Texas Instruments TPS7A0525PYKAR

Overview

TPS7A0525PYKAR from Texas Instruments is a 2.5-V fixed-output, ultralow-quiescent-current LDO regulator in a 0.65-mm × 0.65-mm 4-pin DSBGA (YKA) package, delivering up to 200 mA with 1% typical output accuracy, 235 mV max dropout at full load, and 1 µA typical ground current - optimized for battery-powered wearables and always-on subsystems.

For engineers reviewing the TPS7A0525PYKAR datasheet, TPS7A0525PYKAR pinout, TPS7A0525PYKAR application, or TPS7A0525PYKAR equivalent, key selection criteria include its 1.4–5.5 V input range, active output discharge, foldback current limiting, stability with ≥0.47-µF ceramic output capacitance, and operation across –40°C to +125°C junction temperature.

Technical Context

The TPS7A0525PYKAR implements a PMOS pass transistor architecture enabling ultralow IQ and fast transient response without requiring external compensation. Its enable-controlled shutdown reduces leakage to ≤300 nA, while integrated UVLO (1.21–1.37 V threshold) prevents operation below minimum input voltage.

Internal foldback current limiting protects against short-circuit faults, and the active pulldown circuit discharges the output within microseconds when disabled - critical for sequencing-sensitive systems. Thermal shutdown activates at 160°C with 20°C hysteresis.

Key Specifications

Pinout & Package

The TPS7A0525PYKAR uses a 0.65-mm × 0.65-mm, 4-ball DSBGA (YKA) package with 0.35-mm pitch. The bottom-side thermal pad is electrically isolated and must be connected to a large-area ground plane for thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A0525PDBVR and MCP1700T-2502E/MB, the TPS7A0525PYKAR provides the smallest footprint (0.42 mm²), lowest thermal resistance in DSBGA (198°C/W), and unique active output discharge - making it optimal for miniaturized, sequenced, and battery-critical systems.

Availability

TPS7A0525PYKAR is available at Aetrix Electronics and suitable for wearable electronics, always-on power supplies, and portable medical devices requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.

Supply support for TPS7A0525PYKAR 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 designing analog ICs, embedded processors, and digital signal processors for industrial, automotive, and consumer applications.

The TPS7A05 family delivers ultralow-IQ LDOs targeting battery-powered edge devices where multi-year operation, small form factor, and precise voltage regulation are essential design requirements.

FAQ

What is the maximum output current of the TPS7A0525PYKAR?

The TPS7A0525PYKAR delivers up to 200 mA of continuous output current across –40°C to +125°C junction temperature. This rating is maintained under worst-case conditions including minimum input voltage (1.4 V), maximum dropout (235 mV at 200 mA for 2.5 VOUT), and full thermal load - verified per TI's Electrical Characteristics table in SBVS254D Rev D.

Does the TPS7A0525PYKAR require an external pull-up on the EN pin?

No, the TPS7A0525PYKAR does not require an external pull-up on the EN pin. When enable functionality is not needed, EN must be connected directly to IN per TI's Pin Functions table. The EN pin draws only 10 nA at 5.5 V, so no external bias is necessary - simplifying always-on designs and reducing component count.

Can the TPS7A0525PYKAR operate from a single-cell Li-MnO₂ battery?

Yes, the TPS7A0525PYKAR can operate from a single-cell Li-MnO₂ battery. With a nominal voltage of 3.0 V and end-of-life voltage typically ≥2.0 V, the device's 1.4–5.5 V input range and 235-mV dropout at 200 mA ensure regulation down to ~2.735 V input - well above the battery's cutoff, supporting full usable capacity.

What is the purpose of the active output discharge feature in the TPS7A0525PYKAR?

The active output discharge feature in the TPS7A0525PYKAR uses an internal 120-Ω pulldown resistor to rapidly discharge the OUT pin to GND when EN is deasserted. This prevents floating voltages that could cause unintended behavior in downstream logic or analog circuits - critical for clean power sequencing in multi-rail systems and meeting IEC 61000-4-2 ESD immunity requirements.

Is the TPS7A0525PYKAR stable with a 0.47-µF ceramic output capacitor?

Yes, the TPS7A0525PYKAR is explicitly characterized and guaranteed stable with a 0.47-µF or larger X7R/X5R ceramic output capacitor, as stated in the Features section and Recommended Operating Conditions table. No series resistance or additional components are required - enabling minimal BOM count and reduced PCB area versus traditional LDOs needing ≥2.2-µF capacitance.