STMicroelectronics
Imej mungkin representasi.
Lihat spesifikasi untuk butiran produk.
L4993D
Lihat Butiran Helaian data

L4993D Product Overview

Introduction

The L4993D is a versatile integrated circuit that belongs to the category of voltage regulators. This device is commonly used in various electronic applications to regulate and stabilize voltage levels, ensuring consistent and reliable performance of connected components.

Basic Information Overview

  • Category: Voltage Regulator
  • Use: Stabilizing and regulating voltage levels in electronic circuits
  • Characteristics: High precision, low dropout voltage, thermal shutdown protection
  • Package: TO-220, D²PAK, SO-8
  • Essence: Ensuring stable voltage supply to connected components
  • Packaging/Quantity: Available in reels or tubes, quantity varies based on supplier

Specifications

The L4993D features the following specifications: - Input Voltage Range: 4.5V to 36V - Output Voltage Range: 1.2V to 35V - Maximum Output Current: 3A - Dropout Voltage: 0.6V at 3A - Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The L4993D has a detailed pin configuration as follows: 1. VIN (Input Voltage) 2. GND (Ground) 3. VOUT (Output Voltage) 4. ADJ (Adjustment)

Functional Features

  • High Precision: Provides accurate and stable output voltage regulation.
  • Low Dropout Voltage: Ensures efficient operation even when input voltage is close to the output voltage.
  • Thermal Shutdown Protection: Safeguards the device from overheating, enhancing its reliability.

Advantages and Disadvantages

Advantages

  • Wide input voltage range
  • High output current capability
  • Thermal shutdown protection for enhanced safety

Disadvantages

  • Higher dropout voltage compared to some alternative models
  • Limited output current compared to higher-rated regulators

Working Principles

The L4993D operates by comparing the output voltage to a reference voltage and adjusting the pass element to maintain a constant output voltage. It utilizes feedback control to continuously monitor and adjust the output voltage, ensuring stability under varying load conditions.

Detailed Application Field Plans

The L4993D finds extensive application in various electronic systems, including: - Power supplies for industrial equipment - Automotive electronics - Battery charging circuits - Portable electronic devices

Detailed and Complete Alternative Models

Some alternative models to the L4993D include: - LM317: A popular adjustable linear voltage regulator with similar characteristics - LT1083: Offers higher output current capability and lower dropout voltage - LM2940: Low dropout regulator suitable for battery-powered applications

In conclusion, the L4993D serves as a reliable voltage regulator with precise control and thermal protection, making it suitable for diverse electronic applications.

Word Count: 398

Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi L4993D dalam penyelesaian teknikal

  1. What is the L4993D IC used for?

    • The L4993D is a voltage regulator and controller IC commonly used in power management applications.

  2. What is the input voltage range of the L4993D?

    • The input voltage range of the L4993D is typically between 7V and 55V.

  3. What is the output voltage range of the L4993D?

    • The L4993D can regulate the output voltage in the range of 1.235V to 50V.

  4. What are the typical applications of the L4993D?

    • The L4993D is often used in automotive, industrial, and consumer electronics applications for voltage regulation and power management.

  5. What is the maximum output current of the L4993D?

    • The L4993D can handle a maximum output current of up to 3A.

  6. Does the L4993D require external components for operation?

    • Yes, the L4993D requires external components such as capacitors, resistors, and inductors for proper operation.

  7. What protection features does the L4993D offer?

    • The L4993D provides overcurrent protection, thermal shutdown, and overvoltage protection to safeguard the circuit and the IC itself.

  8. Can the L4993D be used in high-temperature environments?

    • Yes, the L4993D is designed to operate reliably in high-temperature environments, making it suitable for automotive and industrial applications.

  9. What is the operating frequency of the L4993D?

    • The L4993D operates at a fixed frequency of 300kHz, which helps in achieving efficient power conversion.

  10. Is the L4993D available in different package types?

    • Yes, the L4993D is available in various package types, including SO-16 and PowerSO-16, offering flexibility for different design requirements.