PCA9633PW,112

Product Overview

Category

PCA9633PW,112 belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

• The PCA9633PW,112 is a 4-channel constant current LED driver.
• It operates with a supply voltage range of 2.3V to 5.5V.
• This IC supports both individual and group PWM (Pulse Width Modulation) control of LEDs.
• It offers 256 brightness levels per LED channel.
• The PCA9633PW,112 has an I2C-bus interface for easy communication with microcontrollers or other devices.
• It provides thermal shutdown protection to prevent damage from excessive heat.

Package and Essence

The PCA9633PW,112 is available in a TSSOP (Thin Shrink Small Outline Package) with 20 pins. Its essence lies in its ability to efficiently drive and control multiple LEDs.

Packaging/Quantity

This product is typically sold in reels or tubes containing a specific quantity of ICs, such as 2500 units per reel.

Specifications

• Supply Voltage Range: 2.3V to 5.5V
• Number of Channels: 4
• Communication Interface: I2C-bus
• Brightness Levels: 256 per channel
• Package Type: TSSOP-20

Detailed Pin Configuration

1. VDD - Power supply voltage
2. GND - Ground reference
3. SDA - Serial Data Line (I2C)
4. SCL - Serial Clock Line (I2C)
5. OE - Output Enable
6. AI1 - Auto-Increment Bit 1
7. AI0 - Auto-Increment Bit 0
8. A0 - Device Address Bit 0
9. A1 - Device Address Bit 1
10. A2 - Device Address Bit 2
11. LEDOUT3 - LED Output Channel 3
12. LEDOUT4 - LED Output Channel 4
13. LEDOUT1 - LED Output Channel 1
14. LEDOUT2 - LED Output Channel 2
15. VLED - LED Power Supply Voltage
16. VBAT - Battery Voltage
17. INT - Interrupt Output
18. RST - Reset Input
19. EXTCLK - External Clock Input
20. SDO - Serial Data Out (I2C)

Functional Features

• Individual and group PWM control of LEDs.
• 256 brightness levels per channel for smooth dimming.
• Auto-increment function for easy programming of multiple channels.
• Thermal shutdown protection to prevent overheating.
• I2C-bus interface for simple communication with microcontrollers.

Advantages and Disadvantages

Advantages

• Efficiently drives and controls multiple LEDs.
• Offers precise brightness control with 256 levels per channel.
• Easy integration with microcontrollers through the I2C-bus interface.
• Provides thermal shutdown protection for enhanced safety.

Disadvantages

• Limited to a maximum of 4 LED channels.
• Requires external components for proper operation.
• May not be suitable for applications requiring a higher number of LED channels.

Working Principles

The PCA9633PW,112 operates by receiving commands and data through the I2C-bus interface. It uses these instructions to control the individual or grouped PWM signals that determine the brightness levels of the connected LEDs. The IC also incorporates thermal shutdown protection to safeguard against excessive heat generated during operation.

Detailed Application Field Plans

The PCA9633PW,112 finds application in various fields, including:

1. Automotive lighting systems: Used for controlling interior and exterior LED lighting in vehicles.
2. Display backlighting: Enables precise control of LED backlights in LCD displays.
3. Decorative lighting: Suitable for decorative LED lighting installations in homes, offices, or commercial spaces.
4. Signage and advertising: Provides efficient LED control for illuminated signs and advertising boards.

Detailed and Complete Alternative Models

1. PCA9685PW,118: A 16-channel LED driver with similar features to the PCA9633PW,112 but offers a higher number of channels.
2. TLC5940NT: Another 16-channel LED driver with advanced grayscale control capabilities.
3. MAX7219CNG: A versatile LED driver and display controller supporting up to 64 individual LEDs.

These alternative models offer different channel counts and additional features, providing flexibility for various LED control applications.

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