LM431SBCMFX

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LM431SBCMFX

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IC VREF SHUNT ADJ 1% SOT23F-3

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Attribut Wert
Part Status Obsolete
Reference Type Shunt
Output Type Adjustable
Voltage - Output (Min/Fixed) 2.495V
Current - Output 100 mA
Tolerance ±1%
Temperature Coefficient 50ppm/°C Typical
Operating Temperature -25°C ~ 85°C (TA)
Mounting Type Surface Mount
Package / Case SOT-23-3 Flat Leads
Supplier Device Package SOT-23F-3
Base Product Number LM431
Current - Cathode 1 mA
Voltage - Output (Max) 36 V

Übersicht

Description

The LM431SBCMFX is a programmable shunt voltage reference and comparator designed for precision voltage regulation applications. It operates over a wide input voltage range of 2.5V to 36V and provides an adjustable output voltage from 1.24V to 36V, making it suitable for various circuit designs, including power supplies and regulation circuits.
The device features low output impedance and high accuracy, with a typical temperature coefficient of 20 ppm/°C. Its current sink capability ranges from 1 mA to 100 mA, ensuring reliable performance under different load conditions. The LM431SBCMFX can also be employed in feedback loops to enhance voltage regulation in switch-mode power supplies.
Encapsulated in a compact SOT-23 package, it is ideal for space-constrained applications. The LM431 is widely used in consumer electronics, industrial equipment, and telecommunications due to its versatility and reliability. Overall, it is a popular choice for engineers seeking an efficient and precise voltage reference solution.

Equivalent

The LM431SBCMFX is a programmable shunt voltage reference. Equivalent products include the TL431, MCP1501, and TLV431. These alternatives offer similar functionality in voltage regulation and reference applications. Always check specific datasheets for parameters like voltage range, temperature stability, and current capabilities to ensure compatibility.

Features

The LM431SBCMFX is a programmable voltage reference and adjustable shunt regulator. Key features include:
1. Output Voltage Range: Adjustable from 1.24V to 37V, allowing for flexibility in various applications.
2. Temperature Coefficient: Low temperature coefficient of 0.2%/°C, ensuring stable performance across temperature variations.
3. Circuit Configurations: Can be used in series or shunt configurations, making it versatile for different designs.
4. Low Output Impedance: Provides low output impedance for improved load regulation.
5. High Accuracy: Offers a typical initial accuracy of ±1%, ensuring precise voltage regulation.
6. Operating Current: Typically operates at a current of 1 mA to 100 mA, accommodating various load requirements.
7. Pinout: Standard 3-pin configuration for easy integration into circuits.
8. Applications: Suitable for power supplies, voltage regulation, battery chargers, and as a reference voltage in analog circuits.
This device is commonly used in consumer electronics, automotive, and industrial applications.

Pinout

The LM431SBCMFX is a precision programmable shunt voltage reference with a pin count of 3.
### Pin Functions:
1. Ref (Reference): This pin is used to connect to an external resistor divider to set the output voltage. It provides a reference voltage of 1.24V.
2. Cathode (K): This is the output pin where the regulated voltage is provided. It connects to the load or application circuit.
3. Anode (A): This pin is connected to ground or the negative supply voltage. It completes the circuit and is typically grounded.
The LM431 is widely used for voltage regulation, error amplification, and as a reference voltage in various power supply applications.

Manufacturer

The LM431SBCMFX is manufactured by Texas Instruments (TI), a prominent semiconductor company based in the United States. Founded in 1930, Texas Instruments is well-known for its innovations in analog and embedded processing technologies. The company designs and manufactures a wide range of electronic components, including integrated circuits, processors, and microcontrollers, catering to various sectors such as automotive, industrial, communications, and consumer electronics. TI is recognized for its commitment to quality and performance in the electronic components market, making it a key player in the global semiconductor industry. The LM431, specifically, is a programmable shunt voltage reference, widely used in various applications requiring precise voltage regulation.

Application

The LM431SBCMFX is a programmable shunt voltage reference used in various applications, including power supplies, voltage regulation circuits, and analog-to-digital converters. It provides precise voltage references for feedback loops in switching regulators, enhances stability in linear power supplies, and is utilized in battery management systems. Additionally, it can be found in precision measurement instruments, sensor applications, and as a part of voltage calibration systems. Its versatility and accuracy make it suitable for both consumer electronics and industrial applications.

Package

The LM431SBCMFX is packaged in a surface-mount Small Outline Integrated Circuit (SOIC) format. Specifically, it typically comes in an 8-lead SOIC package.

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