LM317EMPX/NOPB

Name: LM317EMPX/NOPB
Brand: Texas Instruments
Rating: 4.5 (10 reviews)
Author: Lisleapex

LM317EMPX/NOPB is a common regulator with a wide voltage range

5,453 Effective Inventory

LM317EMPX/NOPB

Effective Inventory5,453

LM317EMPX/NOPB is a common regulator with a wide voltage range

Manufacturer Part # : LM317EMPX/NOPB
Package/Case: SOT-223 (DCY)-4
Brand: Texas Instruments
Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Series : LM317

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LM317EMPX/NOPB DataSheet

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LM317EMPX/NOPB Details

The LM317EMPX/NOPB is an adjustable voltage regulator from Texas Instruments, designed for precision voltage regulation in various electronic circuits. This regulator offers a wide input voltage range and adjustable output voltage, making it suitable for a wide range of applications. It is housed in a TO-252 package, providing thermal performance and easy mounting on PCBs.

Pinout

1 (ADJ): Adjustable Output
2 (VOUT): Regulated Output Voltage
3 (VIN): Input Voltage

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

Key Features

Adjustable Output: Allows for precise voltage regulation tailored to specific circuit requirements.
Wide Input Voltage Range: Accepts a wide range of input voltages for versatility in design.
Thermal Performance: The TO-252 package enhances thermal dissipation for improved performance.
Short Circuit Protection: Provides protection against output short circuits for safe operation.
Low Dropout Voltage: Minimizes voltage drop between input and output for efficient regulation.

Application

Power Supply Regulation: Ideal for stabilizing voltages in power supply circuits.
Electronic Projects: Used in various electronic projects requiring adjustable voltage regulation.
Battery Charging: Suitable for charging circuits where precise voltage control is necessary.

Where to Use

The LM317EMPX/NOPB is recommended for applications requiring precise and adjustable voltage regulation. It is commonly used in power supplies, battery chargers, and electronic prototypes where stable voltage output is crucial.

How to Use

Connect the LM317EMPX/NOPB to your circuit by wiring the input, output, and adjust pins according to your desired output voltage. Ensure proper heat sinking for thermal management, especially when handling high power dissipation. Refer to the datasheet for detailed usage instructions and application notes.

Application Circuit

The application circuit diagram for the LM317EMPX/NOPB illustrates how to incorporate the voltage regulator into your circuit design. It includes connections for input voltage, output voltage, and adjustment, ensuring proper regulation and performance.

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

Equivalents

LM317T: A comparable adjustable voltage regulator with similar functionality from Texas Instruments.
LM338K: An alternative high-current voltage regulator with adjustable output voltage.

Complementary

The LM317EMPX/NOPB can be used in conjunction with the LM337EMP/NOPB, a negative adjustable voltage regulator, to create dual polarity power supply systems with precise voltage regulation.

Ensure compatibility and proper circuit design when combining complementary voltage regulators for optimal performance.

Frequently Asked Questions

Q: What is the maximum output current of the LM317EMPX/NOPB?

A: The LM317EMPX/NOPB can provide a maximum output current of up to 1.5A, depending on the input-output voltage differential and operating conditions. Consult the datasheet for detailed specifications.

Q: Can the LM317EMPX/NOPB be used in battery-powered devices?

A: Yes, the LM317EMPX/NOPB is suitable for battery charging applications and other battery-powered devices where precise voltage regulation is required.

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)	1.5
Vin (max) (V)	40	Vin (min) (V)	3
Vout (max) (V)	37	Vout (min) (V)	1.2
Noise (µVrms)	35	Iq (typ) (mA)	5
Thermal resistance θJA (°C/W)	39	Rating	Catalog, Military
Load capacitance (min) (µF)	0	Regulated outputs (#)	1
Accuracy (%)	5	PSRR at 100 KHz (dB)	40
Dropout voltage (Vdo) (typ) (mV)	2250	Operating temperature range (°C)	0 to 0, 0 to 125

FAQs

What is LM317EMPX/NOPB?

The LM317EMPX/NOPB is a 3-terminal adjustable positive voltage regulator integrated circuit (IC) manufactured by Texas Instruments. It is designed to provide a stable and adjustable output voltage with high accuracy and low dropout voltage, making it suitable for a wide range of voltage regulation applications.

How Does LM317EMPX/NOPB Work?

The LM317EMPX/NOPB operates by using an internal voltage reference to maintain a constant output voltage, which can be adjusted using external resistors. It regulates the output voltage by controlling the current through an adjustable resistor network, providing a stable output even with varying input voltages and loads.

How Many Pins does LM317EMPX/NOPB have and What are the Functions of the Pinout Configuration?

The LM317EMPX/NOPB is housed in a 3-lead SOT-223 package. The pinout configuration includes:

Input: The input voltage is applied to this pin for regulation.
Output: This pin provides the regulated output voltage.
Adjust: Connects to an external resistor network to set the output voltage.

What are the Pros and Cons of LM317EMPX/NOPB?

Pros:

Adjustable Output: Can be configured to provide a wide range of output voltages.
Low Dropout Voltage: Can regulate output voltage even when input voltage is only slightly higher than the desired output voltage.
Protection Features: Includes overcurrent and thermal shutdown protection for reliability.
Easy to Use: Requires minimal external components for basic operation.

Cons:

Heat Dissipation: May require a heat sink for high-power applications due to power dissipation.
External Components: May require additional capacitors and resistors for optimal performance in certain applications.

Are There Any Equivalents/Alternatives to LM317EMPX/NOPB for Recommendation?

The LM338 from Texas Instruments is a higher current version of the LM317, suitable for higher power applications.
Alternatives to the LM317EMPX/NOPB include the LDO regulators from Analog Devices and ON Semiconductor.