UCC28810 Datasheet, PDF (1/31 Pages) Texas Instruments – LED LIGHTING POWER CONTROLLER

UCC28810
UCC28811
www.ti.com.............................................................................................................................................................................................. SLUS865 – OCTOBER 2008
LED LIGHTING POWER CONTROLLER
FEATURES
1
• Transition Mode Controller for Low
Implementation Cost of AC Input LED Lighting
Applications
• Implements Single Stage Power Factor
Corrected LED Driver
• Enhanced Transient Response With Slew-Rate
Comparator
• Interfaces with Traditional Wall Dimmers
• Accurate Internal V_REF for Tight Output
Regulation
• Two UVLO Options
• Overvoltage Protection (OVP), Open-Feedback
Protection and Enable Circuits
• ±750-mA Peak Gate Drive Current
• Low Start-Up and Operating Currents
• Lead (Pb)-Free Packages
SIMPLIFIED APPLICATION DIAGRAM
APPLICATIONS
• AC Input General Lighting Applications Using
HB LEDs
• Industrial, Commercial and Residential
Lighting Fixtures
• Outdoor Lighting: Street, Roadway, Parking,
Construction and Ornamental LED Lighting
Fixtures
DESCRIPTION
The UCC28810 and UCC28811 are general lighting
power controllers for low to medium power lumens
applications requiring power factor correction and
EMC compliance. It is designed for controlling a
flyback, buck or boost converter operating in critical
conduction mode. It features a transconductance
voltage amplifier for feedback error processing, a
simple current reference generator for generating a
current command proportional to the input voltage, a
current-sense (PWM) comparator, PWM logic and a
totem-pole driver for driving an external FET.
UCC28810
1 VSENSE VDD 8
2 EAOUT GDRV 7
3 VINS
GND 6
4 ISENSE TZE 5
Bias
Low Pass
Filter
Triac Dimming
Detect
Bias
LED
Current
Sense
+
+
UDG-08120
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated