Texas Instruments TPS7A0525PDBVR

Overview

TPS7A0525PDBVR from Texas Instruments is a 200-mA, ultralow-quiescent-current (1 µA typ) low-dropout regulator with fixed 2.5-V output, 1% typical accuracy, and 235 mV max dropout at full load-designed for battery-powered wearables, always-on subsystems, and portable electronics requiring extended runtime.

For engineers reviewing the TPS7A0525PDBVR datasheet, TPS7A0525PDBVR pinout, TPS7A0525PDBVR application, or TPS7A0525PDBVR equivalent, key selection criteria include its 1.4–5.5 V input range, active output discharge, foldback current limit, stability with ≥0.47-µF ceramic capacitors, and operation across –40°C to +125°C junction temperature.

Technical Context

The TPS7A0525PDBVR implements a PMOS pass transistor architecture enabling ultra-low IQ and fast transient response without external compensation. Its enable-controlled shutdown reduces leakage to 100 nA, while integrated UVLO (1.21–1.37 V threshold) prevents operation below minimum input voltage.

Thermal performance is managed via internal thermal shutdown (160°C trip, 140°C reset) and package-specific R_θJA values-144.1°C/W for the X2SON package-supporting reliable operation in compact, thermally constrained PCB layouts.

Key Specifications

Pinout & Package

The TPS7A0525PDBVR is housed in a 1.0-mm × 1.0-mm, 4-pin X2SON (DQN) package with wettable flanks for automated optical inspection. Thermal pad must be connected to a large-area ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-quiescent-current LDO applications.

Compared with TPS7A0525PDBVR, the PDQNR variant offers identical performance in an alternate packaging format, while the MCP1700T-2502E/TT trades enable control and lower dropout for simpler integration where system-level enable sequencing is handled externally.

Availability

TPS7A0525PDBVR is available at Aetrix Electronics and suitable for wearable electronics, always-on sensor nodes, and smart remote controls requiring stable component supply with guaranteed long-term manufacturability.

Supply support for TPS7A0525PDBVR 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TPS7A05 product line delivers ultralow-I_Q LDOs optimized for battery longevity in space- and power-constrained portable and IoT applications, with emphasis on minimal external components and robust thermal behavior.

FAQ

What is the maximum input voltage rating for the TPS7A0525PDBVR?

The TPS7A0525PDBVR has an absolute maximum input voltage rating of 6.0 V. However, its recommended operating input voltage range is 1.4 V to 5.5 V. Exceeding 5.5 V may compromise long-term reliability or trigger overvoltage protection mechanisms not explicitly specified in the datasheet. Always maintain VIN within the recommended range for guaranteed parametric performance across temperature.

Does the TPS7A0525PDBVR require an external pull-up resistor on the EN pin?

No, the TPS7A0525PDBVR 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 IN per the datasheet. The device draws only 10 nA into EN at 5.5 V, so no additional biasing is necessary. External pull-ups would unnecessarily increase system IQ and are not recommended.

Can the TPS7A0525PDBVR operate with a 0.22-µF output capacitor?

No, the TPS7A0525PDBVR requires a minimum 0.47-µF ceramic output capacitor for stability. Using a 0.22-µF capacitor violates the stability condition and may cause oscillation or poor transient response. The datasheet specifies 0.47 µF as the absolute minimum value-lower values are not characterized or guaranteed, and design margins must be preserved for production reliability.

What is the thermal shutdown behavior of the TPS7A0525PDBVR?

The TPS7A0525PDBVR activates thermal shutdown at 160°C junction temperature and resets at 140°C. During shutdown, the pass element turns off and the output discharges via the internal 120-Ω pulldown resistor. This hysteresis prevents rapid cycling near the trip point. Recovery requires both temperature drop below 140°C and valid EN and VIN conditions before regulation resumes.

Is the TPS7A0525PDBVR pin-compatible with other TPS7A05 variants like TPS7A0533PDBVR?

Yes, the TPS7A0525PDBVR is pin-compatible with all TPS7A05 variants in the X2SON-4 (DQN) package-including TPS7A0533PDBVR-because they share identical pinout (IN, EN, GND, OUT), package dimensions (1.0 mm × 1.0 mm), and thermal pad configuration. Only the output voltage differs; no PCB redesign is needed when swapping fixed-output versions within this package family.