Texas Instruments TPS7A0222PDQNR

Overview

TPS7A0222PDQNR from Texas Instruments is an ultra-low-quiescent-current LDO voltage regulator delivering 200 mA output with 25 nA typical IQ, 1.5% output accuracy over –40°C to +125°C, and 270 mV max dropout at 200 mA (VOUT = 3.3 V). It operates from 1.5 V to 6.0 V input and provides fixed 2.2 V output in a 1.0-mm × 1.0-mm X2SON-4 package, targeting battery-powered IoT sensors and medical wearables.

For engineers reviewing the TPS7A0222PDQNR datasheet, TPS7A0222PDQNR pinout, TPS7A0222PDQNR application, or TPS7A0222PDQNR equivalent, key selection criteria include nanoscale quiescent current in dropout, fast transient response (<10 µs settling), smart enable pulldown behavior, thermal shutdown threshold (170°C), and compatibility with 1-µF ceramic output capacitors.

Technical Context

The TPS7A0222PDQNR implements a PMOS pass transistor architecture enabling ultra-low IQ operation across full input range and dropout conditions. Its internal smart enable circuit integrates a temperature-stable 500-kΩ pulldown resistor that ensures reliable disable state when EN floats, eliminating external pull-down components.

Transient performance is optimized via high-gain error amplifier and low-output-impedance design, achieving <10-µs settling time and ≤100-mV undershoot during 1–50 mA load steps. Stability is guaranteed with ≥1-µF ceramic output capacitance and no ESR requirements.

Key Specifications

Pinout & Package

TPS7A0222PDQNR is housed in a 1.0-mm × 1.0-mm, 4-pin X2SON (DQN) package with wettable flanks and exposed thermal pad connected internally to GND. The compact footprint supports high-density wearable PCB layouts while enabling efficient heat dissipation through the thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A0222PDQNR, TPS7A0322PDQNR offers identical nanopower performance but reduced current capability and adjustable output, while MCP1703T-2202E/MB trades 100× higher IQ for broader availability and simpler qualification - making TPS7A0222PDQNR optimal for multi-year battery life-critical designs.

Availability

TPS7A0222PDQNR is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, and residential circuit breakers requiring stable component supply with guaranteed long-term manufacturability and automotive-grade reliability.

Supply support for TPS7A0222PDQNR 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, specializing in analog and embedded processing technologies with leadership in power management ICs.

The TPS7A02 family was engineered specifically for ultra-low-power, battery-operated applications demanding nanoscale quiescent current without sacrificing transient performance or thermal robustness.

FAQ

What is the output voltage of the TPS7A0222PDQNR?

The TPS7A0222PDQNR provides a fixed 2.2 V output voltage. This value is factory-trimmed and specified with ±1.5% accuracy over the full operating temperature range of –40°C to +125°C, ensuring stable power delivery to precision analog circuits and low-voltage microcontrollers without external feedback components.

Does the TPS7A0222PDQNR require an external pull-down resistor on the EN pin?

No, the TPS7A0222PDQNR features an integrated smart enable pulldown resistor of 500 kΩ on the EN pin. This internal circuit ensures the device remains disabled when EN is left floating, eliminating the need for external components and reducing BOM count and PCB area in space-constrained designs.

What is the minimum output capacitance required for stability with the TPS7A0222PDQNR?

The TPS7A0222PDQNR is stable with a minimum 1-µF ceramic output capacitor. Unlike many LDOs, it imposes no ESR requirements, allowing use of low-ESR X5R/X7R MLCCs. For optimal transient response, TI recommends using ≥1 µF placed as close as possible to the OUT and GND pins.

Can the TPS7A0222PDQNR operate in dropout mode while maintaining ultra-low quiescent current?

Yes, the TPS7A0222PDQNR maintains its 25-nA typical quiescent current even when operating in dropout - i.e., when VIN falls below VOUT + VDO. This behavior is explicitly characterized in Figures 6-7 and 6-8 of the datasheet and is critical for extending battery life in applications where input voltage decays near end-of-life.

What thermal protection features does the TPS7A0222PDQNR include?

The TPS7A0222PDQNR incorporates thermal shutdown protection that activates at 170°C junction temperature and resets at 145°C, providing 25°C hysteresis. This safeguard prevents permanent damage during sustained overload or inadequate PCB heatsinking, and is fully specified across the –40°C to +125°C operating range.