PCA9635PW/Q900,118

Product Overview

Category

PCA9635PW/Q900,118 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 PCA9635PW/Q900,118 is a 16-channel constant current LED driver.
• It operates with a supply voltage range of 2.3V to 5.5V.
• This IC supports both PWM (Pulse Width Modulation) and I2C (Inter-Integrated Circuit) communication protocols.
• It offers programmable LED brightness control and individual LED on/off control.
• The PCA9635PW/Q900,118 has built-in thermal shutdown protection and open/short detection.

Package

The PCA9635PW/Q900,118 is available in a TSSOP (Thin Shrink Small Outline Package) package.

Essence

The essence of PCA9635PW/Q900,118 lies in its ability to efficiently drive and control multiple LEDs using a single IC.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a specific quantity per package. Please refer to the manufacturer's specifications for detailed packaging information.

Specifications

• Supply Voltage Range: 2.3V to 5.5V
• Number of Channels: 16
• Communication Protocol: I2C
• Dimming Control: PWM
• Thermal Shutdown Protection: Yes
• Open/Short Detection: Yes

Detailed Pin Configuration

The PCA9635PW/Q900,118 features a 24-pin TSSOP package with the following pin configuration:

1. SDA - I2C Serial Data Input/Output
2. SCL - I2C Serial Clock Input
3. OE - Output Enable
4. AI1 - Auto-Increment Address Bit 1
5. AI0 - Auto-Increment Address Bit 0
6. A0 - Device Address Bit 0
7. A1 - Device Address Bit 1
8. A2 - Device Address Bit 2
9. VDD - Supply Voltage
10. GND - Ground
11. LED0 - Channel 0 LED Output
12. LED1 - Channel 1 LED Output
13. LED2 - Channel 2 LED Output
14. LED3 - Channel 3 LED Output
15. LED4 - Channel 4 LED Output
16. LED5 - Channel 5 LED Output
17. LED6 - Channel 6 LED Output
18. LED7 - Channel 7 LED Output
19. LED8 - Channel 8 LED Output
20. LED9 - Channel 9 LED Output
21. LED10 - Channel 10 LED Output
22. LED11 - Channel 11 LED Output
23. LED12 - Channel 12 LED Output
24. LED13 - Channel 13 LED Output

Functional Features

• Individual control of each LED channel for on/off and brightness adjustment.
• Programmable PWM frequency and duty cycle for precise dimming control.
• Auto-increment address feature for easy cascading of multiple devices.
• Built-in open/short detection for enhanced reliability.
• Thermal shutdown protection to prevent overheating.

Advantages and Disadvantages

Advantages

• High integration, allowing control of multiple LEDs with a single IC.
• Wide supply voltage range enables compatibility with various systems.
• Flexible dimming control through PWM and I2C communication protocols.
• Open/short detection enhances system reliability.
• Thermal shutdown protection prevents damage due to excessive heat.

Disadvantages

• Limited to driving LEDs and not suitable for other types of loads.
• Requires knowledge of I2C communication protocol for proper usage.
• May require additional external components for specific applications.

Working Principles

The PCA9635PW/Q900,118 operates by receiving control signals through the I2C interface. It interprets these signals to individually control the on/off state and brightness level of each LED channel. The PWM technique is utilized to achieve precise dimming control. The IC also incorporates open/short detection and thermal shutdown protection mechanisms to ensure safe and reliable operation.

Detailed Application Field Plans

The PCA9635PW/Q900,118 finds application in various fields, including but not limited to:

1. Automotive lighting systems
2. Signage and display boards
3. Backlighting for LCD panels
4. Decorative lighting
5. Architectural lighting
6. Stage and theater lighting
7. Gaming peripherals
8. Consumer electronics

Detailed and Complete Alternative Models

1. PCA9685PW/Q900,118 - 16-channel LED driver with higher resolution PWM control.
2. TLC5940PW/Q900,118 - 16-channel LED driver with grayscale control capability.
3. MAX7219EWG