NXP USA Inc.
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PCA9956ATWY
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PCA9956ATWY

Product Overview

Category

PCA9956ATWY belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for controlling and driving LEDs (Light Emitting Diodes) in various applications.

Characteristics

  • The PCA9956ATWY is a 24-channel constant current LED driver.
  • It operates with a wide supply voltage range of 3 V to 5.5 V.
  • This IC offers high accuracy and precision in LED current control.
  • It supports both individual and group PWM (Pulse Width Modulation) control for each channel.
  • The PCA9956ATWY provides excellent thermal management capabilities, ensuring reliable performance even in demanding conditions.

Package

The PCA9956ATWY is available in a small-sized TSSOP package, which facilitates easy integration into compact electronic devices.

Essence

The essence of PCA9956ATWY lies in its ability to efficiently drive and control multiple LEDs simultaneously, enabling the creation of visually appealing lighting effects.

Packaging/Quantity

This product is typically packaged in reels, containing a quantity of 2500 units per reel.

Specifications

  • Supply Voltage Range: 3 V to 5.5 V
  • Number of Channels: 24
  • Maximum Output Current per Channel: 60 mA
  • Communication Interface: I2C (Inter-Integrated Circuit)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The PCA9956ATWY features a total of 28 pins, each serving a specific function. The detailed pin configuration is as follows:

  1. SDA: I2C Serial Data Input/Output
  2. SCL: I2C Serial Clock Input
  3. OE: Output Enable
  4. GND: Ground
  5. VCC: Power Supply Voltage 6-29. LEDn: LED Output Channels (24 channels)
  6. VLED: LED Power Supply Voltage

Functional Features

  1. Individual and Group PWM Control: The PCA9956ATWY allows precise control of LED brightness through individual or group PWM control, providing flexibility in creating various lighting effects.
  2. High Accuracy Current Control: This IC ensures accurate and consistent current control for each LED channel, resulting in uniform illumination across multiple LEDs.
  3. Thermal Management: The PCA9956ATWY incorporates thermal management features to prevent overheating, ensuring reliable performance even under demanding conditions.
  4. I2C Interface: The I2C communication interface simplifies the integration of the PCA9956ATWY into existing systems, enabling easy control and configuration.

Advantages and Disadvantages

Advantages

  • Precise and accurate LED current control
  • Flexible PWM control options
  • Excellent thermal management capabilities
  • Easy integration with existing systems through I2C interface

Disadvantages

  • Limited to driving LEDs and not suitable for other applications
  • Requires external components for proper operation

Working Principles

The PCA9956ATWY operates by receiving control signals through the I2C interface. It then translates these signals into appropriate current levels for each LED channel. By adjusting the PWM duty cycle, the brightness of individual or groups of LEDs can be controlled effectively.

Detailed Application Field Plans

The PCA9956ATWY finds extensive application in various fields, including: - Automotive lighting systems - Signage and display boards - Architectural lighting - Entertainment and stage lighting - Consumer electronics

Detailed and Complete Alternative Models

  1. PCA9685PW: 16-channel LED driver with similar features and functionality.
  2. TLC5940NT: 16-channel constant current LED driver with enhanced grayscale control.
  3. MAX7219CNG: LED display driver with integrated multiplexing capabilities.

These alternative models offer similar functionalities and can be considered as substitutes for the PCA9956ATWY, depending on specific requirements.

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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق PCA9956ATWY في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of PCA9956ATWY:

  1. Q: What is PCA9956ATWY? A: PCA9956ATWY is a 24-channel constant current LED driver with an I2C interface, commonly used for controlling LEDs in technical solutions.

  2. Q: How many LEDs can be controlled using PCA9956ATWY? A: PCA9956ATWY can control up to 24 individual LEDs or LED segments.

  3. Q: What is the maximum current that PCA9956ATWY can provide to each LED channel? A: PCA9956ATWY can provide a maximum current of 60mA per LED channel.

  4. Q: Can PCA9956ATWY dim the LEDs it controls? A: Yes, PCA9956ATWY supports individual PWM (Pulse Width Modulation) control for each LED channel, allowing for dimming functionality.

  5. Q: What is the communication interface used by PCA9956ATWY? A: PCA9956ATWY uses the I2C (Inter-Integrated Circuit) interface for communication with a microcontroller or other devices.

  6. Q: Can PCA9956ATWY be cascaded to control more than 24 LEDs? A: Yes, multiple PCA9956ATWY devices can be cascaded together to control a larger number of LEDs.

  7. Q: What is the supply voltage range for PCA9956ATWY? A: PCA9956ATWY operates with a supply voltage range of 3V to 5.5V.

  8. Q: Does PCA9956ATWY have built-in thermal shutdown protection? A: Yes, PCA9956ATWY has built-in thermal shutdown protection to prevent overheating.

  9. Q: Can PCA9956ATWY be used in automotive applications? A: Yes, PCA9956ATWY is suitable for automotive applications as it can operate in a wide temperature range and has ESD protection.

  10. Q: Are there any evaluation boards or development kits available for PCA9956ATWY? A: Yes, NXP (the manufacturer) provides evaluation boards and development kits that can help with the prototyping and testing of PCA9956ATWY-based solutions.

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