LM431BIM3X/NOPB

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage References

Characteristics: - Adjustable Precision Shunt Regulator - Low Output Noise - High Accuracy - Wide Operating Voltage Range - Low Temperature Drift - Low Dynamic Impedance - Low Quiescent Current

Package: SOT-23-3

Essence: The LM431BIM3X/NOPB is a precision adjustable shunt regulator that can be used to make a stable reference voltage. It is commonly used in various electronic circuits where a stable voltage reference is required.

Packaging/Quantity: The LM431BIM3X/NOPB is available in a SOT-23-3 package. It is typically sold in reels or tubes containing a specific quantity of units, such as 2500 pieces per reel.

Specifications

• Reference Voltage: Adjustable from 2.5V to 36V
• Initial Accuracy: ±1%
• Temperature Coefficient: 50 ppm/°C
• Operating Voltage Range: 2.5V to 36V
• Quiescent Current: 1.0 mA (Typical)
• Dynamic Impedance: 0.22 Ω (Typical)
• Output Noise Voltage: 0.04 μV/√Hz (Typical)

Pin Configuration

The LM431BIM3X/NOPB has three pins:

1. Anode (A): Connected to the positive supply voltage.
2. Cathode (K): Connected to the load or ground.
3. Reference (R): Provides the stable reference voltage.

Functional Features

• Adjustable Output Voltage: The LM431BIM3X/NOPB allows the user to adjust the output voltage according to their requirements.
• Precision Voltage Reference: It provides a stable and accurate reference voltage for various applications.
• Low Output Noise: The LM431BIM3X/NOPB has low output noise, making it suitable for noise-sensitive circuits.
• Wide Operating Voltage Range: It can operate within a wide voltage range, making it versatile for different applications.
• Low Temperature Drift: The LM431BIM3X/NOPB exhibits low temperature drift, ensuring stability over varying temperatures.
• Low Quiescent Current: It consumes low quiescent current, minimizing power consumption.

Advantages

• High accuracy and stability
• Adjustable output voltage
• Low output noise
• Wide operating voltage range
• Low temperature drift
• Low quiescent current

Disadvantages

• Limited maximum output current capability
• Requires external resistors for precise voltage adjustment

Working Principles

The LM431BIM3X/NOPB operates as a shunt regulator. It compares the reference voltage at the Reference (R) pin with the voltage across the cathode (K) and anode (A) pins. By adjusting the resistance connected to the Reference (R) pin, the output voltage can be set to the desired value. The LM431BIM3X/NOPB maintains a constant voltage drop between the cathode (K) and anode (A) pins, providing a stable reference voltage.

Detailed Application Field Plans

The LM431BIM3X/NOPB is widely used in various electronic applications, including:

1. Voltage References: It can be used as a stable voltage reference in analog-to-digital converters, digital-to-analog converters, and other precision measurement systems.
2. Power Supplies: It is commonly used in linear power supplies to provide a stable reference voltage for regulation and control purposes.
3. Battery Charging Systems: The LM431BIM3X/NOPB can be used in battery charging circuits to monitor and control the charging voltage.
4. Audio Amplifiers: It can be employed in audio amplifiers to provide a stable bias voltage for improved performance.

Detailed and Complete Alternative Models

Some alternative models to the LM431BIM3X/NOPB include:

1. TL431: Similar adjustable precision shunt regulator with different package options.
2. LM4040: Precision voltage reference with fixed output voltage options.
3. LT1009: Precision reference voltage source with low temperature drift.

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

Word count: 511 words