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LP3943 - RGB/White/Blue 16-LED Fun Light Driver

General Description

LP3943 is an integrated device capable of independently driving 16 LEDs.

This device also contains an internal precision oscillator that provides all the necessary timing required for driving each LED.

Two prescaler registers along with two PWM registers provide a versatile duty cycle control.

Key Features

  • n n n n Internal power-on reset Active low reset Internal precision oscillator Variable dim rates (from 6.25 ms to 1.6s; 160 Hz.
  • 0.625 Hz) Key Specifications n 16 LED driver (multiple programmable states.
  • on, off, input, and dimming at a specified rate) n 16 Open drain outputs capable of driving up to 25 mA per LED.

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📁 Similar Datasheet

Part Number Description Manufacturer
LP3943 White-LED Driver Texas Instruments

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LP3943 RGB/White/Blue 16-LED Fun Light Driver November 2003 LP3943 RGB/White/Blue 16-LED Fun Light Driver General Description LP3943 is an integrated device capable of independently driving 16 LEDs. This device also contains an internal precision oscillator that provides all the necessary timing required for driving each LED. Two prescaler registers along with two PWM registers provide a versatile duty cycle control. The LP3943 contains the ability to dim LEDs in SMBUS/ I2C applications where it is required to cut down on bus traffic. Traditionally, to dim LEDs using a serial shift register such as 74LS594/5 would require a large amount of traffic to be on the serial bus. LP3943 instead requires only the setup of the frequency and duty cycle for each output pin.