Overview
The PCA9634PW,112 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 and display solutions. The PCA9634 features individual and group PWM controllers, allowing for precise control over LED brightness and dimming or blinking effects.
Key Specifications
| Parameter | Value |
|---|---|
| Number of LED Outputs | 8 |
| Resolution per LED Output | 8-bit (256 steps) |
| Individual PWM Frequency | 97 kHz |
| Group PWM Frequency | Fixed: 190 Hz, Adjustable: 24 Hz to once every 10.73 seconds |
| Duty Cycle Range | 0% to 99.6% |
| Supply Voltage Range | 2.3 V to 5.5 V |
| Output Current Capability | Open-drain: 25 mA sink at 5 V, Totem-pole: 25 mA sink, 10 mA source at 5 V |
| Output Voltage Tolerance | 5.5 V |
| Operating Temperature Range | -40°C to +85°C |
| ESD Protection | Exceeds 2000 V HBM, 200 V MM, 1000 V CDM |
| Package Options | SO20, TSSOP20, HVQFN20 |
Key Features
- Individual and group PWM controllers for precise brightness control and dimming or blinking effects.
- Each LED output can be set to off, on (no PWM control), individual PWM, or both individual and group PWM.
- Active LOW Output Enable (OE) pin for asynchronous control of LED outputs.
- Software programmable LED Group and three Sub Call I²C-bus addresses for flexible addressing.
- Seven hardware address pins allowing up to 126 devices on the same I²C-bus.
- Internal 25 MHz oscillator, internal power-on reset, and noise filter on SDA/SCL inputs.
- Support for hot insertion and low standby current.
- Edge rate control on outputs and no glitch on power-up.
Applications
- RGB or RGBA LED drivers for color mixing applications.
- LED status information and LED displays.
- LCD backlights and keypad backlights for cellular phones or handheld devices.
Q & A
- What is the PCA9634PW,112 used for? The PCA9634PW,112 is an I²C-bus controlled 8-bit LED driver optimized for Red/Green/Blue/Amber (RGBA) color mixing applications.
- How many LED outputs does the PCA9634PW,112 have? The PCA9634PW,112 has 8 LED outputs.
- What is the resolution of each LED output? Each LED output has an 8-bit resolution (256 steps).
- What are the frequency options for the Group PWM controller? The Group PWM controller has a fixed frequency of 190 Hz and an adjustable frequency between 24 Hz to once every 10.73 seconds.
- What is the duty cycle range for the PWM controllers? The duty cycle range is from 0% to 99.6%.
- What is the supply voltage range for the PCA9634PW,112? The supply voltage range is from 2.3 V to 5.5 V.
- What are the output current capabilities of the PCA9634PW,112? The output current capabilities are open-drain: 25 mA sink at 5 V, and totem-pole: 25 mA sink, 10 mA source at 5 V.
- Can the PCA9634PW,112 be used in high-temperature environments? Yes, it operates in a temperature range of -40°C to +85°C.
- Does the PCA9634PW,112 support hot insertion? Yes, it supports hot insertion.
- How many devices can be connected to the same I²C-bus? Up to 126 devices can be connected to the same I²C-bus using the seven hardware address pins.
