?Semiconductor Components Industries, LLC, 2010
December, 2010 - - Rev. 6
1
Publication Order Number:
NCP1601A/D
NCP1601A, NCP1601B
Compact Fixed Frequency
Discontinuous or Critical
Conduction Voltage Mode
Power Factor Correction
Controller
The NCP1601 is a controller designed for Power FactorCorrection
(PFC)  boost  circuits.  The  device  operates  in  fixed- -frequency
Discontinuous Conduction Mode (DCM) and variable- -frequency
Critical Conduction Mode (CRM) and takes advantages from both
operating modes. DCM limits the maximum switching frequency. It
simplifies  the  front- -ended  EMI  filter  design.  CRM  limits  the
maximum currents of the boost stage diode, MOSFET and inductor.
It reduces the costs and improves the reliability of the circuit. This
device substantially exhibits unity power factor while operating in
DCM and CRM. The NCP1601 minimizes the required number of
external components. It incorporates high safety protection features
that make the NCP1601 suitable for robust and compact PFC stages.
Features
?SPAN class="pst NCP1601BDR2G_2636593_4"> Near- -Unity Power Factor in DCM or CRM
?SPAN class="pst NCP1601BDR2G_2636593_4"> Voltage- -Mode Operation
?SPAN class="pst NCP1601BDR2G_2636593_4"> Low Startup and Shutdown Current Consumption
?SPAN class="pst NCP1601BDR2G_2636593_4"> Programmable Switching Frequency for DCM
?SPAN class="pst NCP1601BDR2G_2636593_4"> Synchronization Capability
?SPAN class="pst NCP1601BDR2G_2636593_4"> Overvoltage Protection (107% of Nominal Output Level)
?SPAN class="pst NCP1601BDR2G_2636593_4"> Undervoltage Protection or Shutdown
(8% of Nominal Output Level)
?SPAN class="pst NCP1601BDR2G_2636593_4"> Programmable Overcurrent Protection
?SPAN class="pst NCP1601BDR2G_2636593_4"> Thermal Shutdown with Hysteresis (95/140?/SPAN>C)
?SPAN class="pst NCP1601BDR2G_2636593_4"> Two V
CC
Undervoltage Lockout Hysteresis Options:
4.75 V for NCP1601A and 1.5 V for NCP1601B
?SPAN class="pst NCP1601BDR2G_2636593_4"> These are Pb- -Free Devices
Typical Applications
?SPAN class="pst NCP1601BDR2G_2636593_4"> Electronic Light Ballast
?SPAN class="pst NCP1601BDR2G_2636593_4"> AC Adapters
?SPAN class="pst NCP1601BDR2G_2636593_4"> TV & Monitors
?SPAN class="pst NCP1601BDR2G_2636593_4"> Mid- -Power Applications
MARKING
DIAGRAM
x
= A or B
A
= Assembly Location
L, WL
= Wafer Lot
Y, YY
= Year
W, WW   = Work Week
G
= Pb- -Free Package
G
= Pb- -Free Package
http://onsemi.com
PDIP- -8
N SUFFIX
CASE 626
1
8
1
8
SOIC- -8
D SUFFIX
CASE 751
NCP1601x
AWL
YYWWG
1
8
1601x
ALYW
G
1
8
PIN CONNECTIONS
1
FB
8  V
CC
2
V
control
3
Ramp
4
CS
7  Drv
6  GND
5  Osc
(Top View)
Seedetailedorderingandshippinginformationinthepackage
dimensions section on page 16 of this data sheet.
ORDERING INFORMATION