NCP1608 Datasheet, PDF (1/24 Pages) ON Semiconductor – Critical Conduction Mode PFC Controller Utilizing OTA

NCP1608
Critical Conduction Mode
PFC Controller Utilizing OTA
The NCP1608 is an active power factor correction (PFC)
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
SOIC−8 package.
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 Amplifier
• High Precision Voltage Reference (±1.6% Over the Temperature
Range)
• Very Low Startup Current Consumption (≤ 35 mA)
• 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
http://onsemi.com
MARKING
8
DIAGRAM
1
SOIC−8
D SUFFIX
CASE 751
8
1608B
ALYW
G
1
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Package
PIN CONNECTION
FB
Control
Ct
CS
(Top View)
V_CC
DRV
GND
ZCD
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, 2009
1
April, 2009 − Rev. 0
Publication Order Number:
NCP1608/D