LC5220 Series: Off-Line LED Driver IC

The LC5220 series is the power IC for non-isolated LED driver applications with commercial power supply. It provides constant output current control for driving LEDs. The buck or buck-boost topology is selectable by peripheral circuit structure.

The product incorporates a power MOSFET and a controller IC in a single industry-standard package. It includes various functions, and this design allows the achievement of highly cost-effective LED lighting power supply systems by reducing external component count and minimizing PCB area.

RECEIVE PRODUCT ALERTS
We'll notify you when there are updates to this product. Sign Up
  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
  • NewsNews
  • Buck and buck-boost topology; selectable by peripheral circuit structure
  • Built-in fixed reference voltage limiting constant current control; high precision regulator improves current precision and simplifies setting of current level
  • Sleep function, with latch mode; input high, 3 V or more, on REF pin turns off IC output to LEDs
  • Enable function; input low on REF pin toggles IC output to LEDs
  • High input voltage; up to 250 V or 450 V, depending on product
  • Built-in constant current control; PWM method, output current adjustable by the voltage input on the REF pin
  • External adjustable PWM dimming control
  • Protection features:
    • Open protection (OPP) with latched shutdown; protects IC when a free-wheeling diode is open
    • Undervoltage lockout (UVLO)
    • Overcurrent protection (OCP) with latched shutdown; variable OCP threshold linked to REF pin voltage
    • Thermal shutdown (TSD) with auto restart
Packages

Click the image to view larger
Product Image Functional Block Diagram

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
LC5222D 8-lead DIP -20°C to 85°C Yes View Data New Contact your
local sales rep
Check Stock
LC5222S 8-lead SOP -20°C to 85°C Yes View Data New Contact your
local sales rep
Check Stock
LC5223D 8-lead DIP -20°C to 85°C Yes View Data New Contact your
local sales rep
Check Stock
LC5225D 8-lead DIP -20°C to 85°C Yes View Data New Contact your
local sales rep
Check Stock
LC5225S 8-lead SOP -20°C to 85°C Yes View Data New Contact your
local sales rep
Check Stock
LC5226D 8-lead DIP -20°C to 85°C Yes View Data New Contact your
local sales rep
Check Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

Copyright © 2017 Allegro MicroSystems, LLC

Sitemap  |  Privacy Policy  |  Contact Webmaster

Follow us on: LinkedIn YouTube Google+ Follow Allegro on Twitter

Careers   |   Contact Sales   |   Home   |   Legal   |   Quality & Environment   |   Request Samples