PCA9685PW,118

Basic Information Overview

Category: Integrated Circuit (IC)
Use: LED Driver
Characteristics:
- PWM (Pulse Width Modulation) Controller
- 16-channel output
- I2C-bus controlled
Package: TSSOP (Thin Shrink Small Outline Package)
Essence: Control and drive multiple LEDs with precision
Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

Supply Voltage: 2.3V to 5.5V
Output Current: Up to 25mA per channel
Frequency: 24Hz to 1526Hz
Resolution: 12-bit (4096 steps)
Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

VDD - Power supply voltage
GND - Ground
SDA - Serial Data Line (I2C bus)
SCL - Serial Clock Line (I2C bus)
OE - Output Enable
AI - Address Input
A0-A5 - Address Select Inputs 8-23. OUT0-OUT15 - LED Outputs

Functional Features

Precise control of LED brightness using PWM technique
Individual LED on/off control for each channel
Programmable LED output frequency and duty cycle
Internal oscillator for PWM generation
External power supply for driving high-power LEDs

Advantages

High resolution and accuracy in LED dimming
Easy integration with microcontrollers via I2C interface
Low power consumption
Compact package size for space-constrained applications

Disadvantages

Limited output current per channel (up to 25mA)
Requires external power supply for high-power LED applications
Not suitable for driving motors or other high-current devices

Working Principles

The PCA9685PW,118 is an I2C-bus controlled LED driver IC. It utilizes PWM technique to control the brightness of LEDs connected to its 16 output channels. The internal oscillator generates a PWM signal with adjustable frequency and duty cycle. By varying the duty cycle, the average current flowing through the LEDs can be adjusted, resulting in precise dimming control.

Detailed Application Field Plans

Automotive lighting systems
Signage and display boards
Backlighting for LCD panels
Architectural and decorative lighting
Stage and theater lighting
Gaming peripherals with RGB lighting

Detailed and Complete Alternative Models

TLC5940 - 16-channel LED driver with constant current sink outputs
MAX7219 - LED driver and display controller with serial interface
WS2812B - Addressable RGB LED driver with built-in controller

(Note: These alternative models may have different features and specifications. Please refer to their respective datasheets for detailed information.)

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van PCA9685PW,118 in technische oplossingen

Question: What is PCA9685PW,118?
Answer: PCA9685PW,118 is a 16-channel I2C-bus controlled LED controller.
Question: What is the maximum frequency of the PWM output?
Answer: The maximum frequency of the PWM output is 1526 Hz.
Question: Can PCA9685PW,118 be used to control servos?
Answer: Yes, PCA9685PW,118 can be used to control servos as it provides precise pulse-width modulation.
Question: What is the supply voltage range for PCA9685PW,118?
Answer: The supply voltage range for PCA9685PW,118 is 2.3V to 5.5V.
Question: How many addressable devices can be connected on the I2C bus?
Answer: Up to 62 PCA9685PW,118 devices can be connected on the I2C bus.
Question: Can PCA9685PW,118 be used in automotive applications?
Answer: Yes, PCA9685PW,118 can be used in automotive applications due to its wide supply voltage range and robust design.
Question: What is the resolution of the PWM output?
Answer: The resolution of the PWM output is 12-bit (4096 steps).
Question: Is PCA9685PW,118 compatible with 3.3V microcontrollers?
Answer: Yes, PCA9685PW,118 is compatible with 3.3V microcontrollers as it operates at 3.3V logic levels.
Question: Can PCA9685PW,118 be used for dimming LED lights?
Answer: Yes, PCA9685PW,118 can be used for dimming LED lights with its precise control over PWM signals.
Question: What is the typical operating temperature range for PCA9685PW,118?
Answer: The typical operating temperature range for PCA9685PW,118 is -40°C to +85°C.