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HomeProductsIntegrated Circuits (ICs)Specialized ICsTPS7A2418DBVR
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TPS7A2418DBVR - Texas Instruments

Manufacturer Part Number
TPS7A2418DBVR
Manufacturer
Texas Instruments
Allelco Part Number
41D-TPS7A2418DBVR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
9,040 pcs available, New & Original
Parts Description
SOT-23-5
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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Our certification
In stock: 9040
  • Unit Price: $0.277
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.277 $0.28
10+ $0.218 $2.18
30+ $0.189 $5.67
100+ $0.163 $16.30
500+ $0.155 $77.50
1000+ $0.151 $151.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

TPS7A2418DBVR Tech Specifications
Texas Instruments - TPS7A2418DBVR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TPS7A2418DBVR

Product Attribute Attribute Value
Part Number TPS7A2418DBVR
Package SOT-23-5
Description SOT-23-5
Stock Condition Get 9040 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer Texas Instruments
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Parts Introduction

TPS7A2418DBVR Image
TPS7A2418DBVR (1)

Manufacturer Part Number

TPS7A2418DBVR

Manufacturer

texas-instruments

Introduction

The TPS7A2418DBVR is a high-performance, low-dropout (LDO) linear voltage regulator from Texas Instruments. It is designed to provide a stable and accurate output voltage of 1.8V, with a maximum dropout voltage of 0.25V at 200mA of output current. This regulator is suitable for a wide range of applications that require a clean and reliable power supply.

Product Features and Performance

Output Voltage: Fixed 1.8V

Maximum Input Voltage: 18V

Maximum Output Current: 200mA

Low Dropout Voltage: 0.25V @ 200mA

Low Quiescent Current: 4.5 µA

High Power Supply Rejection Ratio (PSRR): 75dB ~ 62dB (10Hz ~ 1kHz)

Enable Control Feature

Over Current, Over Temperature, and Under Voltage Lockout (UVLO) Protection

Product Advantages

Highly efficient and stable output voltage

Low power consumption with low quiescent current

Compact surface mount package (SOT-23-5)

Integrated protection features for improved reliability

Wide operating temperature range of -40°C to 125°C

Key Reasons to Choose This Product

Consistent and reliable power supply for sensitive electronic circuits

Optimized for low-power applications with its high efficiency and low quiescent current

Compact and space-saving design for integration into small form factor devices

Robust protection features ensure long-term reliability and safety

Quality and Safety Features

Rigorous quality control and testing procedures

Compliance with industry safety standards

Robust thermal management for optimal performance

Compatibility

The TPS7A2418DBVR is compatible with a wide range of electronic devices and can be used in various applications, including:

Portable electronics

Industrial control systems

Telecommunications equipment

Consumer electronics

Application Areas

Power supply for microcontrollers, processors, and other digital circuits

Regulated power for analog and mixed-signal components

Bias voltage generation for operational amplifiers and other analog circuits

General-purpose voltage regulation in electronic systems

Product Lifecycle

The TPS7A2418DBVR is an active product, and our website's sales team continues to offer it as part of their portfolio of voltage regulator solutions. There are no known plans for the discontinuation of this product at this time. However, as technology evolves, customers are advised to check with our website's sales team or their authorized distributors for the latest information on product availability and potential alternative options.

Frequently Asked Questions(FAQ)

