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NCP1608
Critical Conduction Mode
PFC Controller Utilizing a
Transconductance Error
Amplifier
The NCP1608 is an active power factor correction (PFC)
http://onsemi.com
controller specifically designed for use as a pre ? converter in ac ? dc
adapters, electronic ballasts, and other medium power off ? line
converters (typically up to 350 W). It uses critical conduction mode
(CrM) to ensure near unity power factor across a wide range of input
voltages and output power. The NCP1608 minimizes the number of
external components by integrating safety features, making it an
excellent choice for designing robust PFC stages. It is available in a
8
1
SOIC ? 8
D SUFFIX
CASE 751
8
1
MARKING
DIAGRAM
1608B
ALYW
G
SOIC ? 8 package.
A
= Assembly Location
General Features
? Near Unity Power Factor
? No Input Voltage Sensing Requirement
? Latching PWM for Cycle ? by ? Cycle On Time Control (Voltage
Mode)
? Wide Control Range for High Power Application (>150 W) Noise
Immunity
? Transconductance Error Amplifier
? High Precision Voltage Reference ( ± 1.6% Over the Temperature
Range)
? Very Low Startup Current Consumption ( ≤ 35 m A)
? Low Typical Operating Current Consumption (2.1 mA)
? Source 500 mA / Sink 800 mA Totem Pole Gate Driver
? Undervoltage Lockout with Hysteresis
? Pin ? to ? Pin Compatible with Industry Standards
? This is a Pb ? Free and Halide ? Free Device
Safety Features
? Overvoltage Protection
? Undervoltage Protection
? Open/Floating Feedback Loop Protection
? Overcurrent Protection
? Accurate and Programmable On Time Limitation
Typical Applications
? Solid State Lighting
? Electronic Light Ballast
? AC Adapters, TVs, Monitors
? All Off ? Line Appliances Requiring Power Factor Correction
L = Wafer Lot
Y = Year
W = Work Week
G = Pb ? Free Package
PIN CONNECTION
FB V CC
Control DRV
Ct GND
CS ZCD
(Top View)
ORDERING INFORMATION
Device Package Shipping ?
NCP1608BDR2G SOIC ? 8 2500 / Tape & Reel
(Pb ? Free)
?For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
? Semiconductor Components Industries, LLC, 2010
June, 2010 ? Rev. 3
1
Publication Order Number:
NCP1608/D
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