STMicroelectronics
La imagen puede ser una representación.
Consulte las especificaciones para obtener detalles del producto.
LD1117ADT33TR
Ver Detalle Hojas de datos

LD1117ADT33TR

Product Overview

Category

The LD1117ADT33TR belongs to the category of voltage regulators.

Use

It is commonly used to regulate and stabilize voltage in electronic circuits.

Characteristics

  • Low dropout voltage
  • Output current up to 800 mA
  • Adjustable output voltage
  • Thermal overload protection
  • Short-circuit protection

Package

The LD1117ADT33TR comes in a small surface-mount package, typically SOT-223.

Essence

This voltage regulator is designed to provide a stable and regulated output voltage for various electronic applications.

Packaging/Quantity

The LD1117ADT33TR is usually packaged in reels or tubes, with quantities varying depending on the supplier.

Specifications

  • Input Voltage Range: 4.2V to 15V
  • Output Voltage Range: 3.3V
  • 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

Detailed Pin Configuration

The LD1117ADT33TR has three pins:

  1. VIN (Input Voltage): Connects to the input voltage source.
  2. VOUT (Output Voltage): Provides the regulated output voltage.
  3. GND (Ground): Common ground reference for the circuit.

Functional Features

  • Low Dropout Voltage: The LD1117ADT33TR has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
  • Adjustable Output Voltage: The output voltage can be adjusted by using external resistors, providing flexibility in different applications.
  • Thermal Overload Protection: The regulator includes built-in thermal overload protection, preventing damage due to excessive heat.
  • Short-Circuit Protection: It also features short-circuit protection, safeguarding the circuit from potential damage in case of a short circuit.

Advantages and Disadvantages

Advantages

  • High output current capability
  • Wide input voltage range
  • Adjustable output voltage
  • Thermal and short-circuit protection

Disadvantages

  • Relatively high dropout voltage compared to some other voltage regulators
  • SOT-223 package may require additional space on the PCB

Working Principles

The LD1117ADT33TR is a linear voltage regulator 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 accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The LD1117ADT33TR can be used in various applications, including but not limited to: - Power supplies for microcontrollers and digital circuits - Battery-powered devices - Automotive electronics - Industrial control systems - Communication equipment

Detailed and Complete Alternative Models

Some alternative models to the LD1117ADT33TR include: - LM1117-3.3 - LT1117-3.3 - MCP1703-3302E/DB

These alternatives offer similar functionality and specifications, providing options for different design requirements.

In conclusion, the LD1117ADT33TR is a versatile voltage regulator with adjustable output voltage, thermal and short-circuit protection, making it suitable for a wide range of electronic applications. Its low dropout voltage and high output current capability make it an excellent choice for powering various devices. However, designers should consider its relatively high dropout voltage and package size when selecting this regulator for their specific projects.

Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de LD1117ADT33TR en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of LD1117ADT33TR in technical solutions:

  1. Q: What is LD1117ADT33TR? A: LD1117ADT33TR is a low dropout voltage regulator that provides a fixed output voltage of 3.3V.

  2. Q: What is the maximum input voltage for LD1117ADT33TR? A: The maximum input voltage for LD1117ADT33TR is typically 15V, but it can handle up to 20V in some cases.

  3. Q: What is the dropout voltage of LD1117ADT33TR? A: The dropout voltage of LD1117ADT33TR is typically around 1.2V at a load current of 800mA.

  4. Q: Can LD1117ADT33TR be used to regulate voltages other than 3.3V? A: No, LD1117ADT33TR is specifically designed to provide a fixed output voltage of 3.3V.

  5. Q: What is the maximum output current of LD1117ADT33TR? A: LD1117ADT33TR can provide a maximum output current of 800mA.

  6. Q: Does LD1117ADT33TR require any external components for operation? A: Yes, LD1117ADT33TR requires an input capacitor and an output capacitor for stability and proper operation.

  7. Q: Is LD1117ADT33TR suitable for battery-powered applications? A: Yes, LD1117ADT33TR is suitable for battery-powered applications as it has a low quiescent current and low dropout voltage.

  8. Q: Can LD1117ADT33TR handle short-circuit conditions? A: Yes, LD1117ADT33TR has built-in protection features that allow it to handle short-circuit conditions without damage.

  9. Q: Can LD1117ADT33TR operate in high-temperature environments? A: LD1117ADT33TR has a maximum junction temperature of 125°C, making it suitable for operation in high-temperature environments.

  10. Q: Is LD1117ADT33TR available in different package options? A: Yes, LD1117ADT33TR is available in various package options, including SOT-223 and DPAK, to suit different application requirements.

Please note that the answers provided here are general and may vary depending on the specific datasheet and manufacturer's specifications for LD1117ADT33TR.