LM385BDE4-2-5

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Reference

Characteristics: - Low voltage reference - Precision output voltage - Low temperature coefficient - Low power consumption

Package: SOT-23-3

Essence: The LM385BDE4-2-5 is a low voltage 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 LM385BDE4-2-5 is available in a SOT-23-3 package, which is a small surface mount package. It is typically sold in reels or tubes containing multiple units.

Specifications

The LM385BDE4-2-5 has the following specifications:

• Output Voltage: 2.5V
• Initial Accuracy: ±0.5%
• Temperature Coefficient: 20ppm/°C
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 1.9V to 5.5V
• Quiescent Current: 120µA

Pin Configuration

The LM385BDE4-2-5 has three pins arranged as follows:

```

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| | --| V+ | --| | --| V- | |____| ```

Pin 1 (V+): Positive supply voltage input

Pin 2 (V-): Ground reference

Pin 3: Output voltage

Functional Features

• Precise Voltage Reference: The LM385BDE4-2-5 provides a stable and accurate output voltage of 2.5V, making it suitable for applications requiring a precise reference voltage.

• Low Temperature Coefficient: With a temperature coefficient of 20ppm/°C, the LM385BDE4-2-5 maintains its accuracy over a wide temperature range.

• Low Power Consumption: The quiescent current of only 120µA ensures minimal power consumption, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Precise and stable output voltage - Low temperature coefficient - Small package size - Low power consumption

Disadvantages: - Limited output voltage options (only 2.5V in this model) - Not suitable for high voltage applications

Working Principles

The LM385BDE4-2-5 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 varying environmental conditions.

Detailed Application Field Plans

The LM385BDE4-2-5 finds applications in various electronic systems where a precise voltage reference is required. Some common application areas include:

1. Analog-to-Digital Converters (ADCs): The LM385BDE4-2-5 can be used as a reference voltage for ADCs to ensure accurate conversion of analog signals.

2. Voltage Regulators: It can serve as a stable reference voltage for voltage regulators, improving their overall performance and stability.

3. Sensor Calibration: Many sensors require a precise reference voltage for calibration purposes. The LM385BDE4-2-5 can provide this reference voltage reliably.

4. Battery Management Systems: In battery-powered devices, the LM385BDE4-2-5 can be used to monitor battery voltage levels accurately.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM385BDE4-2-5 are:

1. LM4040: This series of voltage references offers various output voltage options and is available in different package types.

2. LT6654: It provides high precision and low drift voltage reference with a wide operating temperature range.

3. REF30xx: These voltage references offer low dropout voltage and excellent line regulation.

4. MAX619: This series of voltage references provides low power consumption and high accuracy.

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

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