STMicroelectronics
画像はイメージの場合もございます。
商品詳細は仕様をご覧ください。
L4999BB1TR

L4999BB1TR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High efficiency, low power consumption
  • Package: SMD (Surface Mount Device)
  • Essence: Voltage Regulator
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 4.5V to 40V
  • Output Voltage Range: 1.2V to 37V
  • Output Current: Up to 3A
  • Efficiency: Up to 95%
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4999BB1TR IC has the following pin configuration:

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. VOUT: Output voltage pin
  4. COMP: Compensation pin for feedback control
  5. FB: Feedback pin for regulating output voltage
  6. EN: Enable pin for turning on/off the regulator
  7. SS: Soft-start pin for controlling startup time
  8. PGND: Power ground pin
  9. BST: Boost pin for driving external MOSFET

Functional Features

  • Wide input voltage range allows for versatile applications
  • High efficiency ensures minimal power loss
  • Adjustable output voltage provides flexibility
  • Overcurrent and thermal protection for enhanced safety
  • Soft-start feature prevents inrush current during startup

Advantages and Disadvantages

Advantages

  • High efficiency leads to energy savings
  • Wide input voltage range accommodates various power sources
  • Compact SMD package enables space-saving designs
  • Overcurrent and thermal protection enhance reliability

Disadvantages

  • Limited output current may not be suitable for high-power applications
  • Requires external components for proper operation

Working Principles

The L4999BB1TR is a voltage regulator IC that converts an input voltage to a regulated output voltage. It utilizes a boost converter topology to achieve high efficiency. The feedback control loop adjusts the duty cycle of the internal MOSFET, ensuring the output voltage remains stable despite changes in the input voltage or load conditions. The soft-start feature gradually ramps up the output voltage during startup, preventing excessive inrush current.

Detailed Application Field Plans

The L4999BB1TR is commonly used in various applications, including:

  1. Power supplies for industrial equipment
  2. Automotive electronics
  3. LED lighting systems
  4. Battery charging circuits
  5. Telecom and networking devices

Detailed and Complete Alternative Models

  • L4999R: Similar specifications, but with a different package (DIP)
  • L4999G: Higher output current capability (up to 5A)
  • L4999C: Lower input voltage range (2.7V to 18V)

These alternative models provide options based on specific requirements and design constraints.

Word count: 314 words

技術ソリューションにおける L4999BB1TR 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 L4999BB1TR in technical solutions:

Q1: What is L4999BB1TR? A1: L4999BB1TR is a specific model of integrated circuit (IC) used for various technical applications, particularly in power management and control systems.

Q2: What are the key features of L4999BB1TR? A2: Some key features of L4999BB1TR include high voltage capability, low quiescent current, built-in protection features, and compatibility with different types of loads.

Q3: What are the typical applications of L4999BB1TR? A3: L4999BB1TR is commonly used in applications such as motor control, power supplies, lighting systems, and other devices that require efficient power management and control.

Q4: How does L4999BB1TR help in motor control applications? A4: L4999BB1TR provides advanced control features like adjustable dead-time generation, soft-start functionality, and overcurrent protection, making it suitable for precise motor control applications.

Q5: Can L4999BB1TR handle high voltages? A5: Yes, L4999BB1TR has a high voltage capability, typically up to several hundred volts, which makes it suitable for applications that require handling high voltage levels.

Q6: Does L4999BB1TR have any built-in protection features? A6: Yes, L4999BB1TR incorporates various protection features such as overvoltage protection, overcurrent protection, and thermal shutdown, ensuring the safety and reliability of the system.

Q7: Is L4999BB1TR compatible with different types of loads? A7: Yes, L4999BB1TR is designed to be compatible with various types of loads, including inductive loads like motors and transformers, as well as resistive and capacitive loads.

Q8: Can L4999BB1TR be used in lighting systems? A8: Yes, L4999BB1TR is commonly used in lighting systems, especially for controlling the power supply to different types of lamps, such as fluorescent lamps or LED lights.

Q9: What is the quiescent current of L4999BB1TR? A9: The quiescent current of L4999BB1TR is typically low, which helps in reducing power consumption and increasing overall system efficiency.

Q10: Are there any application notes or reference designs available for L4999BB1TR? A10: Yes, the manufacturer of L4999BB1TR often provides application notes and reference designs that can help engineers and designers understand and implement the IC effectively in their technical solutions.

Please note that the specific details and answers may vary depending on the manufacturer's documentation and the application requirements.