Texas Instruments TPS7A0525PDBVT

Overview

TPS7A0525PDBVT from Texas Instruments is a 2.5-V fixed-output, ultralow-quiescent-current (1 µA typ) low-dropout regulator capable of sourcing 200 mA with 235 mV max dropout at full load and ±1% output accuracy over temperature. It operates from 1.4 V to 5.5 V input and features active output discharge, foldback current limiting, and stability with ≥0.47-µF ceramic output capacitance - ideal for battery-powered wearables and always-on subsystems.

For engineers reviewing the TPS7A0525PDBVT datasheet, TPS7A0525PDBVT pinout, TPS7A0525PDBVT application, or TPS7A0525PDBVT equivalent, key selection considerations include its 1-µA IQ performance at light load, thermal shutdown (160°C), UVLO (1.21–1.37 V), EN pin logic thresholds (VEN(HI) = 0.9 V, VEN(LO) = 0.4 V), and compatibility with compact 1.0-mm × 1.0-mm X2SON packaging.

Technical Context

The TPS7A0525PDBVT employs a PMOS pass transistor architecture enabling ultra-low quiescent current and near-zero dropout behavior at microamp loads. Its internal reference and error amplifier deliver tight regulation across –40°C to +125°C junction temperature, with line regulation ≤16.5 mV and load regulation ≤43 mV (DBV/DQN/YKA packages) under full 200-mA load variation.

It integrates an active pulldown circuit on the OUT pin for rapid discharge during disable, supports fast transient response via optimized internal compensation, and includes foldback current limiting and thermal shutdown for robust fault protection - all without requiring external components beyond input/output capacitors.

Key Specifications

Pinout & Package

TPS7A0525PDBVT is packaged in a 1.0-mm × 1.0-mm, 4-pin X2SON (DQN) package with wettable flank terminations for automated optical inspection. The package has no exposed thermal pad; the die attach paddle is electrically isolated and must not be connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TNPS7A0525PDQNR and MCP1700T-2502E/TT, the TPS7A0525PDBVT offers superior thermal resistance (144.1°C/W vs 198.0°C/W), integrated active discharge, and tighter ±1% accuracy - making it optimal for space-constrained, battery-critical, and power-sequencing-sensitive designs.

Availability

TPS7A0525PDBVT is available at Aetrix Electronics and suitable for wearable electronics, always-on subsystems, and portable medical devices requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TPS7A0525PDBVT 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 company specializing in analog, embedded processing, and digital signal processing technologies with over 50 years of power management innovation.

The TPS7A05 product line delivers ultralow-IQ LDOs for battery-constrained applications, emphasizing extended runtime, small-footprint integration, and robust operation across automotive, industrial, and portable consumer environments.

FAQ

What is the maximum input voltage rating for the TPS7A0525PDBVT?

The TPS7A0525PDBVT has an absolute maximum input voltage rating of 6.0 V. Operation beyond this may cause permanent damage. For reliable continuous operation, the recommended input range is 1.4 V to 5.5 V - supporting common battery chemistries including Li-ion, Li-MnO₂, and two- or three-cell alkaline sources. The TPS7A0525PDBVT includes built-in UVLO to prevent operation below 1.21 V.

Does the TPS7A0525PDBVT require an external pull-up resistor on the EN pin?

No, the TPS7A0525PDBVT does not require an external pull-up resistor on the EN pin. When enable functionality is not needed, the EN pin must be directly connected to the IN pin per datasheet guidance. The EN pin draws only 10 nA at 5.5 V, enabling direct drive from low-power GPIOs without loading concerns. The TPS7A0525PDBVT's VEN(HI) threshold is 0.9 V, ensuring compatibility with 1.8-V logic systems.

Can the TPS7A0525PDBVT operate with a 0.47-µF output capacitor?

Yes, the TPS7A0525PDBVT is explicitly specified to be stable with a minimum 0.47-µF ceramic output capacitor (X7R or better). This value is validated across temperature and load conditions, enabling use of compact 0402- or 0603-sized MLCCs. Larger values (up to 22 µF) are also supported and improve transient response. The TPS7A0525PDBVT does not require ESR tuning or additional series resistance.

What is the thermal shutdown behavior of the TPS7A0525PDBVT?

The TPS7A0525PDBVT activates thermal shutdown at a junction temperature of 160°C and resets automatically when temperature falls to 140°C. This hysteresis prevents cycling near the trip point. During shutdown, the pass element turns off and the output is discharged via the integrated 120-Ω pulldown resistor. The TPS7A0525PDBVT's RθJA of 144.1°C/W (X2SON package) means 200-mA operation at 25°C ambient yields ~72°C junction rise - well below shutdown threshold under typical PCB layouts.

Is the TPS7A0525PDBVT pin-compatible with other TPS7A05 variants?

Yes, all TPS7A05 variants in the X2SON (DQN) package - including TPS7A0525PDBVT - share identical 4-pin pinout (IN, EN, GND, OUT), footprint, and thermal pad configuration. This allows drop-in replacement across output voltages (0.8 V to 3.3 V) without PCB redesign. However, voltage-specific variants differ in internal feedback network and cannot be substituted without verifying system-level voltage tolerance and load requirements.