Overview
The PCA9634PW/S911,118 is an 8-bit I2C-bus controlled LED driver produced by NXP USA Inc. This component is optimized for Red/Green/Blue/Amber (RGBA) color mixing applications, making it ideal for various lighting and display solutions. It features individual and group PWM control, allowing for precise brightness and dimming adjustments of the LEDs.
Key Specifications
| Specification | Value |
|---|---|
| Number of LED Outputs | 8 |
| PWM Resolution | 8-bit (256 steps) |
| Individual PWM Frequency | 97 kHz |
| Group PWM Frequency | 190 Hz (adjustable from 24 Hz to once every 10.73 seconds) |
| Output Current Capability | 25 mA sink, 10 mA source at 5 V |
| Operating Voltage Range | 2.3 V to 5.5 V |
| Operating Temperature Range | -40°C to +85°C |
| Package Types | SO20, TSSOP20, HVQFN20 |
| I2C-Bus Addressing | 7 hardware address pins, 4 software programmable addresses |
| Internal Oscillator Frequency | 25 MHz |
| ESD Protection | Exceeds 2000 V HBM, 200 V MM, 1000 V CDM |
Key Features
- Individual and group PWM control for each LED output
- Programmable LED output states: off, on, individual PWM, or group PWM
- Hardware and software reset capabilities
- No external components required for the 25 MHz internal oscillator
- Internal power-on reset and noise filter on SDA/SCL inputs
- Edge rate control on outputs and no glitch on power-up
- Support for hot insertion and low standby current
- 5.5 V tolerant inputs and ESD protection
Applications
- RGB or RGBA LED drivers
- LED status information and displays
- LCD backlights
- Keypad backlights for cellular phones or handheld devices
Q & A
- What is the PCA9634PW/S911,118 used for? The PCA9634PW/S911,118 is used for controlling LEDs in RGBA color mixing applications.
- How many LED outputs does the PCA9634PW/S911,118 have? It has 8 LED outputs.
- What is the resolution of the PWM control for each LED output? Each LED output has an 8-bit resolution (256 steps).
- What are the operating voltage and temperature ranges of the PCA9634PW/S911,118? The operating voltage range is 2.3 V to 5.5 V, and the operating temperature range is -40°C to +85°C.
- Does the PCA9634PW/S911,118 require external components for its internal oscillator? No, it does not require external components for its 25 MHz internal oscillator.
- What types of packages are available for the PCA9634PW/S911,118? It is available in SO20, TSSOP20, and HVQFN20 packages.
- How many devices can be connected to the same I2C-bus using the PCA9634PW/S911,118? Up to 126 devices can be connected to the same I2C-bus.
- What is the current capability of each LED output? Each LED output can sink 25 mA and source 10 mA at 5 V.
- Does the PCA9634PW/S911,118 support hot insertion? Yes, it supports hot insertion.
- What level of ESD protection does the PCA9634PW/S911,118 have? It exceeds 2000 V HBM, 200 V MM, and 1000 V CDM.
