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

Texas Instruments TPS7A2050PDQNRM3

Name: TPS7A2050PDQNRM3
Brand: Texas Instruments
SKU: TPS7A2050PDQNRM3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS7A2050PDQNRM3

Manufacturer:: Texas Instruments

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

Package:: 4-XDFN Exposed Pad

Datasheet:: TPS7A2050PDQNRM3.pdf

Description:: PROTOTYPE

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Product details

Overview

TPS7A2050PDQNRM3 from Texas Instruments is a 300mA ultra-low-noise, low-I_Q, high-PSRR LDO regulator in a 1mm × 1mm X2SON-4 package, delivering 5.0V 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 TPS7A2050PDQNRM3 datasheet, TPS7A2050PDQNRM3 pinout, TPS7A2050PDQNRM3 application, or TPS7A2050PDQNRM3 equivalent, key selection criteria include dropout voltage (140mV max @300mA), smart enable pulldown (500kΩ internal), stability with 1µF ceramic output capacitor, and thermal performance in compact X2SON packaging.

Technical Context

The TPS7A2050PDQNRM3 employs a precision bandgap reference and low-noise error amplifier architecture to achieve 7μV_RMS output noise without external bypass capacitance. Its high PSRR (95dB @1kHz) stems from multi-stage regulation and optimized internal compensation.

It integrates a smart enable circuit with an internal 500kΩ pulldown resistor that holds EN low by default, eliminating external pull-down components. The device features internal soft-start to limit inrush current and automatic output discharge via a 150Ω pulldown when disabled.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	300mA maximum continuous - supports power rails for analog front-ends and RF transceivers without thermal derating in X2SON package.
Output Noise	7μV_RMS (10Hz–100kHz) - enables clean biasing of ADCs, PLLs, and RF receivers without noise-bypass capacitor.
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 and IoT sensor nodes.
Dropout Voltage	140mV max @300mA (V_OUT = 3.3V) - allows operation from single-cell Li-ion (3.0V min) down to 3.17V while maintaining regulation.
Input Voltage Range	1.6V to 6.0V - compatible with wide-input DC/DC outputs and multi-cell battery systems.
Output Accuracy	±1.5% max over line, load, and temperature - ensures stable reference voltage for precision data acquisition subsystems.

Pinout & Package

TPS7A2050PDQNRM3 uses the 1mm × 1mm X2SON-4 (DQN) package with wettable flank terminations for automated optical inspection. Thermal pad is exposed on bottom and 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 5.0V; requires ≥1µF ceramic capacitor to GND for stability and transient response.
2 (GND)	Power ground	Common return path; connects to thermal pad - critical for thermal dissipation and noise immunity.
3 (EN)	Enable control input	Active-high logic; internal 500kΩ pulldown ensures default disable; V_EN(HI) = 0.9V min.
4 (IN)	Input supply	Accepts 1.6V–6.0V; benefits from local 1µF ceramic capacitor to minimize source impedance.

Key Features

Feature	Design Value
Noise-bypass-capacitor-free operation	7μV_RMS output noise enables space-constrained RF/analog designs without extra BOM cost or layout area.
Smart enable with internal pulldown	500kΩ integrated EN pulldown eliminates external resistor, reducing component count and PCB footprint.
Stable with 1µF ceramic output capacitor	Reduces solution size and cost versus traditional LDOs requiring ≥10µF tantalum or aluminum electrolytic caps.
Ultra-low quiescent current	6.5μA I_Q supports >1-year battery life in low-duty-cycle sensor applications (e.g., smart meter wake-up intervals).
Automatic output discharge	150Ω internal pulldown discharges V_OUT during shutdown - prevents back-powering or latch-up in multi-rail systems.

