Texas Instruments TLV75525PDRVR

Overview

TLV75525PDRVR from Texas Instruments is a 2.5V fixed-output, 500mA low-dropout linear regulator (LDO) in a thermally enhanced SOT-23-5 (DYD) package. It operates from 1.45V to 5.5V input, delivers ±1% output accuracy at 85°C, features 25μA typical quiescent current, and maintains regulation with only 1µF ceramic output capacitance - ideal for space-constrained battery-powered MCU core supplies.

For engineers reviewing the TLV75525PDRVR datasheet, TLV75525PDRVR pinout, TLV75525PDRVR application, or TLV75525PDRVR equivalent, key selection criteria include dropout voltage at full load (≤238mV @ 500mA, 3.3VOUT), active output discharge, foldback current limiting, and thermal pad–enabled thermal resistance (60.3°C/W R_θJA on EVM).

Technical Context

The TLV75525PDRVR uses a PMOS pass transistor architecture enabling ultra-low dropout and high PSRR (46dB @ 100kHz). Its internal bandgap reference and error amplifier deliver 1% output accuracy across –40°C to +85°C, while integrated UVLO (1.21–1.44V threshold) and thermal shutdown (165°C trip) ensure robust system-level protection.

Functional modes include normal regulation, dropout tracking, and active-shutdown with pulldown (120Ω internal resistor). Soft-start ensures monotonic V_OUT rise, and foldback current limiting reduces thermal stress during short-circuit events without requiring external components.

Key Specifications

Pinout & Package

SOT-23-5 package with exposed thermal pad (DYD variant); 2.9mm × 2.8mm footprint; thermal pad internally connected to GND and must be soldered to a large-area ground plane for optimal thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC75525DBVR and TPS7A2025PDQNR, TLV75525PDRVR uniquely combines 500mA capability, active discharge, and thermally enhanced DYD packaging - making it the only option among the three rated for continuous full-load operation in compact industrial or portable enclosures.

Availability

TLV75525PDRVR is available at Aetrix Electronics and suitable for portable MCU power, IoT sensor node supply, industrial HMI display, white goods control board, and battery-backed memory retention requiring stable component supply and long-term manufacturability.

Supply support for TLV75525PDRVR 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 specializing in analog, embedded processing, and power management technologies, with decades of LDO design expertise and broad automotive/industrial qualification.

The TLV755P family was engineered for ultra-small, low-I_Q power delivery in space- and energy-constrained applications - targeting modern MCUs, wearables, and smart sensors needing reliable, low-noise, fixed-voltage regulation.

FAQ

What is the maximum input voltage for TLV75525PDRVR?

The absolute maximum input voltage for TLV75525PDRVR is 6.0V, but the recommended operating range is 1.45V to 5.5V. Operation above 5.5V risks permanent damage, while operation below 1.45V may prevent regulation due to insufficient headroom relative to the 2.5V output and dropout voltage. Always maintain VIN ≥ VOUT + VDO for stable regulation.

Does TLV75525PDRVR require an input capacitor?

Yes, TLV75525PDRVR requires a minimum 1µF ceramic capacitor from IN to GND. This capacitor stabilizes the input rail during load transients and reduces high-frequency noise coupling. TI recommends X5R or X7R dielectrics for minimal capacitance shift over temperature and DC bias - critical for maintaining regulation under varying conditions.

How does the active output discharge function in TLV75525PDRVR?

When TLV75525PDRVR is disabled (EN < 0.3V), an internal 120Ω switch connects OUT to GND, actively discharging the output capacitor. This ensures a defined low state at startup and prevents floating or unintended logic states in downstream circuitry. Discharge time depends on C_OUT and parallel load resistance, per τ = (120·R_L)/(120+R_L)·C_OUT.

Can TLV75525PDRVR operate with a 0.47µF output capacitor?

No - TLV75525PDRVR is only guaranteed stable with ≥1µF ceramic output capacitance. While 0.47µF may appear functional in some bench tests, TI's characterization and production validation confirm stability margins require ≥1µF. Using smaller values risks oscillation, poor transient response, or startup failure - especially under temperature or load variation.

What is the thermal pad connection requirement for TLV75525PDRVR?

The thermal pad on TLV75525PDRVR (DYD package) is internally connected to GND and must be soldered to a dedicated, low-impedance PCB ground plane using multiple thermal vias. Failure to connect the pad degrades thermal performance significantly - raising R_θJA from 60.3°C/W to ~92.5°C/W (JEDEC standard) and risking thermal shutdown at full 500mA load.