Overview
The PCA9626B/S911,118 is a 24-bit Fm+ I2C-bus 100 mA 40 V LED driver produced by NXP USA Inc. This integrated circuit is designed to control and drive LEDs, particularly optimized for voltage switch dimming and blinking of Red/Green/Blue/Amber (RGBA) LEDs. The device operates with a supply voltage range of 2.3 V to 5.5 V and features open-drain outputs that can handle voltages up to 40 V.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | LQFP48 |
| Supply Voltage Range | 2.3 V to 5.5 V |
| Output Current per Channel | 100 mA |
| Output Voltage Range | Up to 40 V |
| PWM Frequency (Individual) | 97 kHz |
| PWM Frequency (Group) | 190 Hz to once every 10.73 seconds |
| PWM Resolution | 8-bit (256 steps) |
| I2C-bus Addressing | 7 hardware address pins, 4 software programmable addresses |
Key Features
- Individual and group PWM control with adjustable duty cycles from 0% to 99.6%.
- Each LED output has its own 8-bit resolution (256 steps) fixed frequency individual PWM controller.
- An additional 8-bit resolution group PWM controller for dimming or blinking all LEDs with the same value.
- Active LOW Output Enable (OE) input pin for hardware blinking and dimming of the LEDs.
- 7 hardware address pins allowing up to 126 devices to be connected to the same I2C-bus.
- 4 software programmable I2C-bus addresses for addressing groups of devices.
- Output state change programmable on the Acknowledge or the STOP Command.
- A Chase Byte for executing predefined ON/OFF patterns for the 24 LED outputs.
Applications
- LED lighting systems in automotive, industrial, and consumer electronics.
- Display backlighting and signage.
- RGB and RGBA LED strips and modules.
- Smart home and IoT devices requiring advanced LED control.
Q & A
- What is the PCA9626B/S911,118 used for?
The PCA9626B/S911,118 is used as an I2C-bus controlled 24-bit LED driver for controlling and driving LEDs, especially in applications requiring dimming and blinking of RGBA LEDs.
- What is the supply voltage range of the PCA9626B/S911,118?
The supply voltage range is from 2.3 V to 5.5 V.
- What is the maximum output voltage the PCA9626B/S911,118 can handle?
The device can handle output voltages up to 40 V.
- How many hardware address pins does the PCA9626B/S911,118 have?
The device has 7 hardware address pins.
- What is the PWM frequency range for the group PWM controller?
The group PWM controller operates at a frequency range from 190 Hz to once every 10.73 seconds.
- Can the output state change be programmed?
Yes, the output state change can be programmed to occur on the Acknowledge or the STOP Command.
- How many software programmable I2C-bus addresses are available?
There are 4 software programmable I2C-bus addresses available.
- What is the resolution of the PWM controllers?
The PWM controllers have an 8-bit resolution (256 steps).
- Can multiple PCA9626B/S911,118 devices be connected to the same I2C-bus?
Yes, up to 126 devices can be connected to the same I2C-bus.
- What is the purpose of the Chase Byte feature?
The Chase Byte feature allows for the execution of predefined ON/OFF patterns for the 24 LED outputs.