Applications

Portable Medical Sensors	IP Network Cameras
Use Scenario: Powering low-noise analog front-end (AFE) and ADC in handheld ECG or pulse oximeter modules. IC Role / Device Role / Timing Role: Ultra-low-noise 5.0V LDO supplying bias voltage to instrumentation amplifiers and sigma-delta ADCs. Use Value: 7μV_RMS noise ensures <1 LSB error in 16-bit medical-grade data acquisition without post-processing filtering.	Use Scenario: Providing clean 5.0V rail to CMOS image sensor and ISP in compact surveillance cameras. IC Role / Device Role / Timing Role: High-PSRR LDO isolating image sensor analog supply from noisy digital SoC domains. Use Value: 95dB PSRR at 1kHz rejects switching noise from adjacent buck converters, preventing image banding artifacts.
Smart Meters	Wearable Health Monitors
Use Scenario: Regulating 5.0V for metrology ADC and RF transceiver (Sub-GHz or NB-IoT) in utility meters. IC Role / Device Role / Timing Role: Low-I_Q LDO enabling long-term battery-backed operation during mains failure. Use Value: 6.5μA quiescent current extends 10-year battery life in tamper-detection and periodic reporting modes.	Use Scenario: Supplying 5.0V to optical heart-rate sensor (PPG) and motion sensor fusion IC in wrist-worn devices. IC Role / Device Role / Timing Role: Compact-area LDO with X2SON-4 footprint minimizing board real estate in constrained wearables. Use Value: 1mm × 1mm package reduces total power stage area by >60% vs. SOT-23 alternatives, enabling thinner form factors.

Portable Medical Sensors

IP Network Cameras

Use Scenario: Powering low-noise analog front-end (AFE) and ADC in handheld ECG or pulse oximeter modules.

IC Role / Device Role / Timing Role: Ultra-low-noise 5.0V LDO supplying bias voltage to instrumentation amplifiers and sigma-delta ADCs.

Use Value: 7μV_RMS noise ensures <1 LSB error in 16-bit medical-grade data acquisition without post-processing filtering.

Use Scenario: Providing clean 5.0V rail to CMOS image sensor and ISP in compact surveillance cameras.

IC Role / Device Role / Timing Role: High-PSRR LDO isolating image sensor analog supply from noisy digital SoC domains.

Use Value: 95dB PSRR at 1kHz rejects switching noise from adjacent buck converters, preventing image banding artifacts.

Smart Meters

Wearable Health Monitors

Use Scenario: Regulating 5.0V for metrology ADC and RF transceiver (Sub-GHz or NB-IoT) in utility meters.

IC Role / Device Role / Timing Role: Low-I_Q LDO enabling long-term battery-backed operation during mains failure.

Use Value: 6.5μA quiescent current extends 10-year battery life in tamper-detection and periodic reporting modes.

Use Scenario: Supplying 5.0V to optical heart-rate sensor (PPG) and motion sensor fusion IC in wrist-worn devices.

IC Role / Device Role / Timing Role: Compact-area LDO with X2SON-4 footprint minimizing board real estate in constrained wearables.

Use Value: 1mm × 1mm package reduces total power stage area by >60% vs. SOT-23 alternatives, enabling thinner form factors.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS7A2050PDBVR	SOT-23-5 package (2.9mm × 2.8mm); 145mV dropout @300mA (V_OUT=3.3V); no thermal pad.	Better thermal dissipation at high ambient temperatures (>85°C); larger PCB footprint required.	Choose for industrial environments where board space permits and junction temperature margin is critical.
MCP1700T-5002E/MB	250mA output; 17μV_RMS noise; 6μA I_Q; SOT-23-3 package; no enable pin.	Lacks EN control and automatic discharge; lower noise rejection (65dB PSRR @1kHz); not suitable for dynamic load scenarios.	Choose only for fixed-enable, low-current, cost-sensitive consumer applications where EN functionality is unnecessary.

Compared with TPS7A2050PDBVR and MCP1700T-5002E/MB, the TPS7A2050PDQNRM3 delivers superior noise performance and integrated enable control in the smallest footprint - making it optimal for space- and noise-constrained portable electronics where full feature set and miniaturization are prioritized.

