RGB/White/Blue 16-LED Fun Light Driver

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. From then on, only a single command from the host is required to turn each individual open drain output ON, OFF, or to cycle a programmed frequency and duty cycle. Maximum output sink current is 25 mA per pin and 200 mA per package. Any ports not used for controlling the LEDs CAN be used for general purpose input/output expansion.
By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LP3943ISQ Texas Instruments 16 channel RGB/White LED driver with independent string control via SMBUS/I2C 24-WQFN -40 to 85
LP3943ISQX/NOPB Texas Instruments 16 channel RGB/White LED driver with independent string control via SMBUS/I2C 24-WQFN -40 to 85
LP3943ISQ/NOPB Texas Instruments 16 channel RGB/White LED driver with independent string control via SMBUS/I2C 24-WQFN -40 to 85
LP3943 's PackagesLP3943 's pdf datasheet
LP3943ISQEV
LP3943ISQ LLP
LP3943ISQX LLP




LP3943 Pinout will be updated soon..., now you can download the pdf datasheet to check the pinouts !
LP3943 Application circuits
LP3943 circuits
This is one application circuit of LP3943,If you need more circuits,please download LP3943's pdf datasheet.


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