How does the TPS7A2418DBVR's dropout voltage of 0.25V at 200mA impact system efficiency in battery-powered designs, and what input voltage margin is required to maintain regulation under full load?
The TPS7A2418DBVR exhibits a maximum dropout voltage of 0.25V when delivering its rated 200mA output current. In battery-operated systems where headroom is limited—such as Li-ion cells degrading to ~3.0V during discharge—this dropout characteristic demands careful margin planning. To ensure stable 1.8V delivery, the input must remain at least 0.25V above the output, meaning a minimum input of 2.05V is required. For example, with a 3.3V supply, headroom is acceptable; however, in a 2.7V system (e.g., some polymer batteries), this regulator may fail to deliver full current if the input dips below 2.05V. Designers should account for this when selecting power sources or implementing boost stages.
What are the key differences between the TPS7A2418DBVR and the TPS7A2425DBVR in terms of output voltage and thermal performance under identical load conditions?
While both regulators share the same package (SOT-23-5) and electrical characteristics such as quiescent current (4.5µA), input range (up to 18V), and protection features, they differ in fixed output voltage: the TPS7A2418DBVR provides 1.8V, whereas the TPS7A2425DBVR outputs 2.5V. Under a 200mA load, the power dissipation for the TPS7A2418DBVR would be (Vin - 1.8V) × 200mA, and similarly for the 2.5V variant. Assuming a 3.3V input, the TPS7A2418DBVR dissipates 0.3W, while the TPS7A2425DBVR dissipates 0.16W—lower due to reduced differential voltage. Thus, for the same Vin and Iout, the higher-output variant runs cooler, improving thermal reliability in space-constrained applications.
Can the TPS7A2418DBVR safely operate from a 16V automotive transient input without external protection, given its 18V absolute maximum rating?
Although the TPS7A2418DBVR specifies an absolute maximum input voltage of 18V, automotive environments routinely expose ICs to transients exceeding this threshold—such as load dump events reaching 40V. Operating near the 18V limit offers little safety margin. A 16V input suggests proximity to the upper specification, but without additional clamping circuitry (like TVS diodes or series resistors), repeated exposure to such transients risks internal breakdown despite the UVLO feature, which only prevents startup below a certain threshold. Therefore, while brief excursions might be tolerated, sustained operation at 16V in automotive contexts requires external surge protection to comply with ISO 7637-2 standards and ensure long-term reliability.
How does the TPS7A2418DBVR’s PSRR degrade across frequency, and what implications does this have for noise-sensitive analog subsystems like RF receivers?
The TPS7A2418DBVR offers a power supply rejection ratio (PSRR) ranging from approximately 75dB at low frequencies (10Hz) down to 62dB around 1kHz. Beyond 1kHz, PSRR declines further, often falling below 50dB by 100kHz. In RF receiver front ends sensitive to supply noise (e.g., GSM burst transmissions inducing ripple), this attenuation may be insufficient to prevent interference with LNA or ADC performance. If the reference clock jitter exceeds 1ps RMS due to uncorrelated supply noise, bit error rates can rise significantly. Consequently, designers using this regulator for 1.8V digital cores interfaced with analog blocks should pair it with local bypass capacitors (≥10µF ceramic + 1µF MLCC) and consider post-regulation filtering or dedicated low-noise rails.
Is it feasible to parallel multiple TPS7A2418DBVR units to increase current capacity, and what challenges arise in doing so?
Directly paralleling TPS7A2418DBVR devices is not recommended due to mismatched Vf characteristics and lack of built-in current sharing. Even small variations in threshold voltage between units can cause one regulator to conduct disproportionately more current than others, leading to localized heating and potential thermal runaway. Additionally, feedback loops may interact unpredictably, destabilizing the system. Instead, designers seeking >200mA capability should select a single higher-current linear regulator or switch to a synchronous buck converter with better efficiency at elevated loads. Paralleling should only be considered after thorough thermal and stability analysis using matched pairs under worst-case process corners.
What role does the enable pin play in extending battery life when using the TPS7A2418DBVR in intermittent-use IoT devices?
The TPS7A2418DBVR includes a dedicated enable pin that allows shutdown control independent of input presence. When disabled, quiescent current drops to typically 0.1µA (from 4.5µA active), dramatically reducing standby power consumption. In battery-powered sensors transmitting data hourly, this enables ultra-low-power modes during sleep intervals. For instance, in a device drawing 200mA during 5-second wake cycles and sleeping otherwise, enabling the disable function extends battery life from months to over a year depending on duty cycle. Proper pull-up/pull-down resistor selection ensures robust digital interfacing while minimizing leakage paths.
How does the operating temperature range of -40°C to 125°C influence solder joint reliability and PCB layout choices for the TPS7A2418DBVR?
The TPS7A2418DBVR’s junction temperature rating up to 125°C implies robust construction suitable for harsh environments. However, thermal cycling between -40°C and ambient induces CTE mismatch stress at solder joints, especially in lead-free SAC305 alloys used today. The SOT-23-5 package has five leads; inadequate copper pad sizing or insufficient thermal relief can concentrate stress, increasing crack risk over time. Best practices include using at least 2x pad size on each connection, adding vias to inner layers, and avoiding sharp traces near terminals. Layout should minimize trace inductance/capacitance to support high-speed switching if used upstream, though this part is linear.
Given its 200mA current limit and 0.25V dropout, how does the TPS7A2418DBVR compare thermally to a buck converter like the TPS5622M for a 1.8V/150mA application powered from a 3.3V source?
In a 3.3V-to-1.8V conversion at 150mA, the TPS7A2418DBVR dissipates (3.3V - 1.8V) × 0.15A = 0.225W. At 25°C ambient, this results in a junction temperature rise of roughly 22.5°C assuming RθJA ≈ 100°C/W, keeping TJ well within limits. However, a buck converter like the TPS5622M achieves >90% efficiency, dissipating <0.05W under similar conditions—offering lower heat generation and smaller heatsinks. While the linear regulator simplifies EMI concerns and provides instant response, the buck excels in thermal management and battery life. Selection hinges on whether simplicity outweighs efficiency gains, particularly in compact, thermally constrained designs.

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Evaluation: 10 Articles

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    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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    Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

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    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

  • Arch***ct
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    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
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    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

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  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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Electrostatic Discharge Protection and Handling

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TPS7A2418DBVR Image

TPS7A2418DBVR

Texas Instruments
41D-TPS7A2418DBVR

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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