NCP1654 Datasheet, PDF (1/9 Pages) ON Semiconductor – Power Factor Controller for Compact and Robust, Continuous Conduction Mode Pre−Converters

NCP1654
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Power Factor Controller for
Compact and Robust,
Continuous Conduction
Mode Pre−Converters
The NCP1654 is a controller for Continuous Conduction Mode
(CCM) Power Factor Correction step−up pre−converters. It controls
the power switch conduction time (PWM) in a fixed frequency mode
and in dependence on the instantaneous coil current.
Housed in a DIP8 or SO8 package, the circuit minimizes the
number of external components and drastically simplifies the PFC
implementation. It also integrates high safety protection features that
make the NCP1654 a driver for robust and compact PFC stages like
an effective input power runaway clamping circuitry.
Features
• IEC1000−3−2 Compliant
• Average Current Continuous Conduction Mode
• Fast Transient Response
• Very Few External Components
• Very Low Startup Currents (<75 mA)
• Very Low Shutdown Currents (< 400 mA)
• Low Operating Consumption
• ±1.5 A Totem Pole Gate Drive
• Accurate Fully Integrated 65 kHz Oscillator
• Latching PWM for cycle−by−cycle Duty−Cycle Control
• Internally Trimmed Internal Reference
• 2 versions of Undervoltage Lockout with Hysteresis
• Soft−Start for Smoothly Startup Operation (B version only)
• Shutdown Function
Safety Features
• Inrush Currents Detection
• Overvoltage Protection
• Undervoltage Detection for Open Loop Detection (shutdown)
• Brown−Out Detection
• Soft−Start
• Accurate Overcurrent Limitation
• True Overpower Limitation
Typical Applications
• TV, Monitors, PC Desktop SMPS
• AC Adapters SMPS
• White Goods, other Off−line SMPS
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
http://onsemi.com
MARKING
DIAGRAMS
8
8
1
PDIP−8
P SUFFIX
CASE 626
NCP1654
AWL
YYWWG
1
8
1
SO−8
D SUFFIX
CASE 751
8
N1654
ALYW
G
1
NCP1654,
N1654 = Device Code
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
G or G = Pb−Free Package
PIN CONNECTIONS
Ground 1
8 Driver
V_M 2
CS 3
7 V_CC
6 Feedback
Brown−Out 4
5 V_control
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
© Semiconductor Components Industries, LLC, 2007
1
March, 2007 − Rev. P0
Publication Order Number:
NCP1654/D