WS2811 Datasheet – 3 channal Constant current LED drive IC

This post describes for the semiconductor WS2811.

The Part Number is WS2811. The package is SOP 8 Pin.

The function of this semiconductor is Signal line 256 Gray level 3 channal Constant current LED drive IC.

The manufacturer of this part is WorldSemi ( ).

See the preview image and the PDF file for more information.

1 page
WS2811 datasheet pinout

Description :

The WS2811 is 3 output channels special for LED driver circuit. It internal include intelligent digital port data latch and signal reshaping amplification drive circuit.Also include a precision internal oscillator and a 12V voltage programmable constant current output drive. In the purpose of reduce power supply ripple, the 3 output channels designed to delay turn-on function.

IC use single NZR communication mode.After the chip power-on reset, the DIN port receivedata from controller, the first IC collect initial 24bit data then sent to the internal data latch, theother data which reshaping by the internal signal reshaping amplification circuit sent to the next cascade IC through the DO port. After transmission for each chip,the signal to reduce 24bit. IC adopt auto reshaping transmit technology, making the chip cascade number is not limited the signal transmission, only depend on the speed of signal transmission.


1. Output port compression 12V.
2. Built in stabilivolt, Only add a resistance to IC VDD feet when under 24V power supply.
3. Gray level 256 can be adjusted and scan frequency not less than 400Hz/s.
4. Built in signal reshaping circuit,after wave reshaping to the next driver, ensure wave-form distortion not accumulate.


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WS2811 pdf schematic

WS2811 Datasheet

AD5602 Datasheet PDF

Part Number : AD5602
Function : 2.7 V to 5.5 V, Manufacturers : Analog Devices

Pinouts :
AD5602 datasheet

Description :

The AD5602/AD5612/AD5622, members of the nanoDAC family, are single 8-, 10-, 12-bit buffered voltage-out DACs that operate from a single 2.7 V to 5.5 V supply, consuming <100 µA at 5 V. These DACs come in tiny LFCSP and SC70 packages. Each DAC contains an on-chip precision output amplifier that allows rail-to-rail output swing to be achieved. The AD5602/AD5612/AD5622 use a 2-wire I2C-compatible serial interface that operates in standard (100 kHz), fast (400 kHz), and high speed (3.4 MHz) modes.

Single 8-, 10-, 12-bit DACs, 2 LSB INL
6-lead LFCSP and SC70 packages
Micropower operation: 100 µA max @ 5 V
Power-down to <150 nA @ 3 V
2.7 V to 5.5 V power supply
Guaranteed monotonic by design
Power-on reset to 0 V with brownout detection
3 power-down functions
I2C-compatible serial interface supports standard (100 kHz),
fast (400 kHz), and high speed (3.4 MHz) modes
On-chip output buffer amplifier, rail-to-rail operation
Qualified for automotive applications

Process control
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators

AD5602 Datasheet PDF Download

AD5602 pdf

Other data sheets within the file : AD5602,AD5602BCPZ-2-RL7,AD5602BKSZ-2500RL7,AD5602BKSZ-2REEL7,AD5602YKSZ-1500RL7