Overview
The PCA9624PW,112, produced by NXP Semiconductors (formerly Freescale Semiconductor), is an I²C-bus controlled 8-bit LED driver. It is optimized for voltage switch dimming and blinking of 100 mA Red/Green/Blue/Amber (RGBA) LEDs. This device is part of the Fast-mode Plus (Fm+) family, offering higher frequency and more densely populated bus operation. The PCA9624 is designed to provide precise control over LED brightness and blinking patterns, making it suitable for various lighting applications.
Key Specifications
| Specification | Value |
|---|---|
| Supply Voltage Range | 2.3 V to 5.5 V |
| Output Current per LED | Up to 100 mA |
| Maximum Off-State Voltage | 40 V |
| PWM Frequency (Individual) | 97 kHz |
| PWM Frequency (Group) | 190 Hz (adjustable from 24 Hz to 10.73 s) |
| PWM Duty Cycle | 0% to 99.6% |
| Number of LED Outputs | 8 |
| Resolution of PWM Control | 8-bit (256 steps) |
| Operating Temperature Range | -40°C to +85°C |
| ESD Protection | 2000 V HBM, 1000 V CDM |
| I²C-Bus Frequency | Up to 1 MHz |
Key Features
- Individual and group PWM control with 256-step resolution.
- Active LOW Output Enable (OE) input pin for hardware blinking and dimming.
- Seven hardware address pins allowing up to 126 devices on the same I²C-bus.
- Software programmable I²C-bus addresses for group control.
- Software Reset (SWRST) feature through the I²C-bus.
- Internal 25 MHz oscillator and power-on reset.
- No glitch on power-up and support for hot insertion.
- Low standby current and noise filter on SDA/SCL inputs.
Applications
The PCA9624PW,112 is suitable for a variety of lighting applications, including but not limited to:
- LED lighting systems in automotive, industrial, and consumer electronics.
- Display backlighting and signage.
- LED strips and arrays for decorative and functional lighting.
- Automotive interior and exterior lighting.
Q & A
- What is the PCA9624PW,112 used for? The PCA9624PW,112 is an I²C-bus controlled 8-bit LED driver used for voltage switch dimming and blinking of RGBA LEDs.
- What is the supply voltage range of the PCA9624PW,112? The supply voltage range is from 2.3 V to 5.5 V.
- How many LED outputs does the PCA9624PW,112 have? It has 8 open-drain LED outputs.
- What is the maximum current per LED output? Each LED output can sink up to 100 mA.
- What is the maximum off-state voltage for the LED outputs? The maximum off-state voltage is 40 V.
- What is the PWM frequency for individual LED outputs? The PWM frequency for individual LED outputs is 97 kHz.
- Can the group PWM frequency be adjusted? Yes, the group PWM frequency can be adjusted from 24 Hz to 10.73 seconds.
- How many devices can be connected to the same I²C-bus? Up to 126 devices can be connected using the seven hardware address pins.
- Does the PCA9624PW,112 support software reset? Yes, it supports software reset through the I²C-bus.
- What is the operating temperature range of the PCA9624PW,112? The operating temperature range is from -40°C to +85°C.