Availability

TPS7A2050PDQNRM3 is available at Aetrix Electronics and suitable for portable medical equipment, IP network cameras, and wearable health monitors requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for TPS7A2050PDQNRM3 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 specializing in analog, embedded processing, and power management technologies with over 90 years of innovation in high-reliability components.

The TPS7A20 family is engineered for ultra-low-noise, low-power analog and RF power delivery in space-constrained portable electronics - targeting applications where noise, size, and battery life are critical design constraints.

FAQ

What is the maximum output current capability of the TPS7A2050PDQNRM3?

The TPS7A2050PDQNRM3 delivers up to 300mA of continuous output current under recommended operating conditions (T_J ≤ 125°C). Its internal current limit is rated at 360–730mA depending on output voltage and package, but sustained operation above 300mA may trigger thermal shutdown in the X2SON-4 package due to limited heat dissipation (R_θJA = 166.1°C/W).

Does the TPS7A2050PDQNRM3 require an external noise-bypass capacitor?

No, the TPS7A2050PDQNRM3 does not require an external noise-bypass capacitor. Its 7μV_RMS output noise (10Hz–100kHz) is achieved through proprietary low-noise circuitry and internal compensation - verified across temperature and load conditions per SBVS338H datasheet Figure 5-57.

What is the function of the thermal pad on the TPS7A2050PDQNRM3 package?

The exposed thermal pad on the TPS7A2050PDQNRM3's X2SON-4 package must be soldered to a GND-connected copper plane to achieve optimal thermal performance (R_θJB = 110.6°C/W). Leaving it floating degrades junction-to-board thermal resistance by >30%, increasing risk of thermal shutdown under 300mA load at elevated ambient temperatures.

How does the smart enable pulldown resistor work on the TPS7A2050PDQNRM3?

The TPS7A2050PDQNRM3 integrates a 500kΩ pulldown resistor on the EN pin that actively holds the input low when floating, ensuring default disable state. When V_EN exceeds 0.9V, the internal pulldown disconnects to reduce leakage - confirmed in datasheet Section 5.5 (I_EN = 90–250nA at V_EN = 6.0V).

Can the TPS7A2050PDQNRM3 operate with a 1µF output capacitor?

Yes, the TPS7A2050PDQNRM3 is stable with a minimum 1µF ceramic output capacitor (X5R/X7R, ≤100mΩ ESR), as validated in TI's application report SLVA733 and datasheet Section 5.3. Using smaller values risks instability; larger capacitors (up to 200µF) improve transient response but are not required for basic regulation.

TPS7A2050PDQNRM3 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):: 5V

Voltage - Output (Max):: -

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

Current - Output:: 300mA

Current - Quiescent (Iq):: 15 µA

Current - Supply (Max):: -

PSRR:: 95dB ~ 45dB (100Hz ~ 1MHz)

Control Features:: Current Limit, Enable

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

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

TPS7A2050PDQNRM3 FAQ

1.How can I place an order for TPS7A2050PDQNRM3 through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS7A2050PDQNRM3 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 TPS7A2050PDQNRM3 reliable?

The price and inventory of TPS7A2050PDQNRM3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS7A2050PDQNRM3 is usually 5 days.

3.What payment methods are accepted for TPS7A2050PDQNRM3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS7A2050PDQNRM3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS7A2050PDQNRM3?

TPS7A2050PDQNRM3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS7A2050PDQNRM3 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 TPS7A2050PDQNRM3?

For technical support, including TPS7A2050PDQNRM3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS7A2050PDQNRM3 requirements.

6.How does Aetrix verify that TPS7A2050PDQNRM3 is sourced from the original manufacturer or authorized distributors?

All TPS7A2050PDQNRM3 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 TPS7A2050PDQNRM3 meets industry standards.

7.What is the process for return or replacement of TPS7A2050PDQNRM3?

All TPS7A2050PDQNRM3 units undergo pre-shipment inspection (PSI). If there is an issue with TPS7A2050PDQNRM3, 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 TPS7A2050PDQNRM3 part is unused and in its original packaging.

Return procedure for TPS7A2050PDQNRM3:

1.Submit a request within 90 days.

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

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