ON Semiconductor
Зображення може бути репрезентативним.
Деталі продукту див. у специфікаціях.
LB1838M-TLM-E
Переглянути деталі Таблиці даних

LB1838M-TLM-E

Product Overview

  • Category: Integrated Circuit
  • Use: Motor Driver
  • Characteristics: High voltage, low saturation voltage, compact size
  • Package: SOP (Small Outline Package)
  • Essence: LB1838M-TLM-E is a motor driver integrated circuit designed for controlling the speed and direction of DC motors.
  • Packaging/Quantity: Available in tape and reel packaging with 3000 units per reel.

Specifications

  • Operating Voltage: 2.5V to 5.5V
  • Output Current: 1.2A (continuous), 3.5A (peak)
  • Number of Channels: Dual channel
  • Control Interface: PWM (Pulse Width Modulation)
  • Protection Features: Overcurrent protection, thermal shutdown

Detailed Pin Configuration

The LB1838M-TLM-E has a total of 16 pins. The pin configuration is as follows:

  1. VCC1: Power supply for channel 1
  2. IN1: Input control signal for channel 1
  3. OUT1: Output for channel 1
  4. GND1: Ground for channel 1
  5. VREF1: Reference voltage for channel 1
  6. VCC2: Power supply for channel 2
  7. IN2: Input control signal for channel 2
  8. OUT2: Output for channel 2
  9. GND2: Ground for channel 2
  10. VREF2: Reference voltage for channel 2
  11. VREF: Common reference voltage
  12. MODE: Mode selection pin
  13. STBY: Standby control pin
  14. VREF3: Reference voltage for internal circuit
  15. GND: Ground
  16. VCC: Power supply

Functional Features

  • Dual channel motor driver with independent control for each channel
  • High voltage capability allows driving motors up to 36V
  • Low saturation voltage minimizes power loss and heat generation
  • Built-in overcurrent protection prevents damage to the IC and connected components
  • Thermal shutdown feature protects against overheating

Advantages and Disadvantages

Advantages: - Compact size makes it suitable for space-constrained applications - Wide operating voltage range allows compatibility with various systems - High output current capability enables driving of medium-sized DC motors - Efficient power management reduces energy consumption

Disadvantages: - Limited number of channels may not be suitable for applications requiring more than two motors - Lack of built-in speed control circuitry requires external PWM signal source

Working Principles

The LB1838M-TLM-E operates by receiving control signals through the IN1 and IN2 pins. These control signals determine the direction and speed of the connected DC motors. The IC amplifies and drives the received signals to the respective motor outputs (OUT1 and OUT2). The VREF1 and VREF2 pins provide reference voltages for controlling the motor speed.

Detailed Application Field Plans

The LB1838M-TLM-E is commonly used in various applications that require precise control of DC motors. Some typical application fields include:

  1. Robotics: Controlling the movement of robot arms, legs, or wheels.
  2. Automotive: Adjusting the position of mirrors, windows, or seats.
  3. Industrial Automation: Driving conveyor belts, pumps, or fans.
  4. Home Appliances: Regulating the speed of cooling fans, vacuum cleaners, or kitchen appliances.

Detailed and Complete Alternative Models

  1. L293D: Dual H-Bridge motor driver with similar specifications and pin configuration.
  2. SN754410: Quadruple Half-H driver with higher output current capability.
  3. TB6612FNG: Dual motor driver with built-in speed control circuitry.

These alternative models offer similar functionality and can be used as substitutes for the LB1838M-TLM-E in various applications.

Word count: 529 words

Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням LB1838M-TLM-E у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of LB1838M-TLM-E in technical solutions:

  1. Q: What is LB1838M-TLM-E? A: LB1838M-TLM-E is a motor driver IC (integrated circuit) that can control the speed and direction of DC motors.

  2. Q: What is the maximum voltage and current rating of LB1838M-TLM-E? A: LB1838M-TLM-E has a maximum voltage rating of 36V and a maximum current rating of 3A.

  3. Q: Can LB1838M-TLM-E be used with both brushed and brushless DC motors? A: No, LB1838M-TLM-E is designed specifically for brushed DC motors.

  4. Q: How many motors can be controlled using LB1838M-TLM-E? A: LB1838M-TLM-E can control one DC motor at a time.

  5. Q: Does LB1838M-TLM-E support bidirectional control of the motor? A: Yes, LB1838M-TLM-E supports bidirectional control, allowing the motor to rotate in both forward and reverse directions.

  6. Q: Can LB1838M-TLM-E handle PWM (Pulse Width Modulation) signals for speed control? A: Yes, LB1838M-TLM-E can accept PWM signals to control the speed of the motor.

  7. Q: Is LB1838M-TLM-E compatible with microcontrollers like Arduino or Raspberry Pi? A: Yes, LB1838M-TLM-E can be easily interfaced with microcontrollers through its input pins.

  8. Q: What is the purpose of the built-in thermal shutdown feature in LB1838M-TLM-E? A: The thermal shutdown feature protects the IC from overheating by shutting down the motor driver when the temperature exceeds a certain threshold.

  9. Q: Can LB1838M-TLM-E handle stall current protection for the motor? A: Yes, LB1838M-TLM-E has built-in stall current protection to prevent damage to the motor in case of a stall condition.

  10. Q: Are there any application examples where LB1838M-TLM-E can be used? A: LB1838M-TLM-E can be used in various applications such as robotics, automation, electric vehicles, and home appliances that require precise control of DC motors.

Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.