LM4040C25QDBZRG4

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Reference

Characteristics: - Precision voltage reference - Low dropout voltage - High accuracy and stability - Wide operating temperature range - Small package size - Low power consumption

Package: SOT-23 (Small Outline Transistor 23)

Essence: The LM4040C25QDBZRG4 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 LM4040C25QDBZRG4 is available in a reel packaging with 3000 units per reel.

Specifications

• Output Voltage: 2.5V
• Initial Accuracy: ±0.1%
• Temperature Coefficient: ±50ppm/°C
• Dropout Voltage: 60mV (typical)
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 2.7V to 10V
• Quiescent Current: 60µA (typical)

Detailed Pin Configuration

The LM4040C25QDBZRG4 has three pins:

1. VOUT: Output pin, provides the stable 2.5V reference voltage.
2. GND: Ground pin, connected to the common ground of the circuit.
3. VIN: Input pin, receives the supply voltage for the IC.

Functional Features

• High precision: The LM4040C25QDBZRG4 offers a high initial accuracy of ±0.1% and a low temperature coefficient of ±50ppm/°C, ensuring a stable and precise output voltage.
• Low dropout voltage: With a typical dropout voltage of only 60mV, the IC can operate efficiently even when the input voltage is close to the output voltage.
• Wide operating temperature range: The LM4040C25QDBZRG4 can function reliably in a wide temperature range from -40°C to +85°C, making it suitable for various environmental conditions.
• Low power consumption: With a quiescent current of only 60µA, the IC minimizes power consumption, making it ideal for battery-powered applications.

Advantages and Disadvantages

Advantages: - High accuracy and stability - Small package size - Wide operating temperature range - Low power consumption

Disadvantages: - Limited output voltage options (only 2.5V) - Not suitable for high-current applications

Working Principles

The LM4040C25QDBZRG4 utilizes a bandgap reference circuit to generate a stable and accurate output voltage. It compensates for temperature variations by using a temperature-dependent current source and a voltage divider network. This ensures that the output voltage remains constant over a wide temperature range.

Detailed Application Field Plans

The LM4040C25QDBZRG4 finds applications in various fields, including:

1. Precision measurement instruments: It provides a reliable voltage reference for precise measurements in devices such as multimeters and oscilloscopes.
2. Analog-to-digital converters (ADCs): The IC ensures accurate conversion by providing a stable reference voltage to the ADC.
3. Voltage regulators: It serves as a reference for voltage regulators, improving their stability and precision.
4. Sensor circuits: The LM4040C25QDBZRG4 is used in sensor circuits where a stable voltage reference is crucial for accurate sensor readings.

Detailed and Complete Alternative Models

1. LM4040AIM3-2.5/NOPB: Similar to LM4040C25QDBZRG4, but available in a different package (SOT-23-3).
2. LT1461AIS8-2.5#PBF: Precision voltage reference with an output voltage of 2.5V, available in an SOIC-8 package.
3. MAX6126AASA25+: Ultra-low noise voltage reference with a 2.5V output, offered in an SOIC-8 package.

These alternative models provide similar functionality and can be used as substitutes for the LM4040C25QDBZRG4 in various applications.

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