?Semiconductor Components Industries, LLC, 2012
May, 2012 Rev. 11
1
Publication Order Number:
NCP1605/D
NCP1605, NCP1605A,
NCP1605B
Enhanced, High Voltage and
Efficient Standby Mode,
Power Factor Controller
The NCP1605 is a controller that exhibits nearunity power factor
while operating in fixed frequency, Discontinuous Conduction Mode
(DCM) or in Critical Conduction Mode (CRM).
Housed in a SOIC16 package, the circuit incorporates all the
features necessary for building robust and compact PFC stages, with
a minimum of external components. In addition, it integrates the skip
cycle capability to lower the standby losses to a minimum.
General Features
" NearUnity Power Factor
" Fixed Frequency, Discontinuous Conduction Mode Operation
" Critical Conduction Mode Achievable in Most Stressful Conditions
" Lossless High Voltage Current Source for Startup
" Soft Skipt Cycle for Low Power Standby Mode
" Switching Frequency up to 250 kHz
" Synchronization Capability
" Fast Line / Load Transient Compensation
" Valley Turn On
" High Drive Capability: 500 mA / +800 mA
" Signal to Indicate that the PFC is Ready for Operation
(pfcOK Pin)
" V
CC
range: from 10 V to 20 V
" Follower Boost Operation
" Two V
CC
TurnOn Threshold Options:
15 V for NCP1605 & NCP1605B; 10.5 V for NCP1605A
" These Devices are PbFree, Halogen Free/BFR Free and are RoHS
Compliant
Safety Features
" Output Under and Overvoltage Protection
" BrownOut Detection
" SoftStart for Smooth Startup Operation
" Overcurrent Limitation
" Zero Current Detection Protecting the PFC stage from Inrush
Currents
" Thermal Shutdown
" Latched Off Capability
Typical Applications
" PC Power Supplies
" All Off Line Appliances Requiring Power Factor Correction
http://onsemi.com
SOIC16
D SUFFIX
CASE 751B
Device
Package
Shipping
ORDERING INFORMATION
MARKING
DIAGRAMS
x = A or B
A    = Assembly Location
WL  = Wafer Lot
Y    = Year
WW = Work Week
G    = PbFree Package
1
NCP1605G
AWLYWW
1
2
3
4
5
6
7
8
16
15
14
12
11
10
9
(Top View)
CS
in
STBY
BO
V
control
FB
CS
out
/ZCD
Ct
OSC/SYNC
HV
NC
pfcOK/REF5V
V
CC
GND
OVP/UVP
DRV
13  STDWN
PIN CONNECTIONS
For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
1
NCP1605DR2G
SOIC16
(PbFree)
2500/T ape & Reel
16
NCP1605ADR2G
SOIC16
(PbFree)
2500/T ape & Reel
NCP1605xG
AWLYWW
1
16
NCP1605BDR2G
SOIC16
(PbFree)
2500/T ape & Reel