LD1117SC-R

Product Overview

Category: Voltage Regulator
Use: LD1117SC-R is a low dropout linear voltage regulator. It is designed to provide a stable output voltage with low power dissipation.
Characteristics: LD1117SC-R has a low dropout voltage, high accuracy, and excellent line and load regulation. It is suitable for various applications that require a regulated power supply.
Package: LD1117SC-R is available in a surface mount SOT-223 package.
Essence: The essence of LD1117SC-R is to regulate the input voltage and provide a stable output voltage.
Packaging/Quantity: LD1117SC-R is typically sold in reels or tubes containing a specific quantity of units.

Specifications

• Input Voltage Range: 4.2V to 15V
• Output Voltage Range: 1.2V to 13.8V
• Dropout Voltage: 1.2V (typical)
• Output Current: Up to 800mA
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.4% (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

LD1117SC-R has three pins:

1. Input (VIN): This pin is connected to the input voltage source.
2. Output (VOUT): This pin provides the regulated output voltage.
3. Ground (GND): This pin is connected to the ground reference.

Functional Features

• Low dropout voltage ensures efficient power conversion.
• High accuracy and excellent regulation provide a stable output voltage.
• Overcurrent and thermal protection ensure safe operation.
• Short-circuit protection prevents damage to the device.

Advantages and Disadvantages

Advantages: - Low dropout voltage allows for efficient power conversion. - High accuracy and excellent regulation provide a stable output voltage. - Overcurrent and thermal protection ensure safe operation.

Disadvantages: - Limited output current capacity (up to 800mA). - SOT-223 package may require additional PCB space compared to smaller packages.

Working Principles

LD1117SC-R operates based on the principle of linear voltage regulation. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. The internal circuitry monitors the input and output voltages, adjusting the pass transistor to maintain a constant output voltage despite changes in the input voltage or load conditions.

Detailed Application Field Plans

LD1117SC-R is commonly used in various electronic devices and systems that require a regulated power supply. Some typical application fields include:

1. Consumer Electronics: LD1117SC-R can be used in smartphones, tablets, portable media players, and other battery-powered devices to regulate the voltage supplied to the internal components.
2. Industrial Automation: It finds applications in industrial control systems, PLCs (Programmable Logic Controllers), and motor control circuits to provide stable power to sensitive components.
3. Automotive Electronics: LD1117SC-R can be utilized in automotive applications such as infotainment systems, dashboard electronics, and lighting control modules.
4. Telecommunications: It is suitable for telecom equipment, routers, switches, and network devices to ensure a stable power supply.

Detailed and Complete Alternative Models

Some alternative models to LD1117SC-R that offer similar functionality and characteristics are:

1. LM1117: Manufactured by Texas Instruments, it is available in various package options and offers similar voltage regulation capabilities.
2. LT1117: Produced by Linear Technology, it provides low dropout voltage and high accuracy, suitable for a wide range of applications.
3. ADP3339: Manufactured by Analog Devices, it offers low dropout voltage and high output current capability.

These alternative models can be considered based on specific application requirements and availability in the market.

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