LM2931CD2TG

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - Low quiescent current - High output voltage accuracy - Thermal shutdown protection - Short-circuit current limiting

Package: TO-263-5 (D2PAK)

Essence: The LM2931CD2TG is a low dropout voltage regulator IC that provides a stable output voltage for various applications.

Packaging/Quantity: The LM2931CD2TG is available in a TO-263-5 package and is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 26V
• Output Voltage Range: 1.25V to 20V
• Dropout Voltage: 0.6V (typical)
• Quiescent Current: 120µA (typical)
• Output Current: Up to 100mA
• Line Regulation: 0.04%/V (typical)
• Load Regulation: 0.15%/mA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM2931CD2TG has five pins arranged as follows:

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| | --| Vout | --| Vin | --| GND | --| Adj | |___________| ```

Functional Features

• Low dropout voltage allows the regulator to operate with small input-output differentials.
• Low quiescent current ensures minimal power consumption when the load is light.
• High output voltage accuracy provides precise voltage regulation.
• Thermal shutdown protection prevents the IC from overheating.
• Short-circuit current limiting protects the regulator and connected components from excessive current.

Advantages and Disadvantages

Advantages: - Stable output voltage even with low input voltage - Low power consumption - Wide operating temperature range - Protection features ensure reliability

Disadvantages: - Limited output current capacity (up to 100mA) - Higher dropout voltage compared to some other regulators

Working Principles

The LM2931CD2TG is a linear voltage regulator that uses a PNP pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage, adjusting the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The LM2931CD2TG can be used in various applications where a stable voltage supply is required. Some common application fields include: - Battery-powered devices - Automotive electronics - Industrial control systems - Portable consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the LM2931CD2TG that offer similar functionality are: - LM1117-3.3: A low dropout voltage regulator with a fixed output voltage of 3.3V. - LT1763: A low dropout voltage regulator with adjustable output voltage and higher output current capability. - TPS7A47: An ultra-low dropout voltage regulator with high output voltage accuracy and wide input voltage range.

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

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