LM385PWRE4-1-2

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 LM385PWRE4-1-2 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 reference voltage is required.

Packaging/Quantity: The LM385PWRE4-1-2 is available in a SOT-23-3 package, which is a small surface mount package. It is typically sold in reels or tubes containing a specified quantity of ICs.

Specifications

The LM385PWRE4-1-2 has the following specifications:

• Output Voltage: 1.225V
• Initial Accuracy: ±0.5%
• Temperature Coefficient: 20ppm/°C
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 2.7V to 7V
• Quiescent Current: 120µA

Pin Configuration

The LM385PWRE4-1-2 has three pins arranged as follows:

```

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

Pin 1: V+ (Input voltage) Pin 2: GND (Ground) Pin 3: VOUT (Output voltage)

Functional Features

• Stable and accurate output voltage
• Low temperature coefficient ensures minimal drift over a wide temperature range
• Low power consumption makes it suitable for battery-powered applications
• Wide supply voltage range allows flexibility in different circuit designs

Advantages

• Precise and stable output voltage
• Low power consumption
• Small package size for space-constrained applications
• Wide operating temperature range

Disadvantages

• Limited output voltage options (only 1.225V)
• Not suitable for high voltage applications

Working Principles

The LM385PWRE4-1-2 is based on a bandgap reference circuit that generates a stable and accurate voltage reference. It utilizes temperature-compensated components to minimize the effect of temperature variations on the output voltage. The IC operates by comparing the reference voltage with an external voltage source and adjusting its internal circuitry to maintain a constant output voltage.

Detailed Application Field Plans

The LM385PWRE4-1-2 can be used in various electronic circuits where a precise and stable reference voltage is required. Some common application fields include:

1. Analog-to-Digital Converters (ADCs): The LM385PWRE4-1-2 can provide a reliable reference voltage for ADCs, ensuring accurate conversion of analog signals.

2. Voltage Regulators: It can be used as a reference voltage for voltage regulators, helping to maintain a stable output voltage.

3. Sensor Calibration: The LM385PWRE4-1-2 can be employed in sensor calibration circuits to provide a known and stable reference voltage for accurate sensor measurements.

4. Battery Management Systems: It can be utilized in battery management systems to monitor and control battery charging and discharging processes accurately.

Detailed and Complete Alternative Models

Some alternative models to the LM385PWRE4-1-2 include:

1. LM4040: This series offers a wide range of output voltages and package options.
2. LT1004: It provides high precision and low noise performance.
3. REF30xx: These voltage references offer low dropout voltage and high accuracy.

These alternative models provide similar functionality and can be considered based on specific requirements and design constraints.

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