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?Semiconductor Components Industries, LLC, 2010
June, 2010  Rev. 8
1
Publication Order Number:
NCP1606/D
NCP1606
Cost Effective Power Factor
Controller
The NCP1606 is an active power factor controller specifically
designed for use as a preconverter in electronic ballasts, acdc
adapters and other medium power off line converters (typically up to
300 W). It embeds a Critical Conduction Mode (CRM) scheme that
substantially exhibits unity power factor across a wide range of input
voltages and power levels. Housed in a DIP8 or SOIC8 package, the
NCP1606 minimizes the number of external components. Its
integration of comprehensive safety protection features makes it an
excellent driver for rugged PFC stages.
General Features
" Unity Power Factor
" No Need for Input Voltage Sensing
" Latching PWM for Cycle by Cycle On Time Control (Voltage Mode)
" High Precision Voltage Reference (?/SPAN>1.6% over temperature ranges)
" Very Low Startup Current Consumption (d 40 mA)
" Low Typical Operating Current (2.1 mA)
" 500 mA / +800 mA Totem Pole Gate Driver
" Undervoltage Lockout with Hysteresis
" Pin to Pin Compatible with Industry Standards
Safety Features
" Programmable Overvoltage Protection
" Protection against Open Loop (Undervoltage Protection)
" Accurate and Programmable On Time Limitation
" Overcurrent Limitation
Typical Applications
" Electronic Light Ballast
" AC Adapters, TVs, Monitors
" All Off Line Appliances Requiring Power Factor Correction
Figure 1. Typical Application
+
AC Line
EMI
Filter
1
4
3
2
8
5
6
7
FB
Ctrl
Ct
CS
GND
ZCD
DRV
+
C
BULK
LOAD
(Ballast,
SMPS, etc.)
NCP1606
V
OUT
R
SENSE
C
in
R
ZCD
R
OUT1
R
OUT2
C
comp
V
CC
Ct
V
CC
D
BOOST
L
BOOST
http://onsemi.com
SO8
D SUFFIX
CASE 751
MARKING
DIAGRAMS
PIN CONNECTION
NCP1606x
  AWL
  YYWWG
DIP8
P SUFFIX
CASE 626
1
8
x
= A or B
A
= Assembly Location
L, WL   = Wafer Lot
Y, YY    = Year
W, WW = Work Week
G or G   = PbFree Package
1606x
ALYW
 G
1
8
See detailed ordering and shipping information in the package
dimensions section on page 20 of this data sheet.
ORDERING INFORMATION
Feedback
Control
Ct
CS
V
CC
Drive
Ground
ZCD/STDWN
(Top View)
1
8
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