Overview
The PCA9955TW/Q900,118 is a 16-channel constant current LED driver IC produced by NXP USA Inc. This device is optimized for dimming and blinking LEDs, particularly suitable for Red/Green/Blue/Amber (RGBA) LEDs in various applications. It operates using the I2C-bus interface, providing a robust and efficient way to control LED lighting systems.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | NXP USA Inc. |
| Part Number | PCA9955TW/Q900,118 |
| Package/Case | HTSSOP-28 |
| Number of Channels | 16 |
| Constant Current per Channel | Up to 57 mA |
| LED Supply Voltage | Up to 40 V |
| Supply Voltage Range (VDD) | 3 V to 5.5 V |
| I2C-Bus Interface | Fast-mode Plus (Fm+), up to 1 MHz |
| Operating Temperature Range | -40 °C to +85 °C |
| RoHS Compliance | Yes |
| Halogen Free | Yes |
Key Features
- 16 constant current sink LED driver channels with adjustable peak current using an 8-bit linear DAC (225 μA to 57 mA).
- Fast-mode Plus (Fm+) I2C-bus interface, supporting frequencies up to 1 MHz and bus capacitance up to 4000 pF.
- Built-in open, short load, and overtemperature detection circuitry with error information readable via the I2C-bus.
- Thermal shutdown feature to protect the device from excessive internal junction temperature.
- No glitch on LED on power-up and low standby current.
- Software reset feature (SWRST Call) and software enable/disable for each programmable I2C-bus address).
Applications
The PCA9955TW/Q900,118 is suitable for various LED lighting applications, including:
- Amusement products with RGBA LEDs.
- Automotive lighting systems.
- General lighting control in industrial and consumer electronics).
- Display backlighting and signage).
Q & A
- What is the PCA9955TW/Q900,118 used for?
The PCA9955TW/Q900,118 is a 16-channel constant current LED driver IC used for controlling and dimming LEDs in various applications.
- What is the operating voltage range of the PCA9955TW/Q900,118?
The device operates with a supply voltage range of 3 V to 5.5 V.
- How many channels does the PCA9955TW/Q900,118 have?
The PCA9955TW/Q900,118 has 16 constant current sink LED driver channels.
- What is the maximum current per channel for the PCA9955TW/Q900,118?
The maximum current per channel is up to 57 mA.
- Is the PCA9955TW/Q900,118 RoHS compliant?
Yes, the PCA9955TW/Q900,118 is RoHS compliant.
- What is the I2C-bus interface type used by the PCA9955TW/Q900,118?
The device uses the Fast-mode Plus (Fm+) I2C-bus interface.
- What are the built-in protection features of the PCA9955TW/Q900,118?
The device includes built-in open, short load, and overtemperature detection circuitry, as well as a thermal shutdown feature.
- What is the operating temperature range of the PCA9955TW/Q900,118?
The operating temperature range is -40 °C to +85 °C.
- Does the PCA9955TW/Q900,118 have a software reset feature?
Yes, the device has a software reset feature (SWRST Call) that allows it to be reset through the I2C-bus.
- What package type is the PCA9955TW/Q900,118 available in?
The device is available in the HTSSOP-28 package.
