LMV431CZ/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Reference

Characteristics: - Low voltage reference - Precision output voltage - Adjustable output voltage - Low quiescent current - Wide operating temperature range

Package: TO-92

Essence: The LMV431CZ/NOPB is a precision voltage reference IC that provides a stable and accurate output voltage. It is commonly used in various electronic circuits where a precise voltage reference is required.

Packaging/Quantity: The LMV431CZ/NOPB is available in a TO-92 package, which contains one IC per package.

Specifications

• Output Voltage Range: 1.24V to 6V
• Initial Accuracy: ±0.5%
• Quiescent Current: 1.5mA (max)
• Operating Temperature Range: -40°C to +85°C
• Line Regulation: 0.2% (typ)
• Load Regulation: 0.4% (typ)
• Reference Input Current: 0.5μA (typ)

Detailed Pin Configuration

The LMV431CZ/NOPB has three pins:

1. Anode (A): Connected to the positive supply voltage.
2. Cathode (K): Connected to the load or circuitry requiring a stable reference voltage.
3. Reference (REF): Provides the stable and accurate output voltage.

Functional Features

• Adjustable Output Voltage: The LMV431CZ/NOPB allows the user to adjust the output voltage within the specified range.
• Low Quiescent Current: The IC consumes very low current when not actively providing a reference voltage, making it suitable for low-power applications.
• High Precision: The LMV431CZ/NOPB offers high accuracy and stability in providing a reference voltage.
• Wide Operating Temperature Range: It can operate reliably in a wide range of temperatures, making it suitable for various environments.

Advantages and Disadvantages

Advantages: - Precise and stable output voltage - Adjustable output voltage - Low quiescent current consumption - Wide operating temperature range

Disadvantages: - Limited output voltage range (1.24V to 6V) - Requires external components for certain applications

Working Principles

The LMV431CZ/NOPB is based on the principle of a shunt regulator. It compares the reference voltage at the REF pin with an internal voltage reference and adjusts the current flowing through the cathode to maintain a constant output voltage. By adjusting the resistance connected to the cathode, the output voltage can be adjusted within the specified range.

Detailed Application Field Plans

The LMV431CZ/NOPB finds applications in various fields, including:

1. Voltage Regulation: It can be used as a precise voltage reference in voltage regulators to ensure stable and accurate output voltages.
2. Power Management: The IC can be employed in power management circuits to provide a stable reference voltage for controlling power supply circuits.
3. Sensor Calibration: It is useful in sensor calibration circuits where a precise reference voltage is required for accurate sensor measurements.
4. Battery Charging: The LMV431CZ/NOPB can be utilized in battery charging circuits to maintain a constant voltage during the charging process.

Detailed and Complete Alternative Models

Some alternative models to the LMV431CZ/NOPB include:

1. TL431: A similar shunt regulator IC with adjustable output voltage and comparable specifications.
2. LM4040: A precision voltage reference IC available in different package options and with various output voltage options.
3. LT1236: A high-precision voltage reference IC with low temperature coefficient and excellent long-term stability.

These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.

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