LM2941S/NOPB

Name: LM2941S/NOPB
Brand: Texas Instruments
Rating: 4.5 (10 reviews)
Author: Lisleapex

Adjustable 1A Low Dropout Regulator LM2941S

4,329 Effective Inventory

LM2941S/NOPB

Effective Inventory4,329

Adjustable 1A Low Dropout Regulator LM2941S

Manufacturer Part # : LM2941S/NOPB
Package/Case: TO-263 (KTT)-5
Brand: Texas Instruments
Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Series : LM2941

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LM2941S/NOPB DataSheet

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LM2941S/NOPB Details

The LM2941S/NOPB is an adjustable linear low-dropout (LDO) regulator from Texas Instruments, designed for reliable power management in a wide range of applications. This device features an adjustable output voltage between 5V and 20V, making it suitable for various industrial and automotive applications.

Pinout

1 (ADJ): Adjustable Output Voltage Pin
2 (VIN): Input Voltage Pin
3 (VOUT): Output Voltage Pin
4 (GND): Ground Pin

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

Adjustable Output Voltage: Offers an adjustable output voltage between 5V and 20V for flexible power management.
Low Dropout Voltage: Provides a low dropout voltage of 1.2V, ensuring reliable operation in a wide range of input voltages.
High Efficiency: Features high efficiency with a typical quiescent current of 10mA.

Applications

Industrial Automation: Suitable for industrial automation applications where reliable power management is crucial.
Automotive Systems: Can be used in automotive systems, such as engine control units and infotainment systems, where high reliability and low dropout voltage are essential.

Where to Use

The LM2941S/NOPB is suitable for applications that require adjustable power management, such as industrial automation, automotive systems, and other high-reliability applications where low dropout voltage and high efficiency are important.

How to Use

Connect the LM2941S/NOPB to your power supply by wiring the VIN pin to the input voltage source. Set the output voltage using the ADJ pin, and connect the VOUT pin to your load. Ensure proper grounding connections to GND. For detailed usage instructions, refer to the datasheet.

Application Circuit

The application circuit diagram for the LM2941S/NOPB illustrates how to connect the regulator to a power supply and set the output voltage. It includes connections for input voltage, output voltage, and ground, ensuring proper operation and reliable power management.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

LM2940: A similar adjustable LDO regulator from Texas Instruments offering comparable features and performance.
MAX1555: An alternative adjustable LDO regulator from Maxim Integrated with equivalent functionality.

Complementary

The LM2941S/NOPB can be complemented by the LM2941-5.0, which offers a fixed output voltage of 5V and is suitable for applications where a stable reference voltage is required.

When selecting complementary regulators, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.

Frequently Asked Questions

Q: What is the typical quiescent current of the LM2941S/NOPB?

A: The typical quiescent current of the LM2941S/NOPB is 10mA.

Q: Can the LM2941S/NOPB be used in automotive systems?

A: Yes, the LM2941S/NOPB can be used in automotive systems where high reliability and low dropout voltage are essential.

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)	1
Vin (max) (V)	26	Vin (min) (V)	6
Vout (max) (V)	20	Vout (min) (V)	5
Noise (µVrms)	600	Iq (typ) (mA)	10
Thermal resistance θJA (°C/W)	41	Rating	Catalog
Load capacitance (min) (µF)	22	Regulated outputs (#)	1
Features	Enable	Accuracy (%)	5
PSRR at 100 KHz (dB)	67	Dropout voltage (Vdo) (typ) (mV)	500
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.

Preliminary Specification LM2941S/NOPB PDF Download

FAQs

What is LM2941S/NOPB?

The LM2941S/NOPB is a low dropout voltage regulator designed by Texas Instruments. It is a high-performance regulator capable of providing a stable output voltage even when the input voltage is only slightly higher than the desired output voltage. This makes it ideal for applications requiring a reliable and efficient power supply.

How Does LM2941S/NOPB Work?

The LM2941S/NOPB operates by regulating the output voltage based on the input voltage and the desired output voltage. It maintains a stable output by adjusting the internal circuitry to ensure a constant voltage despite variations in the input voltage. The low dropout voltage feature allows the regulator to operate efficiently even with small voltage differentials.

How Many Pins does LM2941S/NOPB have and What are the Functions of the Pinout Configuration?

The LM2941S/NOPB is housed in a TO-263 (D2PAK) package with 3 pins. The pinout configuration includes:

Input (VIN): Input voltage pin.
Output (VOUT): Regulated output voltage pin.
Ground (GND): Ground connection pin.

What are the Pros and Cons of LM2941S/NOPB?

Pros:

Low Dropout Voltage: Maintains regulation at low input-output differentials.
High Accuracy: Provides precise and stable output voltage.
Short-Circuit Protection: Includes built-in protection against short circuits.
Thermal Shutdown: Features thermal shutdown protection to prevent overheating.
Compact Package: TO-263 package offers efficient heat dissipation.

Cons:

Heat Dissipation: May require a heat sink for better thermal management in high-power applications.
Limited Current Capacity: Output current may be limited compared to higher power regulators.

Are There Any Equivalents/Alternatives to LM2941S/NOPB for Recommendation?

Alternatives to the LM2941S/NOPB include the LM1117 from Texas Instruments and the LT1086 from Analog Devices.
The LM2937 from Texas Instruments is a similar low dropout regulator with different features.