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SPX1117M3-L
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SPX1117M3-L

Product Overview

  • Category: Voltage Regulator
  • Use: Provides a stable output voltage for electronic devices
  • Characteristics: High precision, low dropout voltage, low quiescent current
  • Package: SOT-223
  • Essence: Linear regulator IC
  • Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

  • Input Voltage Range: 4.75V to 18V
  • Output Voltage Range: 1.2V to 15V
  • Output Current: Up to 1A
  • Dropout Voltage: 1.1V (typical)
  • Quiescent Current: 5mA (typical)
  • Line Regulation: 0.2% (typical)
  • Load Regulation: 0.4% (typical)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The SPX1117M3-L has three pins:

  1. VIN (Pin 1): Input voltage pin.
  2. GND (Pin 2): Ground reference pin.
  3. VOUT (Pin 3): Output voltage pin.

Functional Features

  • High precision output voltage regulation.
  • Low dropout voltage ensures efficient power conversion.
  • Low quiescent current minimizes power consumption.
  • Overcurrent and thermal protection for enhanced reliability.
  • Fast transient response for sudden load changes.
  • Adjustable output voltage through external resistors.

Advantages and Disadvantages

Advantages

  • Provides a stable output voltage for electronic devices.
  • High precision regulation ensures accurate voltage levels.
  • Low dropout voltage allows for efficient power conversion.
  • Low quiescent current reduces power consumption.
  • Offers overcurrent and thermal protection for added reliability.
  • Fast transient response handles sudden load changes effectively.

Disadvantages

  • Limited output current capacity (up to 1A).
  • Requires external resistors for adjustable output voltage.

Working Principles

The SPX1117M3-L is a linear regulator IC that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage, adjusting the pass transistor's resistance to maintain a stable output voltage. The dropout voltage is minimized by using a low resistance pass transistor. The quiescent current is kept low to reduce power consumption when the load is light.

Detailed Application Field Plans

The SPX1117M3-L is widely used in various electronic devices and applications, including:

  1. Power Supplies: Provides regulated voltage for microcontrollers, sensors, and other components in power supply circuits.
  2. Battery-Powered Devices: Regulates voltage in portable devices such as smartphones, tablets, and wearable gadgets.
  3. Automotive Electronics: Ensures stable voltage levels in automotive systems, including infotainment systems, lighting, and control modules.
  4. Industrial Control Systems: Used in PLCs, motor drives, and other industrial control applications to maintain precise voltage levels.
  5. Telecommunications: Provides voltage regulation in communication equipment, routers, switches, and network devices.

Detailed and Complete Alternative Models

  1. LM317: A popular adjustable linear regulator with similar specifications.
  2. LT1086: Low dropout linear regulator with higher output current capability.
  3. LM1117: Fixed voltage linear regulator available in various output voltage options.
  4. TPS7A47: Ultra-low dropout linear regulator with high PSRR and low noise performance.
  5. ADP3339: High precision, low dropout linear regulator suitable for demanding applications.

(Note: This list is not exhaustive and there are many other alternative models available in the market.)

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技術ソリューションにおける SPX1117M3-L の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of SPX1117M3-L in technical solutions:

  1. Q: What is SPX1117M3-L? A: SPX1117M3-L is a low dropout voltage regulator that provides a fixed output voltage with high accuracy and low quiescent current.

  2. Q: What is the input voltage range for SPX1117M3-L? A: The input voltage range for SPX1117M3-L is typically between 4.75V and 15V.

  3. Q: What is the output voltage of SPX1117M3-L? A: The output voltage of SPX1117M3-L can be set to various fixed voltages, such as 3.3V or 5V, depending on the specific variant.

  4. Q: What is the maximum output current of SPX1117M3-L? A: The maximum output current of SPX1117M3-L is typically around 1A, but it can vary depending on the specific variant and thermal conditions.

  5. Q: Can SPX1117M3-L handle high temperatures? A: Yes, SPX1117M3-L is designed to operate at high temperatures and has built-in thermal shutdown protection to prevent overheating.

  6. Q: Is SPX1117M3-L suitable for battery-powered applications? A: Yes, SPX1117M3-L is an excellent choice for battery-powered applications due to its low quiescent current and low dropout voltage.

  7. Q: Does SPX1117M3-L require any external components? A: Yes, SPX1117M3-L requires a few external components, such as input and output capacitors, to ensure stability and proper operation.

  8. Q: Can SPX1117M3-L be used in both linear and switching power supply designs? A: Yes, SPX1117M3-L can be used in both linear and switching power supply designs, depending on the specific requirements of the application.

  9. Q: What is the typical dropout voltage of SPX1117M3-L? A: The typical dropout voltage of SPX1117M3-L is around 1.2V at full load, but it can vary depending on the input and output voltage differentials.

  10. Q: Is SPX1117M3-L available in different package options? A: Yes, SPX1117M3-L is available in various package options, such as SOT-223 and TO-252, to accommodate different PCB layouts and thermal requirements.

Please note that the answers provided here are general and may vary depending on the specific datasheet and manufacturer's specifications for SPX1117M3-L.