Texas Instruments TPS7A0222DQNR

Overview

TPS7A0222DQNR 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 temperature, and 270 mV max dropout at 3.3 V output. It operates from 1.5 V to 6.0 V input and supports fixed 2.2 V output in a 1.0-mm × 1.0-mm X2SON package, targeting battery-powered wearables and medical sensors.

For engineers reviewing the TPS7A0222DQNR datasheet, TPS7A0222DQNR pinout, TPS7A0222DQNR application, or TPS7A0222DQNR equivalent, key selection criteria include nanopower shutdown current (3 nA), fast transient response (<10 µs settling), smart enable pulldown, and stability with ≥1-µF ceramic output capacitance.

Technical Context

The TPS7A0222DQNR implements a PMOS pass transistor architecture enabling ultra-low IQ operation even in dropout, with internal smart enable logic featuring a temperature-stable 500-kΩ pulldown resistor that ensures reliable disable state without external components. Its feedback loop is optimized for high PSRR (55 dB at 1 kHz) and low noise (130 µV_RMS).

Transient performance is engineered for rapid load steps: undershoot is limited to 100 mV during 1–50 mA transitions, and start-up time ranges from 500 µs (0.8–1.5 V output) to 1600 µs (3.0–5.0 V), with thermal shutdown set at 170°C and reset at 145°C.

Key Specifications

Pinout & Package

TPS7A0222DQNR is housed in a 1.0-mm × 1.0-mm, 4-pin X2SON (DQN) package with wettable flanks, optimized for automated optical inspection and high-density PCB layouts. The thermal pad is internally connected to GND and must be soldered to a large-area ground plane for thermal management.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A0222DQNR, TPS7A0322DQNR trades output current for identical nanopower performance in the same package, while MCP1703T-2202E/MB offers higher current but sacrifices 3-orders-of-magnitude higher quiescent current and lacks critical transient response specs.

Availability

TPS7A0222DQNR is available at Aetrix Electronics and suitable for wearable electronics, utility metering, and portable medical diagnostics requiring stable component supply with guaranteed long-term manufacturability.

Supply support for TPS7A0222DQNR 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, embedded processing, and connectivity technologies with over 90 years of innovation in power management ICs.

The TPS7A02 product line delivers nanopower LDOs designed specifically for energy-harvesting and battery-operated IoT endpoints where multi-year operational life and reliability under extreme temperature are mandatory.

FAQ

What is the output voltage of the TPS7A0222DQNR?

The TPS7A0222DQNR provides a fixed 2.2 V output voltage, factory-trimmed to ±1.5% accuracy over the full –40°C to +125°C junction temperature range. This precise output supports low-voltage microcontrollers and analog sensors without external feedback components.

Does the TPS7A0222DQNR require an external pull-down resistor on the EN pin?

No - the TPS7A0222DQNR features a smart enable circuit with an internal 500-kΩ pulldown resistor on the EN pin. This eliminates the need for an external resistor and ensures the device remains disabled when EN is left floating, reducing BOM count and PCB area.

What is the minimum output capacitance required for stability with the TPS7A0222DQNR?

The TPS7A0222DQNR is stable with a minimum 1-µF ceramic output capacitor. While 0.5 µF is the absolute minimum for basic stability, the 1-µF value is required to achieve the specified fast transient response (<10 µs settling) and maintain PSRR performance across frequency.

Can the TPS7A0222DQNR operate with a 1.5-V input supply?

Yes - the TPS7A0222DQNR supports input voltages from 1.5 V to 6.0 V. At 1.5 V input and 2.2 V output, it operates in dropout mode, maintaining regulation with only 25 nA quiescent current and delivering up to 200 mA with a maximum dropout voltage of 310 mV (at 125°C).

Is the TPS7A0222DQNR RoHS-compliant and lead-free?

Yes - the TPS7A0222DQNR is manufactured in accordance with RoHS Directive 2011/65/EU and is lead-free. The X2SON (DQN) package uses matte tin terminal finish and complies with JEDEC J-STD-020 moisture sensitivity level 2a (260°C reflow peak).