LM385M3-1.2/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Reference

Characteristics: - Low voltage reference - Precision output voltage of 1.2V - Low temperature coefficient - Low power consumption

Package: SOT-23

Essence: The LM385M3-1.2/NOPB is a low voltage precision voltage reference IC that provides a stable and accurate output voltage of 1.2V. It is commonly used in various electronic circuits where a precise voltage reference is required.

Packaging/Quantity: The LM385M3-1.2/NOPB is available in a SOT-23 package, which is a small surface-mount package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Output Voltage: 1.2V ± 0.5%
• Temperature Coefficient: 100 ppm/°C (maximum)
• Supply Voltage Range: 2.7V to 30V
• Quiescent Current: 120 µA (maximum)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM385M3-1.2/NOPB has three pins:

1. Vout: Output pin, connected to the load or circuit requiring a stable 1.2V reference voltage.
2. GND: Ground pin, connected to the common ground of the circuit.
3. Vin: Input pin, connected to the supply voltage source.

Functional Features

• Precise Voltage Reference: The LM385M3-1.2/NOPB provides a highly accurate and stable output voltage of 1.2V, making it suitable for applications requiring precise voltage references.
• Low Temperature Coefficient: With a maximum temperature coefficient of 100 ppm/°C, the LM385M3-1.2/NOPB maintains its accuracy over a wide temperature range.
• Low Power Consumption: The IC operates with a low quiescent current of 120 µA, making it energy-efficient and suitable for battery-powered devices.

Advantages and Disadvantages

Advantages: - High precision and stability - Wide operating voltage range - Small form factor - Low power consumption

Disadvantages: - Limited output voltage options (only 1.2V) - Sensitive to external noise and fluctuations

Working Principles

The LM385M3-1.2/NOPB is based on bandgap reference technology. It utilizes the inherent voltage difference between two different semiconductor junctions to generate a stable and precise reference voltage. This voltage is then amplified and regulated to provide a constant 1.2V output.

Detailed Application Field Plans

The LM385M3-1.2/NOPB finds applications in various electronic systems where a stable and accurate voltage reference is required. 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 regardless of input variations.
3. Sensor Circuits: The LM385M3-1.2/NOPB can be employed in sensor circuits to provide a precise reference voltage for calibration and measurement purposes.
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 that offer similar functionality to the LM385M3-1.2/NOPB are:

1. LM4040: A series of precision voltage references available in various output voltage options.
2. LT1004: Precision reference ICs with low temperature coefficient and high accuracy.
3. MAX619: Low-power, precision voltage references suitable for portable applications.

These alternative models provide different output voltage options, package types, and additional features to cater to specific application requirements.

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