LM4128BMFX-3.3

Product Overview

Category

The LM4128BMFX-3.3 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 LM4128BMFX-3.3 is available in a small SOT-23 package, which is suitable for space-constrained applications.

Essence

The essence of LM4128BMFX-3.3 lies in its ability to provide a stable and accurate voltage reference, ensuring reliable performance of electronic systems.

Packaging/Quantity

The LM4128BMFX-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)
• Quiescent Current: 60µA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM4128BMFX-3.3 has three pins:

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

Functional Features

• Precise output voltage: The LM4128BMFX-3.3 provides a stable and accurate output voltage of 3.3V, ensuring reliable operation of connected circuits.
• Low dropout voltage: With a low dropout voltage of 200mV, the LM4128BMFX-3.3 can operate efficiently even when the input voltage is close to the output voltage.
• Low quiescent current: The LM4128BMFX-3.3 consumes only 60µA of quiescent current, minimizing power consumption in battery-powered applications.
• Wide operating temperature range: It can operate reliably in a wide temperature range from -40°C to +125°C, making it suitable for various environmental conditions.

Advantages and Disadvantages

Advantages

• High accuracy and stability ensure precise voltage references.
• Low dropout voltage allows efficient operation in low input-output voltage scenarios.
• Low quiescent current minimizes power consumption.
• Wide operating temperature range enables reliable performance in extreme conditions.

Disadvantages

• Limited output voltage options (only 3.3V in this case).
• SOT-23 package may not be suitable for all applications requiring voltage references.

Working Principles

The LM4128BMFX-3.3 utilizes bandgap reference technology to generate a stable and accurate voltage reference. It compensates for temperature variations and provides a constant output voltage regardless of changes in input voltage or ambient temperature.

Detailed Application Field Plans

The LM4128BMFX-3.3 finds applications in various electronic systems where a precise voltage reference is required. Some potential application fields include:

1. Analog-to-Digital Converters (ADCs)
2. Digital-to-Analog Converters (DACs)
3. Voltage regulators
4. Battery management systems
5. Precision instrumentation
6. Sensor interfaces
7. Communication systems

Detailed and Complete Alternative Models

1. LM4040: A series of precision voltage references with different output voltage options.
2. LT6654: Ultra-precision voltage references with extremely low temperature coefficients.
3. REF50xx: High-accuracy voltage references with low dropout voltage and low quiescent current.

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

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