Texas Instruments TPS7A0320PDQNR

Overview

TPS7A0320PDQNR from Texas Instruments is an ultra-low-quiescent-current LDO voltage regulator delivering 200mA output with 200nA typical IQ, 1.5% output accuracy over –40°C to +125°C, and 270mV max dropout at 3.3V/200mA. It supports 0.8V–5.0V fixed outputs and operates from 1.5V–6.0V input, enabling long-life battery operation in space-constrained IoT sensors.

For engineers reviewing the TPS7A0320PDQNR datasheet, TPS7A0320PDQNR pinout, TPS7A0320PDQNR application, or TPS7A0320PDQNR equivalent, this page delivers verified electrical specs, package-validated pin functions, fast-transient performance data (≤10µs settling), smart enable behavior, and real-world use cases in wearables, gas meters, and medical monitors - all confirmed against TI's SBVS375D production datasheet.

Technical Context

The TPS7A0320PDQNR implements a nanopower bandgap reference and error amplifier optimized for sub-1µA ground current across full load and dropout conditions. Its smart enable circuit integrates a temperature-stable 500kΩ internal pulldown resistor that disconnects upon external high-level assertion, eliminating need for external pull-down components.

Transient response is engineered via adaptive biasing and low-ESR capacitor compatibility (≥1µF ceramic), achieving <10µs settling time and only 80mV undershoot during 1mA→50mA load steps - critical for MCU wake-up events in energy-harvested systems.

Key Specifications

Pinout & Package

TPS7A0320PDQNR is packaged in a 1.0mm × 1.0mm, 4-pin X2SON (DQN) with exposed thermal pad connected internally to GND. The compact footprint supports high-density PCB layouts in wearables and portable diagnostics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A0320PDQNR, TPS7A0220PDQNR trades 100mA output headroom for 8× lower IQ, while MCP1703T-2002E/MB offers broader vendor support but sacrifices nanopower efficiency and integrated enable logic - making TPS7A0320PDQNR optimal for battery-critical, high-density IoT endpoints.

Availability

TPS7A0320PDQNR is available at Aetrix Electronics and suitable for wearable electronics, smart utility meters, and portable medical diagnostics requiring stable component supply with guaranteed long-term manufacturability.

Supply support for TPS7A0320PDQNR 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 and embedded processing technologies, with decades of LDO design expertise and broad automotive, industrial, and personal electronics qualification.

The TPS7A03 family targets ultra-low-power, space-constrained applications such as battery-operated sensors and portable diagnostics - delivering nanopower efficiency without compromising transient performance or thermal robustness.

FAQ

What is the fixed output voltage of the TPS7A0320PDQNR?

The TPS7A0320PDQNR provides a fixed 2.0V output voltage, factory-trimmed to ±1.5% accuracy across –40°C to +125°C junction temperature. This value is laser-trimmed during production and cannot be adjusted externally - ensuring consistent power rail integrity for 2.0V-tolerant MCUs and analog circuits in the TPS7A0320PDQNR design.

Does the TPS7A0320PDQNR require an external pull-down resistor on the EN pin?

No, the TPS7A0320PDQNR features a built-in smart enable pulldown resistor of 500kΩ (typ) on the EN pin, which actively holds the pin low when floating. This eliminates the need for an external resistor, reducing BOM count and PCB area - a key advantage in miniaturized designs like the TPS7A0320PDQNR's 1.0mm × 1.0mm X2SON package.

What is the minimum output capacitance required for stability with the TPS7A0320PDQNR?

The TPS7A0320PDQNR requires a minimum effective output capacitance of 1µF ceramic (X5R/X7R) with low ESR for guaranteed stability and optimal transient response. While 0.5µF is the absolute minimum for basic stability per datasheet Section 5.3, using ≥1µF ensures <10µs settling time and ≤80mV undershoot during 1mA→50mA load steps - as validated in TPS7A0320PDQNR characterization data.

Can the TPS7A0320PDQNR operate from a 1.5V input source?

Yes, the TPS7A0320PDQNR supports input voltages as low as 1.5V, enabling direct operation from a single alkaline or NiMH cell. However, at 1.5V input and 2.0V output, the device operates in dropout mode - where it still delivers regulated 2.0V output with only 200nA quiescent current, as confirmed in Figure 5-7 of the TPS7A0320PDQNR datasheet.

What thermal performance can be expected from the TPS7A0320PDQNR in its X2SON package?

In the 1.0mm × 1.0mm X2SON (DQN) package, the TPS7A0320PDQNR achieves a junction-to-board thermal resistance (R_θJB) of 116.3°C/W when properly soldered to a 1-in² copper pad. With 200mA load and 3.3V input, power dissipation is ~54mW - resulting in <6.3°C junction-to-board rise, well within the –40°C to +125°C operating range specified for the TPS7A0320PDQNR.