LM4128CMFX-3.3

Product Overview

Category

The LM4128CMFX-3.3 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 LM4128CMFX-3.3 is available in a small SOT-23 package.

Essence

This voltage reference provides a stable and accurate voltage output for precise circuit operation.

Packaging/Quantity

The LM4128CMFX-3.3 is typically packaged in reels or tubes, with a quantity of 3000 units per reel/tube.

Specifications

• Output Voltage: 3.3V
• Initial Accuracy: ±0.1%
• Temperature Coefficient: 50ppm/°C
• Dropout Voltage: 200mV (typical)
• Operating Temperature Range: -40°C to +125°C
• Supply Voltage Range: 2.7V to 12V
• Quiescent Current: 80µA (typical)

Detailed Pin Configuration

The LM4128CMFX-3.3 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 a wide temperature range
• Low dropout voltage allows operation with low input voltages
• Excellent line and load regulation

Advantages and Disadvantages

Advantages

• High accuracy and stability ensure reliable circuit performance.
• Low temperature coefficient minimizes voltage variations with temperature changes.
• Low dropout voltage enables operation with low input voltages.
• Wide operating temperature range allows usage in various environments.

Disadvantages

• Limited output voltage options (only 3.3V).
• Higher initial cost compared to some other voltage references.

Working Principles

The LM4128CMFX-3.3 utilizes bandgap reference technology to generate a stable and accurate voltage output. It compensates for temperature variations by employing a proportional-to-absolute-temperature (PTAT) current source and a negative temperature coefficient (NTC) resistor. This ensures that the output voltage remains constant over a wide temperature range.

Detailed Application Field Plans

The LM4128CMFX-3.3 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
6. Medical instruments
7. Automotive electronics

Its high accuracy and stability make it suitable for any application requiring precise voltage references.

Detailed and Complete Alternative Models

Some alternative models to the LM4128CMFX-3.3 include:

1. LM4040 series by Texas Instruments
2. LT1236 series by Analog Devices
3. MAX6126 series by Maxim Integrated
4. REF30xx series by Texas Instruments
5. ADR43x series by Analog Devices

These alternatives offer similar functionality and can be considered based on specific requirements and availability.

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