LM4051AEX3-1.2+T

Product Overview

Category

The LM4051AEX3-1.2+T belongs to the category of voltage references.

Use

It is commonly used as a precision voltage reference in various electronic circuits.

Characteristics

• High accuracy and stability
• Low temperature coefficient
• Low dropout voltage
• Wide operating temperature range

Package

The LM4051AEX3-1.2+T is available in a small SOT-23 package, which is suitable for surface mount applications.

Essence

The essence of LM4051AEX3-1.2+T lies in its ability to provide a precise and stable voltage reference, ensuring accurate performance of electronic systems.

Packaging/Quantity

The LM4051AEX3-1.2+T is typically packaged in reels or tubes, with a quantity of 3000 units per reel/tube.

Specifications

• Output Voltage: 1.2V
• Initial Accuracy: ±0.5%
• Temperature Coefficient: 50ppm/°C
• Dropout Voltage: 200mV (typical)
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 2.7V to 10V
• Quiescent Current: 60µA (typical)

Detailed Pin Configuration

The LM4051AEX3-1.2+T has three pins:

1. VOUT: Output voltage pin.
2. GND: Ground pin.
3. VIN: Input voltage pin.

Functional Features

• Precise and stable output voltage reference.
• Low dropout voltage allows operation in low-power applications.
• Wide operating temperature range enables usage in extreme environments.
• Low quiescent current minimizes power consumption.

Advantages and Disadvantages

Advantages

• High accuracy and stability ensure reliable performance.
• Low temperature coefficient maintains consistent output voltage over a wide temperature range.
• Small package size allows for space-saving designs.
• Low dropout voltage enables operation with low input voltages.

Disadvantages

• Limited output voltage options (only 1.2V in this case).
• Higher initial cost compared to less precise voltage references.

Working Principles

The LM4051AEX3-1.2+T utilizes bandgap reference technology to generate a stable voltage reference. It compensates for temperature variations by employing a proportional-to-absolute-temperature (PTAT) current source and a negative temperature coefficient (NTC) resistor. These elements work together to maintain a constant output voltage despite changes in temperature and supply voltage.

Detailed Application Field Plans

The LM4051AEX3-1.2+T finds applications in various fields, including:

1. Precision analog circuits
2. Data acquisition systems
3. Industrial control systems
4. Portable electronic devices
5. Battery-powered equipment

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LM4051AEX3-1.2+T are:

1. LM4040AIZ-1.2: Similar voltage reference with a different package type (TO-92).
2. LT1236ACS8-1.2: Precision shunt voltage reference with higher accuracy.
3. REF102CU: Ultra-high precision voltage reference with lower temperature coefficient.

These alternative models provide similar functionality but may have different specifications or package options.

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