PCA9634PW/S911,118

Product Overview

• Category: Integrated Circuit (IC)
• Use: LED driver
• Characteristics: PWM-controlled I2C-bus LED driver
• Package: TSSOP24
• Essence: Efficient LED control solution
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply voltage: 2.3 V to 5.5 V
• Output current: 25 mA per channel
• Number of channels: 8
• Communication interface: I2C-bus
• Dimming control: 256 steps per channel
• Operating temperature range: -40°C to +85°C

Detailed Pin Configuration

The PCA9634PW/S911,118 has a TSSOP24 package with the following pin configuration:

1. OE - Output Enable
2. AI - Address Input
3. A0 - Address Input
4. A1 - Address Input
5. A2 - Address Input
6. SDA - Serial Data Input/Output
7. SCL - Serial Clock Input
8. VDD - Supply Voltage
9. GND - Ground
10. O0 - Output Channel 0
11. O1 - Output Channel 1
12. O2 - Output Channel 2
13. O3 - Output Channel 3
14. O4 - Output Channel 4
15. O5 - Output Channel 5
16. O6 - Output Channel 6
17. O7 - Output Channel 7
18. EXTCLK - External Clock Input
19. VBAT - Battery Voltage Input
20. VBAT - Battery Voltage Input
21. VBAT - Battery Voltage Input
22. VBAT - Battery Voltage Input
23. VBAT - Battery Voltage Input
24. VBAT - Battery Voltage Input

Functional Features

• PWM-controlled LED driver with 8 channels
• I2C-bus interface for easy control and configuration
• Individual 256-step dimming control for each channel
• Output enable pin for power management
• Address inputs for device addressing
• External clock input for synchronization
• Battery voltage input for low-power operation

Advantages and Disadvantages

Advantages: - Efficient LED control solution - Flexible dimming control for precise lighting effects - Easy integration with I2C-bus systems - Low power consumption - Compact TSSOP24 package

Disadvantages: - Limited number of channels (8) - Requires external clock for synchronization

Working Principles

The PCA9634PW/S911,118 is a PWM-controlled LED driver that uses the I2C-bus interface for communication. It allows individual control of up to 8 LED channels, providing precise dimming control with 256 steps per channel. The device can be easily configured and controlled using standard I2C-bus commands.

The LED driver operates by receiving commands through the I2C-bus interface and translating them into appropriate PWM signals for each channel. The output enable pin allows for power management, enabling the user to turn off specific channels when not in use. The device also supports synchronization with an external clock for applications requiring precise timing.

Detailed Application Field Plans

The PCA9634PW/S911,118 LED driver finds applications in various fields, including:

1. Automotive lighting: Used for interior and exterior lighting applications in vehicles, such as dashboard illumination, indicator lights, and accent lighting.
2. Display backlighting: Suitable for controlling LED backlighting in LCD displays, ensuring uniform brightness and energy efficiency.
3. Decorative lighting: Enables dynamic and customizable lighting effects in architectural lighting, retail displays, and entertainment venues.
4. Signage and advertising: Provides control for LED-based signage and advertising displays, allowing for eye-catching visuals and energy-efficient operation.
5. Industrial lighting: Used in industrial settings for machine status indicators, safety lighting, and general illumination.

Detailed and Complete Alternative Models

1. PCA9685PW,118: 16-channel I2C-bus controlled LED driver with 12-bit PWM resolution.
2. TLC5940NT: 16-channel constant current LED driver with grayscale control and dot correction.
3. MAX7219ENG+: Serially interfaced LED display driver with built-in decoder and multiplex scan circuitry.

These alternative models offer similar functionality and can be considered as alternatives to the PCA9634PW/S911,118 based on specific application requirements.

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