TPS74901RGWT
LDO Voltage Regulators 3.0A LDO Linear RegTPS74901RGWT
LDO Voltage Regulators 3.0A LDO Linear Reg
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Manufacturer Part # : TPS74901RGWT
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Package/Case: VQFN-20
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Part Status : ACTIVE
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Brand: Texas Instruments
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Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
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Series : TPS74901
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TPS74901RGWT DataSheet

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TPS74901RGWT Details
The TPS74901RGWT is a low-dropout regulator from Texas Instruments, designed for reliable voltage regulation in various applications. This device features a fixed output voltage of 3V and a maximum output current of 500mA, making it suitable for portable devices, wireless modules, industrial sensors, and automotive systems where a stable and reliable voltage supply is required.
Key Features
- V OUT range: 0.8 V to 3.6 V: Provides a wide range of output voltages for various applications.
- Ultra-low V IN range: 0.8 V to 5.5 V: Enables operation with low input voltage, suitable for battery-powered devices.
- V BIAS range: 2.7 V to 5.5 V: Permits low V IN operation with good transient response and noise immunity.
- Maximum output current: 500mA: Suitable for powering moderate-load devices, such as sensors or small motors.
Applications
The TPS74901RGWT is suitable for various applications that require a stable and reliable voltage supply, including:
- Portable devices: Such as smartphones, tablets, or laptops.
- Wireless modules: Including Wi-Fi, Bluetooth, or Zigbee modules.
- Industrial sensors: Measuring temperature, pressure, or other physical parameters.
- Automotive systems: Providing power for various automotive applications, such as infotainment systems or safety features.
Where to Use
The TPS74901RGWT is suitable for use in a wide range of applications where a stable and reliable voltage supply is required. It can be used in portable devices, industrial sensors, automotive systems, or any other application that demands a low-dropout regulator with high performance.
How to Use
To use the TPS74901RGWT, simply connect it to your power source and load. Ensure proper connections for input voltage (V IN), output voltage (V OUT), and ground (GND). For detailed usage instructions, refer to the datasheet.
Application Circuit
The application circuit diagram for the TPS74901RGWT illustrates how to connect the regulator to your power source and load. It includes connections for input voltage (V IN), output voltage (V OUT), and ground (GND), ensuring proper operation and reliable voltage regulation.
(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)
Complementary
The TPS74901RGWT can be complemented by other low-dropout regulators from Texas Instruments, such as the TPS7A05 or TPS7A50, which offer similar features and performance for different applications.
When selecting complementary devices, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.
Frequently Asked Questions
Q: What is the maximum output current of the TPS74901RGWT?
A: The TPS74901RGWT has a maximum output current of 500mA. For more details, refer to the datasheet for specific operating conditions and limitations.
Q: Can the TPS74901RGWT be used in automotive applications?
A: Yes, the TPS74901RGWT is suitable for use in automotive systems where a stable and reliable voltage supply is required. It can provide power for various automotive applications, such as infotainment systems or safety features.

Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Output options | Adjustable Output | Iout (max) (A) | 3 |
Vin (max) (V) | 5.5 | Vin (min) (V) | 0.8 |
Vout (max) (V) | 3.6 | Vout (min) (V) | 0.8 |
Noise (µVrms) | 20 | Iq (typ) (mA) | 3 |
Thermal resistance θJA (°C/W) | 34, 36 | Rating | Catalog |
Load capacitance (min) (µF) | 2.2 | Regulated outputs (#) | 1 |
Features | Enable, Power good, Soft start | Accuracy (%) | 2 |
PSRR at 100 KHz (dB) | 28 | Dropout voltage (Vdo) (typ) (mV) | 60, 120 |
Operating temperature range (°C) | -40 to 125 |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is TPS74901RGWT?
The TPS74901RGWT is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. It is designed to provide a stable output voltage with minimal voltage drop, making it ideal for applications requiring precise voltage regulation in power management circuits.
How Does TPS74901RGWT Work?
The TPS74901RGWT regulates the output voltage by comparing the reference voltage to the feedback voltage and adjusting the pass device accordingly. It maintains a stable output voltage even when there are fluctuations in the input voltage or current, providing a reliable power supply for connected components.
How Many Pins does TPS74901RGWT have and What are the Functions of the Pinout Configuration?
The TPS74901RGWT is housed in a 20-pin VQFN (Very Thin Quad Flat No-Lead) package. The pinout configuration includes:
- VIN: Input voltage pin.
- VOUT: Output voltage pin.
- GND: Ground pin.
- EN: Enable pin to turn the regulator on or off.
- TRIM: Pin for adjusting the output voltage.
- PG: Power Good output pin for monitoring the output voltage.
What are the Pros and Cons of TPS74901RGWT?
Pros:
- Low Dropout Voltage: Maintains a stable output voltage even when input voltage is close to the output voltage.
- Low Quiescent Current: Operates with minimal standby current, suitable for power-sensitive applications.
- Thermal Protection: Includes built-in thermal shutdown protection to prevent overheating.
- Wide Input Voltage Range: Supports a wide range of input voltages for versatile applications.
- Compact Package: The VQFN package is space-efficient and offers good thermal performance.
Cons:
- Heat Dissipation: May require additional heat sinking for high current applications to manage heat dissipation.
- Cost: High-performance LDO regulators like the TPS74901RGWT may be relatively more expensive than basic linear regulators.
- Dependency on External Components: May need additional capacitors or resistors for stability and filtering.
Are There Any Equivalents/Alternatives to TPS74901RGWT for Recommendation?
- The TPS79901 from Texas Instruments is a similar LDO voltage regulator with different features.
- Alternatives to the TPS74901RGWT include the AP7315 from Diodes Incorporated and the LD39150PT33R from STMicroelectronics.
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