Overview
The PCA9635PW/S911,118, produced by NXP USA Inc., is a 16-bit I²C-bus controlled LED driver optimized for Red/Green/Blue/Amber (RGBA) color mixing applications. This device is designed to provide precise control over LED brightness and color, making it ideal for various lighting and display applications. Each LED output has its own 8-bit resolution (256 steps) fixed frequency individual PWM controller, allowing for adjustable brightness from 0% to 99.6%. Additionally, a group PWM controller enables dimming or blinking of all LEDs with a common value.
Key Specifications
| Parameter | Value |
|---|---|
| Number of LED Drivers | 16 |
| PWM Resolution per LED | 8-bit (256 steps) |
| Individual PWM Frequency | 97 kHz |
| Group PWM Frequency | 24 Hz to once every 10.73 seconds |
| Group PWM Duty Cycle | 0% to 99.6% |
| I²C-Bus Interface | 1 MHz Fast-mode Plus compatible |
| Supply Voltage | 2.3V to 5.5V |
| Output Current per Channel | 25mA |
| Package Type | 28-pin TSSOP |
| Operating Temperature | -40°C to +85°C |
Key Features
- 16 LED drivers with individual and group PWM control for precise brightness and color management.
- 1 MHz Fast-mode Plus compatible I²C-bus interface with high drive capability.
- Hardware address pins allowing up to 126 devices on the same bus.
- Software Reset (SWRST) Call for easy reconfiguration of device registers.
- Support for RGB or RGBA color mixing applications.
- Latch-up testing exceeds 100 mA according to JEDEC Standard JESD78.
Applications
- RGB or RGBA LED drivers for color mixing applications.
- LED status information displays.
- LED displays and LCD backlights.
- Keypad backlights for cellular phones or handheld devices.
Q & A
- What is the PCA9635PW/S911,118 used for? The PCA9635PW/S911,118 is used for controlling and driving LEDs in various applications, especially those requiring RGB or RGBA color mixing.
- How many LED drivers does the PCA9635PW/S911,118 have? The device has 16 LED drivers.
- What is the resolution of the PWM controllers for each LED? Each LED has an 8-bit resolution (256 steps) PWM controller.
- What is the frequency range of the group PWM controller? The group PWM controller operates at frequencies from 24 Hz to once every 10.73 seconds.
- What is the maximum output current per channel? The maximum output current per channel is 25mA.
- What is the operating temperature range of the PCA9635PW/S911,118? The device operates from -40°C to +85°C.
- How many devices can be addressed on the same I²C-bus? Up to 126 devices can be addressed on the same I²C-bus using the hardware address pins.
- What is the purpose of the Software Reset (SWRST) Call? The Software Reset (SWRST) Call allows the master to reset the PCA9635 through the I²C-bus, similar to a Power-On Reset.
- What package type is the PCA9635PW/S911,118 available in? The device is available in a 28-pin TSSOP package.
- Is the PCA9635PW/S911,118 compliant with any automotive standards? Yes, the PCA9635PW/S911,118 is AEC-Q100 compliant for automotive applications.
