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LP3943ISQ

This LED driver offers seamless integration into various lighting applications, thanks to its easy-to-use SMBus/I2C communication protocol

Inventory:5,538

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Overview of LP3943ISQ

The LP3943ISQ is a 16-channel LED driver IC designed for driving LEDs in various lighting applications. It features a high efficiency boost converter and integrated FETs to provide accurate current regulation for each LED channel.

Pinout

(Note:The pin configuration below is a general representation.Refer to the specific datasheet for precise details.)

  • VIN:Input Voltage
  • VOUT:Output Voltage
  • VDD:Power Supply
  • GND:Ground
  • SCL:I2C Serial Clock
  • SDA:I2C Serial Data
  • LED1-LED16:LED Driver Channels

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the LP3943ISQ IC for a visual representation.

Key Features

  • 16-Channel LED Driver:Provides independent control of up to 16 LEDs,ideal for large-scale lighting applications.
  • High Efficiency Boost Converter:Integrated boost converter ensures efficient power management and extended battery life.
  • Programmable Current Control:Allows precise current regulation for each LED channel to optimize brightness and power consumption.
  • I2C Interface:Supports I2C communication for easy integration into digital control systems.
  • Thermal Shutdown and Overcurrent Protection:Includes built-in protections to safeguard the IC and LEDs from thermal and electrical faults.

Note:For detailed technical specifications,please refer to the LP3943ISQ datasheet.

Application

  • LED Display Panels:Suitable for driving LEDs in display panels and signage applications.
  • Architectural Lighting:Used in architectural lighting designs requiring precise control and dimming of multiple LEDs.
  • Automotive Lighting:Applicable for interior and exterior automotive lighting systems with multi-channel LED requirements.

Functionality

The LP3943ISQ is a versatile LED driver IC that provides efficient and programmable current control for up to 16 LED channels.It enables precise illumination control in various lighting applications.

Usage Guide

  • Power Supply:Connect VIN(Pin 1),VDD(Pin 3)to the power supply,and GND(Pin 4)to ground.
  • LED Connections:Connect LED1-LED16(Pins 5-20)to the anodes or cathodes of the respective LEDs.
  • Control Interface:Use SCL(Pin 5)and SDA(Pin 6)for I2C communication to program LED brightness and control.

Frequently Asked Questions

Q:Can the LP3943ISQ drive high-power LEDs?
A:Yes,the LP3943ISQ can drive high-power LEDs with its programmable current control and efficient boost converter.

Equivalent

For similar functionalities,consider these alternatives to the LP3943ISQ:

  • PCA9685:A 16-channel PWM LED driver IC with similar I2C control and dimming capabilities.
  • IS31FL3733:A multi-channel LED driver IC with advanced dimming features and integrated boost converter.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Number of channels 16 LED current per channel (mA) 25
LED configuration Parallel Program memory No
Topology Linear Programmable ramp control No
Vin (min) (V) 2.3 Vin (max) (V) 5.5
Iout (max) (A) 0.2 Features I2C control
Iq (typ) (mA) 0.35 Shutdown current (ISD) (typ) (µA) 2
Operating temperature range (°C) -40 to 85 Rating Catalog

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Warranty, Returns, and Additional Information

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LP3943ISQ

This LED driver offers seamless integration into various lighting applications, thanks to its easy-to-use SMBus/I2C communication protocol

Inventory:

5,538