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PCA9685BS from NXP,NXP Semiconductors

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PCA9685BS

Manufacturer: NXP

16-channel, 12-bit PWM Fm+ I2C-bus LED controller

Partnumber Manufacturer Quantity Availability
PCA9685BS NXP 366 In Stock

Description and Introduction

16-channel, 12-bit PWM Fm+ I2C-bus LED controller The **PCA9685BS** from **NXP Semiconductors** is a versatile **16-channel, 12-bit PWM controller** designed for precise LED dimming and servo motor control applications. Operating over a wide **2.3V to 5.5V** supply range, this I²C-bus controlled device is ideal for systems requiring multiple PWM outputs with minimal microcontroller overhead.  

Each of the 16 channels provides **12-bit resolution (4096 steps)**, allowing fine-grained brightness or position control. The PCA9685BS features an adjustable **PWM frequency** (24Hz to 1526Hz), making it suitable for driving LEDs, servos, or other PWM-dependent components. Its built-in oscillator ensures stable operation without external timing components.  

With an **I²C Fast-mode (400kHz) interface**, the PCA9685BS supports daisy-chaining up to **62 devices** on a single bus, enabling scalable control in complex systems. An **output enable pin** allows for quick disabling of all outputs, while the **totem-pole outputs** ensure strong drive capability.  

Common applications include **LED lighting systems, robotics, industrial automation, and display backlighting**. Its compact design and efficient performance make the PCA9685BS a reliable choice for engineers seeking precise, multi-channel PWM control in space-constrained environments.  

For detailed specifications, refer to the official datasheet for comprehensive electrical and timing characteristics.

Application Scenarios & Design Considerations

16-channel, 12-bit PWM Fm+ I2C-bus LED controller

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