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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Texas Instruments TPS7A20225PDQNR

Name: TPS7A20225PDQNR
Brand: Texas Instruments
SKU: TPS7A20225PDQNR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS7A20225PDQNR

Manufacturer:: Texas Instruments

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 4-XDFN Exposed Pad

Datasheet:: TPS7A20225PDQNR.pdf

Description:: 300mA ultra-low-noise low-IQ low

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TPS7A20225PDQNR from Texas Instruments is a 300mA ultra-low-noise, low-I_Q, high-PSRR LDO regulator in a 1mm × 1mm X2SON-4 package, delivering 2.25V output with ±1.5% tolerance, 7µV_RMS noise (no bypass cap required), and 95dB PSRR at 1kHz-designed for RF power supply filtering in portable medical sensors and IP camera image signal processors.

For engineers reviewing the TPS7A20225PDQNR datasheet, TPS7A20225PDQNR pinout, TPS7A20225PDQNR application, or TPS7A20225PDQNR equivalent, key selection criteria include dropout voltage (140mV max at 300mA), smart enable pulldown (500kΩ internal), stability with 1µF ceramic output capacitor, and thermal performance (R_θJA = 166.1°C/W) in space-constrained designs.

Technical Context

The TPS7A20225PDQNR uses a precision bandgap reference and adaptive biasing to maintain ±1.5% output accuracy across –40°C to +125°C, load (1–300mA), and line (1.6–6.0V) variations. Its low-noise architecture eliminates need for external noise-bypass capacitors while sustaining 95dB PSRR at 1kHz under 300mA load.

It integrates an internal soft-start circuit limiting inrush current and features a smart enable input with 500kΩ pulldown resistor-ensuring default disable state when EN floats-and automatic VOUT discharge via 150Ω internal pulldown during shutdown.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	2.25V fixed; enables direct replacement of 2.2V/2.3V rails without external feedback network.
Max Output Current	300mA; supports moderate-power analog blocks like ADC drivers or RF front-end biasing.
Output Noise	7µV_RMS (10Hz–100kHz); meets stringent spectral purity requirements for GHz-range RF receivers.
PSRR	95dB at 1kHz; suppresses switching noise from upstream DC/DC converters feeding sensitive analog circuits.
Quiescent Current	6.5µA typical; extends battery life in always-on wearable health monitors and IoT edge nodes.
Dropout Voltage	140mV max at 300mA (V_OUT = 3.3V); allows operation from single-cell Li-ion (3.0V min) down to 2.39V under full load.
Input Voltage Range	1.6V to 6.0V; compatible with wide-input buck regulators and multi-cell battery stacks.

Pinout & Package

TPS7A20225PDQNR is housed in a 1mm × 1mm, 4-pin X2SON (DQN) package with wettable flank leads for automated optical inspection. Thermal pad (Pin 5) must be connected to GND for optimal thermal performance (R_θJB = 110.6°C/W).

Pin/Terminal	Circuit Role	Design Meaning
1 (OUT)	Regulated output	Delivers stable 2.25V; requires ≥1µF ceramic capacitor placed adjacent to pin for stability and transient response.
2 (GND)	Power ground	Common return path; must be tied directly to thermal pad and system ground plane to minimize impedance.
3 (EN)	Enable control input	Logic-high (>0.9V) enables regulation; internal 500kΩ pulldown holds OFF if left floating.
4 (IN)	Input supply	Accepts 1.6–6.0V; benefits from local 1µF ceramic capacitor to reduce source impedance and damp ringing.
5 (Thermal Pad)	Thermal conduction path	Exposed copper pad; must be soldered to GND plane for thermal relief-no electrical function beyond thermal management.

Key Features

Feature	Design Value
Noise-bypass capacitor elimination	7µV_RMS output noise achieved via on-die filtering-reduces BOM count and PCB area by one 10nF–100nF capacitor.
Smart enable pulldown	500kΩ internal EN pulldown ensures safe default-OFF state-removes need for external pull-down resistor in battery-critical systems.
Ultra-low quiescent current	6.5µA I_Q at 6V input enables >10-year shelf life in coin-cell-powered asset trackers.
Stability with minimal capacitance	Guaranteed stable with 1µF ceramic output capacitor-supports use of small 0201/0402 MLCCs in ultra-compact layouts.
Automatic output discharge	150Ω internal pulldown discharges VOUT within microseconds after EN deactivation-prevents back-powering of downstream logic.

