LM4128BMF-2.5

Product Overview

Category

The LM4128BMF-2.5 belongs to the category of voltage references.

Use

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

Characteristics

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

Package

The LM4128BMF-2.5 is available in a small SOT-23 package, which is suitable for space-constrained applications.

Essence

The essence of LM4128BMF-2.5 lies in its ability to provide a stable and accurate voltage reference, ensuring reliable performance of electronic systems.

Packaging/Quantity

The LM4128BMF-2.5 is typically packaged in reels or tubes, with a quantity of 3000 units per reel/tube.

Specifications

• Output Voltage: 2.5V
• Initial Accuracy: ±0.1%
• Temperature Coefficient: 50ppm/°C
• Dropout Voltage: 200mV (typical)
• Quiescent Current: 120µA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM4128BMF-2.5 has three pins:

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

Functional Features

• High precision voltage reference
• Low power consumption
• Stable output voltage over temperature and time
• Fast response to load changes
• Low dropout voltage allows operation with low input voltages

Advantages

• Excellent accuracy and stability
• Low temperature coefficient ensures minimal voltage drift
• Low power consumption extends battery life in portable devices
• Small package size enables use in space-constrained applications
• Wide operating temperature range allows for versatile usage

Disadvantages

• Limited output voltage options (only 2.5V in this case)
• Higher cost compared to less precise voltage references
• Sensitivity to external noise and disturbances

Working Principles

The LM4128BMF-2.5 utilizes a bandgap reference circuit 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. This design ensures accurate and stable output voltage over a wide temperature range.

Detailed Application Field Plans

The LM4128BMF-2.5 finds application in various fields, including:

1. Precision analog circuits
2. Data acquisition systems
3. Industrial control systems
4. Portable electronic devices
5. Medical equipment
6. Automotive electronics
7. Communication systems

Its high accuracy and stability make it suitable for any application that requires a reliable voltage reference.

Detailed and Complete Alternative Models

1. LM4040: A series of precision voltage references with different output voltages and package options.
2. LT1021: Ultra-high precision voltage reference with exceptional long-term stability.
3. REF50xx: High-precision voltage references with low dropout voltage and excellent line regulation.

These alternative models offer similar functionality and can be considered based on specific requirements and preferences.

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