Overview
The PCA9635PW,112 is a 16-bit Fm+ I2C-bus LED driver produced by NXP USA Inc. This device is optimized for Red/Green/Blue/Amber (RGBA) color mixing applications and is designed to control LED outputs with high precision. It features a 1 MHz Fast-mode Plus compatible I2C-bus interface and supports up to 16 LED drivers, each with its own 8-bit resolution (256 steps) individual PWM controller.
Key Specifications
| Parameter | Description |
|---|---|
| Number of LED Drivers | 16 |
| PWM Controller Resolution | 8-bit (256 steps) per LED, 8-bit (256 steps) group PWM |
| PWM Frequency | 97 kHz (individual), 190 Hz to once every 10.73 seconds (group) |
| Duty Cycle Range | 0% to 99.6% |
| I2C-bus Interface | 1 MHz Fast-mode Plus compatible, 30 mA high drive capability on SDA output |
| Power Supply Voltage Range | 2.3 V to 5.5 V |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Type | TSSOP28 |
| ESD Protection | Exceeds 2000 V HBM, 200 V MM, 1000 V CDM |
Key Features
- Each LED output programmable as off, on, or with programmable brightness.
- Programmable group dimming/blinking mixed with individual LED brightness.
- Software programmable I2C-bus addresses, including one LED Group Call address and three LED Sub Call addresses.
- Software Reset feature (SWRST Call) for resetting the device through the I2C-bus.
- 25 MHz internal oscillator requiring no external components.
- Internal power-on reset and noise filter on SDA/SCL inputs.
- Edge rate control on outputs and no glitch on power-up.
- Supports hot insertion and has low standby current.
- 5.5 V tolerant inputs and ESD protection.
Applications
- RGB or RGBA LED drivers.
- LED status information.
- LED displays.
- LCD backlights.
- Keypad backlights for cellular phones or handheld devices.
Q & A
- What is the PCA9635PW,112 used for?
The PCA9635PW,112 is used for controlling LED outputs, particularly in RGBA color mixing applications.
- How many LED drivers does the PCA9635PW,112 support?
The device supports up to 16 LED drivers.
- What is the resolution of the PWM controllers?
Each LED output has an 8-bit resolution (256 steps) individual PWM controller, and there is an additional 8-bit resolution group PWM controller.
- What is the frequency range of the PWM controllers?
The individual PWM controllers operate at 97 kHz, while the group PWM controller operates at 190 Hz to once every 10.73 seconds.
- What is the operating temperature range of the PCA9635PW,112?
The device operates from -40 °C to +85 °C.
- Does the PCA9635PW,112 support hot insertion?
- What is the power supply voltage range for the PCA9635PW,112?
The power supply voltage range is from 2.3 V to 5.5 V.
- How many I2C-bus addresses can be programmed?
The device allows for four software programmable I2C-bus addresses, including one LED Group Call address and three LED Sub Call addresses.
- Does the PCA9635PW,112 have ESD protection?
- What package type is the PCA9635PW,112 available in?
The device is available in a TSSOP28 package.