Applications

Portable Medical Sensors	IP Network Cameras
Use Scenario: Powering low-noise analog front-ends in wearable ECG/PPG modules where EMI immunity and signal integrity are critical. IC Role / Device Role / Timing Role: Primary 2.25V bias rail for instrumentation amplifiers and 24-bit delta-sigma ADCs. Use Value: 7µV_RMS noise and 95dB PSRR prevent switching artifacts from corrupting sub-µV biological signals.	Use Scenario: Supplying image sensor analog core and ISP power domains in compact 4K surveillance cameras. IC Role / Device Role / Timing Role: Clean post-regulator for CIS analog supply (AVDD), decoupling noisy DC/DC outputs. Use Value: 140mV dropout enables efficient use of 3.3V intermediate rail; 1mm × 1mm footprint saves space near sensor die.
Smart Meters	Wearables
Use Scenario: Providing stable 2.25V reference for metrology ADCs and RF transceivers in ANSI C12.19-compliant utility meters. IC Role / Device Role / Timing Role: Precision voltage source for sigma-delta modulators and sub-GHz ISM-band radios. Use Value: ±1.5% output tolerance over temperature ensures metering accuracy compliance without calibration drift.	Use Scenario: Regulating power to MEMS motion sensors and Bluetooth LE SoCs in fitness bands with 10+ day battery life. IC Role / Device Role / Timing Role: Always-on LDO for RTC, sensor hub, and BLE radio sleep-mode supply. Use Value: 6.5µA I_Q minimizes standby drain; smart EN simplifies host MCU wake-up sequencing.

Portable Medical Sensors

IP Network Cameras

Use Scenario: Powering low-noise analog front-ends in wearable ECG/PPG modules where EMI immunity and signal integrity are critical.

IC Role / Device Role / Timing Role: Primary 2.25V bias rail for instrumentation amplifiers and 24-bit delta-sigma ADCs.

Use Value: 7µV_RMS noise and 95dB PSRR prevent switching artifacts from corrupting sub-µV biological signals.

Use Scenario: Supplying image sensor analog core and ISP power domains in compact 4K surveillance cameras.

IC Role / Device Role / Timing Role: Clean post-regulator for CIS analog supply (AVDD), decoupling noisy DC/DC outputs.

Use Value: 140mV dropout enables efficient use of 3.3V intermediate rail; 1mm × 1mm footprint saves space near sensor die.

Smart Meters

Wearables

Use Scenario: Providing stable 2.25V reference for metrology ADCs and RF transceivers in ANSI C12.19-compliant utility meters.

IC Role / Device Role / Timing Role: Precision voltage source for sigma-delta modulators and sub-GHz ISM-band radios.

Use Value: ±1.5% output tolerance over temperature ensures metering accuracy compliance without calibration drift.

Use Scenario: Regulating power to MEMS motion sensors and Bluetooth LE SoCs in fitness bands with 10+ day battery life.

IC Role / Device Role / Timing Role: Always-on LDO for RTC, sensor hub, and BLE radio sleep-mode supply.

Use Value: 6.5µA I_Q minimizes standby drain; smart EN simplifies host MCU wake-up sequencing.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS7A20225PDBVR	SOT-23-5 package (2.9mm × 2.8mm); 145mV dropout at 300mA; R_θJA = 187.1°C/W.	Better thermal margin in low-airflow industrial enclosures; larger footprint limits ultra-dense layouts.	Select when board-level thermal resistance exceeds 110°C/W and manual rework is preferred over X2SON reflow.
MCP1700T-2202E/TT	250mA max output; 17µV_RMS noise; no integrated EN pulldown; requires external 100nF bypass cap.	Limited for RF-sensitive loads; higher noise restricts use to digital I/O or LED biasing-not analog signal chains.	Choose only for cost-sensitive, non-RF applications where 6.5µA I_Q and 7µV noise are not required.

