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Details about  10pc Worldsemi WS2801SO 3-Channel (RGB) Constant Current PWM LED Driver; WS2801

10pc Worldsemi WS2801SO 3-Channel (RGB) Constant Current PWM LED Driver; WS2801

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More than 10 available / 96 sold
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Item location:
Niagara Falls, New York, United States
 
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Worldwide
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eBay item number:
160677260085
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Last updated on  Nov 18, 2013 18:52:39 EST  View all revisions

Item specifics

Condition:
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read moreabout the condition
Model:

WS2801

MPN:

WS2801SO

Brand:

Worldsemi

10pc Worldsemi WS2801SO 3-Channel Constant Current LED Driver SOP; PWM Control







Product Details
Manufacturer Worldsemi
Model WS2801SO
Quantity 10

Technical Details
Datasheet
Package Type
SOP-14
Number of Pins
14
Supply Voltage
3.3V - 5.5V DC
Output Current
5-150mA total

Product Information
Open-source Arduino library available here.

Open-source AVR studio library will be available soon
(targeted towards our ATmega32U2-based NooGroove boards sold in our store)

A very useful IC, providing a low-cost way of driving RGB LEDs.  There are 3 24-bit channels per IC, so for full addressable control of a string or array of RGB LEDs you would need 1 IC per RGB LED.  WS2801 are meant to control common anode RGB LEDs.  We have both diffused and clear lens types of RGB LEDs available which work great with this controller.

WS2801 can be operated in both constant current and constant voltage modes.

They employ a 2-wire serial data connection, similar to SPI or I2C.  ICs are chained together which means whole strings can be controlled using just 2 pins on your microcontroller. 

Data is clocked in starting with the MSB of the red gray scale data and ending with the LSB of the blue gray scale data.  See picture below for details.  Plenty more information available in the datasheet.



We have found these ICs are sensitive to power supply issues, so don't forget to add a decoupling capacitor between Vcc and Gnd pins.  Although specified for a 25MHz clock we'd recommend clocking in data at <2MHz, especially for longer strings.

Features:
  • Supports both constant voltage and constant current drive mode
  • Programmable constant LED drive current
  • Wide constant output current range 5~150mA
  • Build in PWM dimming scheme for each output channel, supports free-run, especially suitable for low cost controller application
  • PWM free-run capability(refresh rate(2.5KHz)
  • Build in buffers to cascading data and clock to the next driver
  • Output polarity reverse function
  • Support hot swap
  • Maximum input clock frequency 25MHz
  • Power supply voltage 3.3~5.5V


    • We ship worldwide for most items! Contact us for shipping costs if unavailable in listing.
    • We ship via UPS at cost! Contact us for a rate quote or check UPS.com.
    • Items will be shipped within 2 business days.
    • We only accept PayPal for payment.
    • Applicable sales tax will apply to orders shipped within Canada.


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    Shipping and handling

    Item location: Niagara Falls, New York, United States
    Shipping to: Worldwide
    Domestic handling time
    Estimated sales tax
    Will usually ship within 1 business day of receiving cleared payment[newWindowTxt].
    Seller charges sales tax in multiple provinces.

    Return policy

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    Return policy details
    This item has a 30-day return period. Note a 20% restocking fee will apply for returns. There is no charge for replacement.

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    Seller's payment instructions

    Thank you for your purchase! If you are interested in combined shipping and have not finished purchasing please continue shopping and disregard any automated invoices.
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