LM285DRG4-1-2

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Reference

Characteristics: - Low dropout voltage - High accuracy - Low temperature coefficient - Low quiescent current

Package: SOIC-8

Essence: The LM285DRG4-1-2 is a precision voltage reference IC that provides a stable and accurate output voltage. It is commonly used in various electronic circuits where a precise reference voltage is required.

Packaging/Quantity: The LM285DRG4-1-2 is typically available in reels of 2500 units.

Specifications

The LM285DRG4-1-2 has the following specifications:

• Output Voltage: 1.225V
• Initial Accuracy: ±0.5%
• Temperature Coefficient: 50ppm/°C
• Dropout Voltage: 60mV
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM285DRG4-1-2 has an SOIC-8 package with the following pin configuration:

```

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| | | VOUT | |___________| | | | GND | |___________| | | | NC | |___________| | | | VIN | |___________| ```

Functional Features

• Low Dropout Voltage: The LM285DRG4-1-2 has a low dropout voltage of only 60mV, allowing it to operate efficiently even when the input voltage is close to the desired output voltage.
• High Accuracy: With an initial accuracy of ±0.5%, the LM285DRG4-1-2 provides a precise and stable reference voltage.
• Low Temperature Coefficient: The temperature coefficient of 50ppm/°C ensures that the output voltage remains relatively constant over a wide range of temperatures.
• Low Quiescent Current: The LM285DRG4-1-2 has a low quiescent current of 120µA, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Precise and stable output voltage - Low dropout voltage - Low temperature coefficient - Low quiescent current

Disadvantages: - Limited output voltage options (only 1.225V)

Working Principles

The LM285DRG4-1-2 is based on bandgap voltage reference technology. It utilizes a combination of bipolar and CMOS transistors to generate a stable reference voltage. The internal circuitry compensates for temperature variations, ensuring accurate output voltage even in different operating conditions.

Detailed Application Field Plans

The LM285DRG4-1-2 can be used in various applications, including:

1. Precision Analog Circuits: It is commonly used as a reference voltage source in precision analog circuits such as data converters, amplifiers, and sensors.
2. Battery-Powered Devices: Due to its low quiescent current and low dropout voltage, the LM285DRG4-1-2 is suitable for battery-powered devices where power efficiency is crucial.
3. Voltage Regulators: It can be used as a stable reference voltage for voltage regulators, ensuring accurate and reliable output voltage regulation.

Detailed and Complete Alternative Models

Some alternative models to the LM285DRG4-1-2 include:

1. LM4040: This series offers various output voltage options and package types, providing flexibility for different application requirements.
2. LT6654: It is a precision voltage reference with ultra-low temperature coefficient and high accuracy, suitable for demanding applications.
3. REF30xx: These voltage references offer low dropout voltage and high accuracy, making them ideal for battery-powered devices.

These alternative models provide similar functionality and can be considered based on specific application needs.

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