Overview
The PCA9634PW,118 is an I²C-bus controlled 8-bit LED driver produced by NXP USA Inc. This device is optimized for Red/Green/Blue/Amber (RGBA) color mixing applications, making it ideal for various lighting solutions. It features individual and group PWM controllers, allowing for precise brightness and dimming control of LEDs. The PCA9634PW,118 is part of the Fast-mode Plus (Fm+) family, offering higher frequency and more densely populated bus operation capabilities.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.3 V to 5.5 V |
| Output Voltage Max | 5.5 V |
| Output Current Max | 25 mA |
| PWM Frequency (Individual) | 97 kHz |
| PWM Frequency (Group) | 190 Hz to once every 10.73 seconds |
| PWM Resolution | 8-bit (256 steps) |
| I²C Bus Frequency | Up to 1 MHz |
| Package Type | TSSOP-20 |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- Individual and group PWM controllers for precise brightness and dimming control.
- 8-bit resolution (256 steps) for both individual and group PWM controllers.
- Fixed frequency of 97 kHz for individual PWM and adjustable frequency between 24 Hz to once every 10.73 seconds for group PWM.
- Output drivers can be configured as open-drain or totem-pole with 25 mA sink and 10 mA source capability at 5 V.
- Active LOW Output Enable (OE) pin for asynchronous control of LED outputs.
- Software programmable LED Group and Sub Call I²C-bus addresses.
- Hardware address pins allowing up to 126 devices on the same I²C-bus.
- Internal power-on reset and noise filter on SDA/SCL inputs.
Applications
The PCA9634PW,118 is suitable for a variety of applications, including:
- RGBA color mixing for LED lighting systems.
- Automotive lighting systems.
- Backlighting for displays.
- General lighting control in industrial and consumer electronics.
- LED signage and display systems.
Q & A
- What is the PCA9634PW,118 used for?
The PCA9634PW,118 is an I²C-bus controlled 8-bit LED driver optimized for RGBA color mixing applications. - What is the input voltage range of the PCA9634PW,118?
The input voltage range is 2.3 V to 5.5 V. - What is the maximum output current of the PCA9634PW,118?
The maximum output current is 25 mA. - What are the PWM frequencies available on the PCA9634PW,118?
The individual PWM frequency is 97 kHz, and the group PWM frequency is adjustable between 24 Hz to once every 10.73 seconds. - How many devices can be connected to the same I²C-bus?
Up to 126 devices can be connected using the hardware address pins. - What is the purpose of the Output Enable (OE) pin?
The OE pin allows asynchronous control of the LED outputs and can be used for external PWM control. - Does the PCA9634PW,118 support software programmable addresses?
Yes, it supports software programmable LED Group and Sub Call I²C-bus addresses. - What is the operating temperature range of the PCA9634PW,118?
The operating temperature range is -40°C to +85°C. - What package type is the PCA9634PW,118 available in?
The PCA9634PW,118 is available in a TSSOP-20 package. - Does the PCA9634PW,118 have internal power-on reset and noise filtering?
Yes, it features an internal power-on reset and noise filter on SDA/SCL inputs.
