LM285LP-1-2

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Reference

Characteristics: - Low dropout voltage - High accuracy - Low quiescent current - Wide operating temperature range

Package: TO-92

Essence: The LM285LP-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 voltage reference is required.

Packaging/Quantity: The LM285LP-1-2 is typically available in a TO-92 package, which contains one IC per package.

Specifications

The LM285LP-1-2 has the following specifications:

• Output Voltage: 1.235V
• Dropout Voltage: 0.2V
• Quiescent Current: 120µA
• Temperature Range: -40°C to +85°C
• Line Regulation: 0.02%/V
• Load Regulation: 0.04%/mA
• Initial Accuracy: ±1%

Detailed Pin Configuration

The LM285LP-1-2 has three pins:

1. Vout: Output Voltage Pin
2. GND: Ground Pin
3. Vin: Input Voltage Pin

Functional Features

• Low Dropout Voltage: The LM285LP-1-2 has a low dropout voltage of only 0.2V, allowing it to operate efficiently even with small input-output differentials.
• High Accuracy: With an initial accuracy of ±1%, the LM285LP-1-2 provides a precise and stable output voltage reference.
• Low Quiescent Current: The IC has a low quiescent current of 120µA, making it suitable for battery-powered applications.
• Wide Operating Temperature Range: The LM285LP-1-2 can operate within a wide temperature range of -40°C to +85°C, making it suitable for various environmental conditions.

Advantages and Disadvantages

Advantages: - Precise and stable output voltage reference - Low dropout voltage - Low quiescent current - Wide operating temperature range

Disadvantages: - Limited output voltage options (1.235V in this case) - Requires external components for proper operation

Working Principles

The LM285LP-1-2 is based on bandgap voltage reference technology. It utilizes a combination of bipolar and CMOS transistor circuits to generate a stable reference voltage. The IC compensates for temperature variations and provides a precise output voltage regardless of changes in input voltage or load conditions.

Detailed Application Field Plans

The LM285LP-1-2 can be used in various applications that require a stable and accurate voltage reference. Some common application fields include:

1. Analog-to-Digital Converters (ADCs): The IC can be used as a reference voltage for ADCs, ensuring accurate conversion of analog signals.
2. Voltage Regulators: It can serve as a reference voltage for voltage regulators, maintaining a stable output voltage.
3. Battery-Powered Devices: The low quiescent current and wide operating temperature range make it suitable for battery-powered devices such as portable electronics and IoT devices.
4. Precision Instrumentation: The LM285LP-1-2 can be used in precision instrumentation equipment where accurate voltage references are crucial.

Detailed and Complete Alternative Models

Some alternative models to the LM285LP-1-2 include:

1. LM4040: A series of precision voltage references with different output voltage options.
2. LT1021: High-precision voltage reference ICs with low temperature drift.
3. REF30xx: Voltage reference ICs with low dropout voltage and high accuracy.

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

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