LM385Z-2.5/NOPB

Overview

Product Category

The LM385Z-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 LM385Z-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.
• Temperature Stability: This voltage reference exhibits excellent temperature stability over a wide range of operating conditions.
• Low Output Impedance: The LM385Z-2.5/NOPB has a low output impedance, allowing it to drive loads efficiently.

Package

The LM385Z-2.5/NOPB is available in a TO-92 package, which is a small plastic package with three leads.

Essence

The essence of the LM385Z-2.5/NOPB lies in its ability to provide a precise and stable voltage reference for electronic circuits.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a specific quantity of LM385Z-2.5/NOPB devices per package.

Specifications

• Output Voltage: 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)

Pin Configuration

The LM385Z-2.5/NOPB has three pins:

1. Vout: Output pin, connected to the load or circuit requiring a stable 2.5V reference voltage.
2. Vin: Input pin, connected to the supply voltage source.
3. GND: Ground pin, connected to the common ground of the circuit.

Functional Features

• Voltage Regulation: The LM385Z-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 consumes low power, making it suitable for battery-powered applications where energy efficiency is crucial.
• Temperature Stability: This voltage reference exhibits excellent temperature stability, ensuring accurate performance across varying temperatures.
• Low Output Impedance: The LM385Z-2.5/NOPB has a low output impedance, allowing it to drive loads efficiently without significant voltage drop.

Advantages and Disadvantages

Advantages

• Precise and Stable Voltage Reference
• Low Power Consumption
• Wide Operating Temperature Range
• Small Package Size

Disadvantages

• Limited Output Voltage Options
• Requires External Components for Specific Applications

Working Principles

The LM385Z-2.5/NOPB utilizes a bandgap voltage reference circuit to generate a stable 2.5V output voltage. It compensates for temperature variations by employing a temperature-dependent current that cancels out the temperature coefficient of the base-emitter voltage of a bipolar transistor. This ensures a consistent output voltage over a wide range of operating temperatures.

Detailed Application Field Plans

The LM385Z-2.5/NOPB finds applications in various electronic systems, including:

1. Battery-Powered Devices: It provides a stable voltage reference for battery-powered devices such as portable audio players, handheld instruments, and remote sensors.
2. Precision Analog Circuits: The LM385Z-2.5/NOPB is used in precision analog circuits like digital-to-analog converters (DACs), analog-to-digital converters (ADCs), and operational amplifiers (op-amps) to ensure accurate voltage references.
3. Voltage Monitoring: It can be employed in voltage monitoring circuits to detect and control overvoltage or undervoltage conditions, protecting sensitive components from damage.

Detailed and Complete Alternative Models

1. LM4040-N: This series offers various output voltage options with similar characteristics to the LM385Z-2.5/NOPB.
2. LT1004: These devices provide precise voltage references with low temperature drift and excellent long-term stability.
3. REF30xx: This family of voltage references offers high accuracy and low power consumption for demanding applications.

In conclusion, the LM385Z-2.5/NOPB is a voltage reference device that provides a stable and accurate 2.5V reference voltage. Its low power consumption, temperature stability, and small package size make it suitable for a wide range of electronic applications. However, it has limited output voltage options and may require additional external components for specific applications. There are alternative models available with similar characteristics for different application requirements.