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LP3943ISQ/NOPB +BOM

LED Driver IC 16 Output Power Switch Shift Register I2C, SMBus Dimming 25mA 24-WQFN (4x4)

LP3943ISQ/NOPB General Description

Unlike traditional methods of dimming LEDs using serial shift registers, such as the 74LS594/5, the LP3943 offers a more streamlined approach. By setting up the frequency and duty cycle for each output pin, the LP3943 significantly reduces the amount of data traffic on the serial bus. A single command from the host is all that is needed to control the status of each LED, toggling between ON or OFF states or cycling through programmed frequency and duty cycle settings

Key Features

  • Internal Power-On Reset
  • Active Low Reset
  • Internal Precision Oscillator
  • Variable Dim Rates
    (From 6.25 ms to 1.6 s; 160 Hz to 0.625 Hz)
  • 16 LED Drivers (Multiple Programmable States: ON, OFF, Input, and Dimming at a Specified Rate)
  • 16 Open-Drain Outputs Capable of Driving up to 25 mA per LED

Specifications

Source Content uid LP3943ISQ/NOPB Pbfree Code Yes
Part Life Cycle Code Active Reach Compliance Code compliant
ECCN Code EAR99 HTS Code 8542.39.00.01
Data Input Mode SERIAL Input Characteristics STANDARD
Interface IC Type LED DISPLAY DRIVER JESD-30 Code S-PQCC-N24
Moisture Sensitivity Level 1 Multiplexed Display Capability NO
Number of Channels 16 Number of Functions 1
Number of Segments 16 Number of Terminals 24
Output Characteristics OPEN-DRAIN Peak Reflow Temperature (Cel) 260
Surface Mount YES Temperature Grade INDUSTRIAL
Terminal Finish MATTE TIN Terminal Form NO LEAD
Terminal Position QUAD Time@Peak Reflow Temperature-Max (s) 30

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