Compared with TPS7A20225PDBVR and MCP1700T-2202E/TT, the TPS7A20225PDQNR delivers superior noise performance and smallest footprint-critical for miniaturized RF/analog systems-while its smart EN and auto-discharge simplify power sequencing in battery-operated devices.

Availability

TPS7A20225PDQNR is available at Aetrix Electronics and suitable for portable medical sensors, IP network cameras, and wearables requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS7A20225PDQNR 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 portfolio coverage.

The TPS7A20 family targets ultra-low-noise, low-I_Q power management for RF, precision analog, and battery-constrained applications-emphasizing noise suppression, small size, and simplified system integration.

FAQ

What is the maximum output current capability of the TPS7A20225PDQNR?

The TPS7A20225PDQNR delivers up to 300mA of continuous output current while maintaining regulation and specified noise/PSRR performance. Its current limit is 360–730mA depending on output voltage and package; however, sustained operation above 300mA may exceed thermal limits in the 1mm × 1mm X2SON package without adequate PCB copper area.

Does the TPS7A20225PDQNR require an external noise-bypass capacitor?

No, the TPS7A20225PDQNR does not require an external noise-bypass capacitor. Its internal architecture achieves 7µV_RMS output noise (10Hz–100kHz) without additional capacitance-verified across temperature and load conditions per SBVS338H datasheet Section 5.5.

What is the purpose of the thermal pad on the TPS7A20225PDQNR package?

The thermal pad (Pin 5) on the TPS7A20225PDQNR's X2SON package serves exclusively for heat dissipation. It must be soldered to a GND-connected copper pour to achieve the rated R_θJB = 110.6°C/W; leaving it unconnected increases junction temperature by >30°C at 300mA load.

How does the smart enable pulldown function in the TPS7A20225PDQNR?

The TPS7A20225PDQNR features a 500kΩ internal pulldown resistor on the EN pin, ensuring the device remains disabled when EN is floating. When EN rises above 0.9V, the pulldown disconnects to reduce leakage-eliminating need for external pull-down resistors in battery-sensitive designs.

Can the TPS7A20225PDQNR operate with a 1.6V input supply?

Yes, the TPS7A20225PDQNR supports input voltages from 1.6V to 6.0V. At 1.6V input and 2.25V output, it operates in dropout mode (V_IN < V_OUT + V_DO); quiescent current remains 6.5µA typical, but output regulation is not guaranteed below V_IN = V_OUT + 140mV.

TPS7A20225PDQNR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 4-XDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 6V

Voltage - Output (Min/Fixed):: 2.5V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.14V @ 300mA

Current - Output:: 300mA

Current - Quiescent (Iq):: 15 µA

Current - Supply (Max):: -

PSRR:: -

Control Features:: Current Limit, Enable, Soft Start

Protection Features:: Over Current, Over Temperature, Under Voltage Lockout (UVLO)

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 4-X2SON (1x1)

TPS7A20225PDQNR FAQ

1.How can I place an order for TPS7A20225PDQNR through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS7A20225PDQNR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TPS7A20225PDQNR reliable?

The price and inventory of TPS7A20225PDQNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS7A20225PDQNR is usually 5 days.

3.What payment methods are accepted for TPS7A20225PDQNR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS7A20225PDQNR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS7A20225PDQNR?

TPS7A20225PDQNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS7A20225PDQNR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TPS7A20225PDQNR?

For technical support, including TPS7A20225PDQNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS7A20225PDQNR requirements.

6.How does Aetrix verify that TPS7A20225PDQNR is sourced from the original manufacturer or authorized distributors?

All TPS7A20225PDQNR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS7A20225PDQNR meets industry standards.

7.What is the process for return or replacement of TPS7A20225PDQNR?

All TPS7A20225PDQNR units undergo pre-shipment inspection (PSI). If there is an issue with TPS7A20225PDQNR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TPS7A20225PDQNR part is unused and in its original packaging.

Return procedure for TPS7A20225PDQNR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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