LM397MF/NOPB

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LM397MF/NOPB

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規格

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
Type General Purpose
NumberofElements 1
OutputType CMOS, Open-Collector, TTL
Voltage-SupplySingle/Dual(±) 5V ~ 30V, ±2.5V ~ 15V
Voltage-InputOffset(Max) 7mV @ 30V
Current-InputBias(Max) 0.25µA @ 5V
Current-Output(Typ) 13mA @ 5V
Current-Quiescent(Max) 2mA
PropagationDelay(Max) 940µs
OperatingTemperature -40°C ~ 85°C
Package/Case SC-74A, SOT-753
MountingType Surface Mount

概述

Description

The LM397MF/NOPB is a low-dropout (LDO) voltage regulator designed to deliver a stable output voltage with a high degree of precision. It typically provides an output voltage of 1.2V to 37V, with a maximum output current of around 1A. Key features include a low dropout voltage of approximately 0.5V at full load, which allows it to maintain regulation even when the input voltage is close to the output voltage. The device is equipped with short-circuit protection and thermal shutdown for enhanced safety and reliability.
The LM397MF/NOPB operates over a wide temperature range, making it suitable for various applications, including power management in portable devices, consumer electronics, and industrial equipment. Its NOPB designation indicates it is lead-free and compliant with environmental regulations. The package options typically include TO-220 and surface-mount configurations, facilitating integration into different circuit designs. Overall, the LM397MF/NOPB is a versatile choice for engineers seeking reliable voltage regulation in their projects.

Features

The LM397MF/NOPB is a precision voltage reference with several key features:
1. Voltage Reference: Provides a stable output voltage of 1.235V with a low temperature coefficient.
2. Low Noise: Offers low output noise, which is essential for high-accuracy applications.
3. Wide Operating Range: Functions effectively across a broad input voltage range, enhancing versatility in different circuits.
4. Temperature Stability: Maintains reference voltage stability over a wide temperature range, ensuring reliability in varying conditions.
5. High Load Regulation: Delivers consistent output with minimal variation under different load conditions.
6. TO-220 Package: Available in a TO-220 package, which allows for easy heatsinking and efficient thermal management.
7. Shutdown Capability: Supports a shutdown feature for power saving in battery-operated devices.
Overall, the LM397MF/NOPB is ideal for applications requiring precision voltage referencing, such as in analog-to-digital converters, sensor circuits, and power management systems.

Package

The LM397MF/NOPB is packaged in a Metal Can (TO-39) type package.

Pinout

The LM397MF/NOPB is a precision voltage reference with a pin count of 8. It is designed to provide a stable and accurate voltage reference for various applications. The functions of the pins are as follows:
1. Pin 1 (NC): No connection.
2. Pin 2 (VOUT): Output voltage, typically set at 1.24V.
3. Pin 3 (GND): Ground reference.
4. Pin 4 (VREF): Reference voltage pin.
5. Pin 5 (R1): Used for external resistor connection for adjusting output.
6. Pin 6 (R2): Used for external resistor connection for adjusting output.
7. Pin 7 (VIN): Input voltage supply.
8. Pin 8 (NC): No connection.
The LM397 is commonly used in applications requiring high precision, such as analog-to-digital converters, sensor biasing, and voltage regulation.

Manufacturer

The LM397MF/NOPB is manufactured by Texas Instruments (TI), a prominent American technology company. Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits, with a strong focus on analog and embedded processing solutions. Established in 1930, TI is recognized for its innovations in the electronics industry and provides a wide range of products, including analog chips, microcontrollers, and digital signal processors. The company serves numerous sectors such as automotive, industrial, communications, and consumer electronics, contributing to advancements in technology and enabling smarter systems worldwide.

Application

The LM397MF/NOPB is a low-dropout (LDO) voltage regulator primarily used in applications requiring a stable output voltage with low noise and low power dissipation. Common areas include power management for microcontrollers, sensors, and analog devices, battery-powered systems, and other portable electronics. It is also suitable for post-regulation in power supply circuits and providing reference voltages in precision applications.

Equivalent

The LM397MF/NOPB is a low-dropout (LDO) voltage regulator. Equivalent products include the LM317, LM1117, LP2950, and MCP1700. Always check specifications such as output voltage, current rating, and dropout voltage for compatibility.

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