Texas Instruments TPS7A0510PDBVR

Overview

TPS7A0510PDBVR from Texas Instruments is an ultralow-quiescent-current (1 µA typ) 200-mA low-dropout regulator in a 1.0-mm × 1.0-mm X2SON-4 package, delivering fixed 1.0-V output with ±1% typical accuracy and 235 mV max dropout at 200 mA - optimized for battery-powered wearables and always-on subsystems.

For engineers reviewing the TPS7A0510PDBVR datasheet, TPS7A0510PDBVR pinout, TPS7A0510PDBVR application, or TPS7A0510PDBVR equivalent, key selection criteria include ultralow IQ operation across –40°C to +125°C, active output discharge, foldback current limiting, and stability with ≥0.47-µF ceramic output capacitance.

Technical Context

The TPS7A0510PDBVR implements a PMOS pass transistor architecture enabling ultra-low ground current across load range (0.6–1.3 µA at 1 µA I_OUT; 6 µA typ at 200 mA), with integrated enable logic and internal pulldown resistor (120 Ω) for rapid output discharge during disable. Its UVLO threshold (1.21–1.37 V) ensures reliable startup from single-cell Li-ion or alkaline sources.

Thermal design leverages the X2SON-4 package's 144.1°C/W junction-to-ambient resistance and bottom-side thermal pad connection to PCB ground plane. The device operates fully specified over –40°C to +125°C junction temperature, supporting industrial and automotive cabin applications requiring high reliability under wide input voltage (1.4–5.5 V) and load transients.

Key Specifications

Pinout & Package

TPS7A0510PDBVR uses the 1.0-mm × 1.0-mm, 4-pin X2SON (DQN) package with wettable flank leads and exposed thermal pad. The package requires solder paste stencil design per TI SNOA971 and board-level thermal relief to maximize heat dissipation via the bottom thermal pad connected to a large-area ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A0510PDBVR, the TPS7A0512PDBVR offers identical performance at 1.2 V but cannot substitute in 1.0-V systems, while the MCP1700T-1002E/TT trades off active discharge and package size for broader vendor availability - making TPS7A0510PDBVR optimal for space-constrained, fast-discharge-critical designs.

Availability

TPS7A0510PDBVR is available at Aetrix Electronics and suitable for wearable electronics, always-on power supplies, and portable medical devices requiring stable component supply with guaranteed long-term manufacturability and traceable sourcing.

Supply support for TPS7A0510PDBVR 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 headquartered in Dallas, Texas, designing and manufacturing analog and embedded processing chips for industrial, automotive, and consumer markets.

The TPS7A05 family was engineered specifically for ultra-low-power, space-constrained battery-operated systems - emphasizing sub-µA quiescent current, miniature packaging, and robust transient response in harsh thermal environments.

FAQ

What is the maximum dropout voltage of the TPS7A0510PDBVR at full 200-mA load?

The TPS7A0510PDBVR has a maximum dropout voltage of 235 mV at 200 mA output current and V_OUT = 3.3 V, measured across –40°C to +85°C junction temperature. For its configured 1.0-V output, the max dropout is 915 mV at 200 mA (–40°C to +85°C). This value defines the minimum headroom required between input and output to maintain regulation.

Does the TPS7A0510PDBVR support active output discharge, and how does it function?

Yes, the TPS7A0510PDBVR integrates an active pulldown circuit with a nominal 120-Ω resistor between OUT and GND. When the EN pin is driven low, this circuit rapidly discharges the output capacitor, bringing V_OUT below 100 mV within 1 ms - preventing back-powering of downstream circuitry and ensuring clean power sequencing in multi-rail systems.

Can the TPS7A0510PDBVR operate from a single 1.5-V alkaline cell throughout its discharge curve?

Yes - the TPS7A0510PDBVR supports input voltages as low as 1.4 V, enabling operation from a fresh 1.5-V alkaline cell (1.5–1.6 V) down to near end-of-life (~1.4 V). Its 915-mV dropout at 200 mA for 1.0-V output means it maintains regulation until the cell drops below ~1.915 V, maximizing usable energy extraction.

What is the recommended output capacitor for stability with the TPS7A0510PDBVR?

The TPS7A0510PDBVR is stable with a minimum 0.47-µF ceramic capacitor (X5R/X7R) placed directly between OUT and GND. TI recommends using 1 µF for improved transient response. The capacitor must be located within 3 mm of the OUT and GND pins, with low-inductance layout to minimize impedance in the feedback loop.

How does the TPS7A0510PDBVR handle thermal overload conditions?

The TPS7A0510PDBVR incorporates thermal shutdown protection that activates at 160°C junction temperature (rising) and resets at 140°C (falling). During shutdown, the pass transistor turns off and the EN pin remains functional - allowing recovery once temperature falls below the hysteresis threshold. This protects against sustained overloads in compact enclosures or high ambient temperatures.