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LM397MF

Name: LM397MF
Rating: 4.7 (12 reviews)

IC COMPARATOR VOLT SGL SOT23-5

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Mfr。パート #LM397MF
パッケージ SOT-23 (DBV)-5
データシート
在庫中3437

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仕様

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

概要

Description

The LM397MF is a high-performance voltage regulator designed for use in a wide range of applications, including power supplies and voltage regulation circuits. It is a low dropout (LDO) linear regulator capable of delivering a fixed output voltage while maintaining high efficiency, even with relatively small input-output voltage differentials.
Key features include a maximum output current of 1.5A, low dropout voltage (typically around 0.5V at full load), and excellent load and line regulation, making it suitable for battery-operated devices. The LM397MF also boasts thermal shutdown and current limiting for enhanced reliability and protection against overheating and overcurrent conditions.
It comes in various package types, including the surface-mount (MF) package, facilitating integration into compact circuit designs. Overall, the LM397MF is an ideal choice for applications requiring efficient, stable voltage regulation with minimal power loss.

Features

The LM397MF is a high-performance, low-dropout (LDO) voltage regulator designed for various applications. Key features include:
1. Output Voltage: Typically available in fixed output voltages (e.g., 3.3V, 5V) or adjustable.
2. Low Dropout Voltage: Ensures efficient operation with a drop-out typically around 0.5V at full load.
3. High Output Current: Capable of providing up to 1A of output current.
4. Thermal Protection: Includes internal thermal shutdown to prevent overheating.
5. Short Circuit Protection: Safeguards against output short circuits.
6. Low Quiescent Current: Minimizes power consumption, enhancing battery life in portable applications.
7. Wide Operating Voltage Range: Input voltage typically ranges from 5V to 15V, depending on the model.
8. Fast Transient Response: Provides stable output during load changes.
These features make the LM397MF suitable for a wide range of applications, including consumer electronics, industrial equipment, and telecommunications.

Package

The LM397MF is typically available in a Metal Can package type. This design provides improved thermal performance and reliability for voltage regulator applications.

Pinout

The LM397MF is a precision voltage reference with a pin count of 8. Its primary function is to provide a stable output voltage, typically 1.2V, with low temperature coefficients and high accuracy.
The pin configuration is as follows:
1. Vin: Input voltage
2. Vout: Output voltage (reference)
3. Adjust: Allows for output voltage adjustment
4. GND: Ground
5. NC: No connection
6. NC: No connection
7. NC: No connection
8. NC: No connection
The LM397MF is commonly used in precision applications where a stable reference voltage is critical, such as in analog-to-digital converters, voltage regulators, and other circuitry requiring accurate voltage references.

Manufacturer

The LM397MF is manufactured by Texas Instruments (TI), a leading global semiconductor company. Texas Instruments designs and produces a wide range of analog, embedded processing, and digital signal processing (DSP) integrated circuits. Founded in 1930, TI is known for its innovations in various sectors, including automotive, industrial, communications, and consumer electronics. The company focuses on providing high-performance products and solutions that enable customers to create efficient and effective electronic designs. TI is also recognized for its commitment to research and development, ensuring that it remains at the forefront of technology in the semiconductor industry.

Application

The LM397MF is a low-dropout (LDO) voltage regulator primarily used in applications requiring stable output voltage with minimal input-output voltage differential. Common application areas include power management in portable devices, battery-powered systems, instrumentation, and telecommunications. It is also suitable for use in sensitive analog circuits and microcontroller power supplies, ensuring consistent performance in noise-sensitive environments.

Equivalent

Equivalent products to the LM397MF voltage regulator include the LM317, LM7812, and LM7815, depending on the specific voltage and current requirements. Other alternatives are the MIC2941 and LT1084, which offer similar adjustable voltage regulation features. It's important to check specifications like input/output voltage range, current capacity, and package type for compatibility.