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。
L4999BB1

L4999BB1

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Management
  • Characteristics: High efficiency, low power consumption
  • Package: DIP-8 (Dual In-line Package with 8 pins)
  • Essence: Voltage Regulator
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 4.5V to 40V
  • Output Voltage Range: 1.25V to 37V
  • Output Current: Up to 1.5A
  • Quiescent Current: 2.5mA
  • Switching Frequency: 150kHz
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4999BB1 IC has the following pin configuration:

  1. GND (Ground)
  2. VCC (Supply Voltage)
  3. FB (Feedback)
  4. COMP (Compensation)
  5. EN (Enable)
  6. SS/TR (Soft Start/Tracking)
  7. OUT (Output)
  8. IN (Input)

Functional Features

  • High Efficiency: The L4999BB1 offers high efficiency power conversion, minimizing energy losses.
  • Low Power Consumption: With a quiescent current of only 2.5mA, it ensures minimal power wastage during operation.
  • Wide Input Voltage Range: The IC can handle input voltages ranging from 4.5V to 40V, providing flexibility in various applications.
  • Adjustable Output Voltage: The output voltage can be adjusted from 1.25V to 37V, allowing customization based on specific requirements.
  • Protection Features: The L4999BB1 incorporates protection mechanisms such as thermal shutdown, overcurrent protection, and short-circuit protection.

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Low power consumption - Wide input voltage range - Adjustable output voltage - Protection features for enhanced reliability

Disadvantages: - Limited maximum output current (up to 1.5A) - Requires external components for complete circuit implementation

Working Principles

The L4999BB1 is a voltage regulator IC that operates based on the principle of pulse width modulation (PWM). It regulates the output voltage by adjusting the duty cycle of the switching signal. The feedback pin (FB) monitors the output voltage and provides a control signal to maintain the desired voltage level. The compensation pin (COMP) helps stabilize the control loop, ensuring stable and accurate regulation.

Detailed Application Field Plans

The L4999BB1 finds applications in various fields, including:

  1. Power Supplies: It can be used in AC-DC converters, DC-DC converters, and battery chargers.
  2. Automotive Electronics: It is suitable for automotive power management systems, LED lighting, and motor control.
  3. Industrial Equipment: The IC can be utilized in industrial power supplies, automation systems, and control circuits.
  4. Consumer Electronics: It is applicable in audio/video equipment, set-top boxes, and home appliances.

Detailed and Complete Alternative Models

  1. L4999R: Similar to L4999BB1 but with a different package (SO-8).
  2. L5999B: Higher current version with an output current of up to 3A.
  3. L6989R: Enhanced version with additional protection features and wider operating temperature range.

These alternative models offer similar functionality and can be considered as substitutes for the L4999BB1 based on specific requirements.

Word count: 457 words

技術ソリューションにおける L4999BB1 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 L4999BB1 in technical solutions:

Q1: What is L4999BB1? A1: L4999BB1 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 L4999BB1? A2: The key features of L4999BB1 include high voltage capability, low quiescent current, built-in protection features, adjustable frequency, and compatibility with different types of loads.

Q3: What are the typical applications of L4999BB1? A3: L4999BB1 is commonly used in applications such as motor control, power supplies, lighting systems, inverters, and other industrial automation solutions.

Q4: How does L4999BB1 help in motor control applications? A4: L4999BB1 provides precise control over motor speed and direction by regulating the power supply and managing the motor's drive signals.

Q5: Can L4999BB1 handle high voltage inputs? A5: Yes, L4999BB1 is designed to handle high voltage inputs, making it suitable for applications that require power management in high-voltage environments.

Q6: Does L4999BB1 have built-in protection features? A6: Yes, L4999BB1 incorporates various protection features like overvoltage protection, overcurrent protection, and thermal shutdown to ensure safe operation and prevent damage to the system.

Q7: Can L4999BB1 be used with different types of loads? A7: Yes, L4999BB1 is compatible with various types of loads, including resistive, inductive, and capacitive loads, making it versatile for different technical solutions.

Q8: How can the frequency of L4999BB1 be adjusted? A8: The frequency of L4999BB1 can be adjusted using external components like resistors and capacitors, allowing for customization based on specific application requirements.

Q9: Is L4999BB1 suitable for low-power applications? A9: Yes, L4999BB1 has a low quiescent current, making it suitable for low-power applications where energy efficiency is crucial.

Q10: Are there any application notes or reference designs available for L4999BB1? A10: Yes, the manufacturer of L4999BB1 typically provides application notes and reference designs that offer guidance on how to use the IC effectively in various technical solutions.