LM385BM-2.5/NOPB

Product Overview

Category

The LM385BM-2.5/NOPB belongs to the category of voltage references.

Use

It is commonly used as a precision shunt regulator in various electronic circuits.

Characteristics

• Voltage Reference: The LM385BM-2.5/NOPB provides a stable and accurate voltage reference of 2.5V.
• Low Power Consumption: It operates with low power consumption, making it suitable for battery-powered applications.
• High Precision: The LM385BM-2.5/NOPB offers high precision voltage regulation, ensuring reliable performance.
• Temperature Stability: It exhibits excellent temperature stability, maintaining its accuracy over a wide range of temperatures.
• Low Output Impedance: The device has a low output impedance, enabling it to drive loads efficiently.

Package

The LM385BM-2.5/NOPB is available in a small outline package (SOT-23) which facilitates easy integration into compact circuit designs.

Essence

The essence of the LM385BM-2.5/NOPB lies in its ability to provide a stable and precise voltage reference, ensuring consistent performance in electronic circuits.

Packaging/Quantity

The LM385BM-2.5/NOPB is typically packaged in reels or tubes, containing a specified quantity of devices per package.

Specifications

• Voltage Reference: 2.5V
• Initial Accuracy: ±0.5%
• Temperature Coefficient: 100 ppm/°C
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 1.9V to 5.5V
• Quiescent Current: 120 µA (typical)

Detailed Pin Configuration

The LM385BM-2.5/NOPB features three pins:

1. Vout: Output pin, provides the stable 2.5V reference voltage.
2. GND: Ground pin, connected to the common ground of the circuit.
3. Vin: Input pin, receives the supply voltage for the device.

Functional Features

• Voltage Regulation: The LM385BM-2.5/NOPB maintains a constant output voltage of 2.5V, regardless of changes in the input voltage or load conditions.
• Low Power Consumption: It operates with low quiescent current, minimizing power consumption and extending battery life in portable applications.
• Temperature Stability: The device exhibits excellent temperature stability, ensuring consistent performance across varying environmental conditions.
• Low Output Impedance: With its low output impedance, the LM385BM-2.5/NOPB can effectively drive loads without significant voltage drop.

Advantages and Disadvantages

Advantages

• High precision and accuracy
• Wide operating temperature range
• Low power consumption
• Small package size for space-constrained designs
• Excellent temperature stability

Disadvantages

• Limited output voltage options (fixed at 2.5V)
• Not suitable for applications requiring adjustable voltage references

Working Principles

The LM385BM-2.5/NOPB utilizes a bandgap voltage reference circuit to generate a stable 2.5V output. This circuit compensates for temperature variations, ensuring accurate voltage regulation over a wide temperature range. By comparing the bandgap voltage to an internal reference, the device adjusts its output voltage to maintain a constant 2.5V.

Detailed Application Field Plans

The LM385BM-2.5/NOPB finds application in various electronic systems that require a precise and stable voltage reference. Some common application fields include:

1. Analog-to-Digital Converters (ADCs): The LM385BM-2.5/NOPB can be used as a reference voltage for ADCs, ensuring accurate conversion of analog signals.
2. Voltage Regulators: It can serve as a voltage reference for linear voltage regulators, improving their precision and stability.
3. Sensor Circuits: The LM385BM-2.5/NOPB is suitable for sensor circuits that require precise voltage references to ensure accurate measurements.
4. Battery-Powered Devices: Its low power consumption makes it ideal for battery-powered devices such as portable instruments, sensors, and data loggers.

Detailed and Complete Alternative Models

1. LM4040AIM3-2.5/NOPB: This device offers the same 2.5V voltage reference with improved initial accuracy and lower temperature coefficient.
2. LT1004CZ-2.5#PBF: It provides a 2.5V voltage reference with higher initial accuracy and lower output noise compared to the LM385BM-2.5/NOPB.
3. REF3025AIDBZT: This alternative model features a 2.5V voltage reference with ultra-low quiescent current and excellent long-term stability.

These alternative models offer similar functionality to the LM