SM74101SD/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection

Package: SDIP-8 (Shrink Dual In-line Package)

Essence: The SM74101SD/NOPB is a voltage regulator IC that provides a stable output voltage for various electronic devices.

Packaging/Quantity: The SM74101SD/NOPB is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 2.5V to 18V
• Output Voltage Range: 1.2V to 15V
• Dropout Voltage: 0.3V at 1A
• Output Current: Up to 1A
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The SM74101SD/NOPB has the following pin configuration:

1. VOUT: Output Voltage
2. GND: Ground
3. VIN: Input Voltage
4. ADJ: Adjustable Pin

Functional Features

• High Efficiency: The SM74101SD/NOPB offers high efficiency, minimizing power loss and maximizing battery life.
• Low Dropout Voltage: With a low dropout voltage of 0.3V at 1A, the IC can maintain a stable output even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The ADJ pin allows users to adjust the output voltage within the specified range according to their application requirements.
• Overcurrent Protection: The IC incorporates overcurrent protection, safeguarding the connected circuitry from excessive current flow.
• Thermal Shutdown Protection: In case of excessive temperature, the IC activates thermal shutdown protection to prevent damage.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption. - Adjustable output voltage provides flexibility for various applications. - Overcurrent and thermal shutdown protection enhance reliability and safety.

Disadvantages: - Dropout voltage may limit the usability in low voltage applications. - Limited output current capability compared to higher-rated regulators.

Working Principles

The SM74101SD/NOPB operates as a linear voltage regulator. It regulates the output voltage by adjusting the resistance between the ADJ pin and ground. The internal circuitry compares the output voltage with a reference voltage and adjusts the resistance accordingly to maintain a stable output.

Detailed Application Field Plans

The SM74101SD/NOPB finds applications in various electronic devices that require a stable and adjustable voltage supply. Some potential application fields include: - Battery-powered devices - Portable audio players - Wireless communication systems - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

1. LM317: A popular adjustable voltage regulator with similar features and specifications.
2. LT1083: A high-current, adjustable voltage regulator suitable for demanding applications.
3. LM7805: A fixed 5V voltage regulator commonly used in low-power applications.

These alternative models offer different voltage ranges, current capabilities, and package options, providing users with a range of choices based on their specific requirements.

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