LM4128BMFX-2.0/NOPB

Product Overview

Category

The LM4128BMFX-2.0/NOPB 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 LM4128BMFX-2.0/NOPB is available in a small SOT-23 package.

Essence

This product provides a stable and accurate voltage reference, ensuring precise voltage levels in electronic circuits.

Packaging/Quantity

The LM4128BMFX-2.0/NOPB is typically packaged in reels or tubes, with a quantity of 3000 units per reel/tube.

Specifications

• Output Voltage: 2.0V
• 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: 120µA (typical)

Detailed Pin Configuration

The LM4128BMFX-2.0/NOPB 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 for operation in low voltage systems

Advantages

• Excellent accuracy and stability ensure reliable performance in precision applications.
• Low temperature coefficient minimizes voltage variations due to temperature changes.
• Low dropout voltage enables operation in low voltage environments.
• Wide operating temperature range allows for use in extreme conditions.

Disadvantages

• Limited output voltage options (only 2.0V in this case).
• Higher initial cost compared to less precise voltage references.
• Sensitive to external noise and disturbances, requiring proper filtering and decoupling.

Working Principles

The LM4128BMFX-2.0/NOPB 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 ensures that the output voltage remains constant over a wide temperature range.

Detailed Application Field Plans

The LM4128BMFX-2.0/NOPB finds applications in various fields, including:

1. Precision measurement instruments
2. Data acquisition systems
3. Industrial control systems
4. Medical devices
5. Automotive electronics
6. Portable consumer electronics

Detailed and Complete Alternative Models

1. LM4040AIM3-2.0/NOPB: 2.0V precision shunt voltage reference
2. LT1461AIS8-2.0/NOPB: 2.0V micropower precision series voltage reference
3. REF5025AIDGKT: 2.5V precision voltage reference with low dropout voltage

These alternative models offer similar functionality and characteristics to the LM4128BMFX-2.0/NOPB, providing options for different design requirements.

In conclusion, the LM4128BMFX-2.0/NOPB is a high-precision voltage reference with excellent stability and accuracy. Its low dropout voltage and wide operating temperature range make it suitable for various electronic applications. However, designers should consider the limited output voltage options and the need for proper noise filtering.