Texas Instruments TLV741285PDBVR

Overview

TLV741285PDBVR from Texas Instruments is a 150-mA, low-dropout linear regulator (LDO) with fixed 2.85-V output, 1% accuracy, 230 mV dropout at 150 mA, and active output discharge. It operates from 1.4 V to 5.5 V input and delivers stable regulation for battery-powered microcontrollers and portable RF systems.

For engineers reviewing the TLV741285PDBVR datasheet, TLV741285PDBVR pinout, TLV741285PDBVR application, or TLV741285PDBVR equivalent, key selection criteria include foldback current limiting, 50 µA quiescent current, 65 dB PSRR at 1 kHz, thermal shutdown at 158°C, and compatibility with 1-µF ceramic output capacitors.

Technical Context

The TLV741285PDBVR uses a PMOS pass transistor enabling ultra-low dropout and inherent reverse-voltage protection via its body diode. Its internal UVLO disables output below ~1.4 V input, while an active pulldown circuit (120 Ω) discharges the output during shutdown.

It implements foldback current limiting-reducing output current as VOUT collapses-and cycles between current limit and thermal shutdown (158°C trip, 140°C reset) under sustained overload, protecting both IC and system.

Key Specifications

Pinout & Package

TLV741285PDBVR is packaged in a 5-pin SOT-23 (DBV) with 2.90 mm × 1.60 mm body size and exposed thermal pad electrically tied to GND. The package supports high thermal performance (R_θJB = 76.7°C/W) when soldered to a PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TLC741285PDBVR and TPS741285PDBVR, TLV741285PDBVR uniquely combines SOT-23-5 pin compatibility, active discharge, and 150-mA capability - making it optimal for space-constrained, fast-sequencing portable systems.

Availability

TLV741285PDBVR is available at Aetrix Electronics and suitable for wearable electronics, industrial sensor nodes, and portable diagnostic tools requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TLV741285PDBVR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The TLV741P series was designed specifically for ultra-low-power, space-constrained portable applications - emphasizing low IQ, small-footprint packaging, and robust protection features like foldback current limiting and active discharge.

FAQ

What is the output voltage tolerance of TLV741285PDBVR over temperature?

The TLV741285PDBVR has a DC output accuracy of ±1% over the full operating junction temperature range of –40°C to +125°C for output voltages ≥1.8 V. At 2.85 V, this corresponds to a guaranteed output range of 2.8215 V to 2.8785 V under all specified conditions, ensuring reliable operation for precision analog and digital loads.

Does TLV741285PDBVR require an input capacitor?

An input capacitor is not required for stability of TLV741285PDBVR, but TI recommends a 0.1–1 µF ceramic capacitor from IN to GND to improve transient response, reduce input ripple, and enhance PSRR - especially when the input source impedance exceeds 0.5 Ω or the device is located remotely from the power source.

How does the foldback current limit behave in TLV741285PDBVR during a short circuit?

During output short-circuit, TLV741285PDBVR reduces output current to ~40 mA (typical) while VOUT collapses - limiting power dissipation in the PMOS pass element. This foldback behavior prevents thermal runaway and allows the device to cycle safely between current limit and thermal shutdown (158°C trip) until the fault is cleared.

Can TLV741285PDBVR operate from a 2.5-V input?

No - TLV741285PDBVR requires minimum input voltage of 1.4 V, but to regulate 2.85 V output, VIN must exceed VOUT + VDO. With 230 mV dropout at 150 mA, minimum functional input is ~3.08 V. At 2.5 V input, the device enters dropout mode and cannot maintain regulation - output drops to ~2.27 V.

Is the NC pin on TLV741285PDBVR electrically connected internally?

No - Pin 4 (NC) of TLV741285PDBVR is a no-connect terminal with no internal bond wire or circuit connection. It must remain unconnected on the PCB; neither routing nor copper pour should contact this pad to avoid mechanical stress or unintended coupling.