TLV74128PDBVR

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The TLV74128PDBVR is a fixed-output linear low-dropout (LDO) voltage regulator manufactured by Texas Instruments. It provides a fixed output voltage of 2.8 V with a maximum continuous output current of 150 mA. The device operates within an input voltage range of 1.4 V to 5.5 V and features a typical dropout voltage of 230 mV at full load. Quiescent current is specified at 50 µA, with a maximum supply current of 75 µA. Power supply rejection ratio (PSRR) ranges from 70 dB at 100 Hz to 55 dB at 1 MHz. The component supports operation across a junction temperature range of -40°C to +125°C and is housed in a SOT-23-5 surface-mount package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Integrated foldback current limiting and thermal shutdown protection for enhanced reliability under fault conditions
• Low quiescent current consumption optimized for battery-powered portable applications
• High power supply rejection ratio effective across audio frequency and radio frequency bands

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Portable electronic devices requiring stable 2.8 V logic levels
• Battery-operated systems utilizing single-cell alkaline or lithium-ion power sources
• Embedded microcontroller peripheral power regulation

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the complete part number against official Texas Instruments documentation to ensure correct suffix alignment. Confirm that the SOT-23-5 package variant matches specific board layout requirements. Cross-reference RoHS compliance status and moisture sensitivity level ratings prior to procurement integration. Ensure ordering specifications align with current manufacturing revisions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 2.8 V rail is required with moderate current demands up to 150 mA. Evaluate thermal performance based on the expected voltage drop and ambient operating conditions. Consider the SOT-23-5 footprint constraints during PCB layout planning. Verify input voltage stability remains within the 1.4 V to 5.5 V operational window for consistent regulation.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This device belongs to the TLV741P family of low-dropout regulators designed for space-constrained portable electronics. The family shares common architectural features including low noise and high PSRR. The PDBVR suffix specifically denotes the SOT-23-5 surface-mount package configuration used for compact assembly.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Consult official substitution guides for equivalent LDOs with matching 2.8 V output and 150 mA capability. Verify pin compatibility and thermal characteristics before replacing existing designs.