NCP1601A Datasheet, PDF (1/18 Pages) ON Semiconductor – Compact Fixed Frequency Discontinuous or Critical Conduction Voltage Mode Power Factor Correction Controller

NCP1601A, NCP1601B
Compact Fixed Frequency
Discontinuous or Critical
Conduction Voltage Mode
Power Factor Correction
Controller
The NCP1601 is a controller designed for Power Factor Correction
(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
• Near−Unity Power Factor in DCM or CRM
• Voltage−Mode Operation
• Low Startup and Shutdown Current Consumption
• Programmable Switching Frequency for DCM
• Synchronization Capability
• Overvoltage Protection (107% of Nominal Output Level)
• Undervoltage Protection or Shutdown
(8% of Nominal Output Level)
• Programmable Overcurrent Protection
• Thermal Shutdown with Hysteresis (95/140°C)
• Two V_CC Undervoltage Lockout Hysteresis Options:
4.75 V for NCP1601A and 1.5 V for NCP1601B
• Pb−Free Packages are Available
Typical Applications
• Electronic Light Ballast
• AC Adapters
• TV & Monitors
• Mid−Power Applications
http://onsemi.com
MARKING
DIAGRAM
8
1
SOIC−8
D SUFFIX
CASE 751
8
1601x
ALYW
G
1
8
1
PDIP−8
N SUFFIX
CASE 626
8
NCP1601x
AWL
YYWWG
1
x
A
L, WL
Y, YY
W, WW
G
G
= A or B
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
= Pb−Free Package
PIN CONNECTIONS
FB 1
V_control 2
Ramp 3
CS 4
8 V_CC
7 Drv
6 GND
5 Osc
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 15 of this data sheet.
© Semiconductor Components Industries, LLC, 2005
1
December, 2005 − Rev. 4
Publication Order Number:
NCP1601A/D