR

Product Overview

TLV70433DBVR is a Texas Instruments linear voltage regulator that provides a fixed positive 3.3 V output from a single channel. It is rated for a maximum input voltage of 24 V and a maximum output current of 150 mA, with a maximum dropout voltage of 1.1 V at 100 mA. The device uses a surface-mount SOT-23-5 package, also identified as SC-74A or SOT-753, and is specified for a junction temperature range of -40°C to 125°C. Protection features include over-current and reverse-polarity protection, while quiescent current is 4.5 µA and maximum supply current is 5.5 µA. The 60 dB power-suppression ratio is specified at 100 kHz.

Key Features

• Fixed positive 3.3 V output from a single linear regulator channel
• Maximum input voltage of 24 V and maximum output current of 150 mA
• Maximum dropout voltage of 1.1 V at 100 mA
• Quiescent current of 4.5 µA and maximum supply current of 5.5 µA
• Over-current and reverse-polarity protection; 60 dB PSRR at 100 kHz
• Surface-mount SOT-23-5 package, also referenced as SC-74A or SOT-753, with a -40°C to 125°C junction temperature range

Applications

• Generating a fixed 3.3 V rail for low-current digital circuits
• Supplying compact embedded modules that require a single positive linear output at up to 150 mA
• Regulating input rails up to 24 V down to 3.3 V in space-constrained surface-mount designs

Design & Procurement Notes

Design and procurement considerations should center on the fixed 3.3 V single-output architecture, the 150 mA current limit, and the 24 V maximum input rating. Because the maximum dropout voltage is 1.1 V at 100 mA, the input supply must remain high enough to maintain regulation across the intended load range. The operating temperature is junction temperature, so thermal design should account for power dissipation within the SOT-23-5 package. Confirm that the SOT-23-5 footprint, and the SC-74A or SOT-753 package references, match the assembly process. The 60 dB PSRR is specified at 100 kHz, so evaluate noise rejection at that frequency rather than assuming behavior at other frequencies. The 4.5 µA quiescent current and 5.5 µA maximum supply current are relevant for low-current control circuits, while over-current and reverse-polarity protection provide safeguards within the device's electrical limits.