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NCP1218 fiches techniques PDF

ON Semiconductor - PWM Controller

Numéro de référence NCP1218
Description PWM Controller
Fabricant ON Semiconductor 
Logo ON Semiconductor 





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NCP1218 fiche technique
NCP1218
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PWM Controller with
Adjustable Skip Level and
External Latch Input
The NCP1218 represents a new, pin to pin compatible, generation
of the successful 7pin current mode NCP12XX product series. The
controller allows for excellent standby power consumption by use of
its adjustable skip mode and integrated high voltage startup FET.
Internal frequency jittering, ramp compensation, timerbased fault
detection and a latch input make this controller an excellent
candidate for converters where ruggedness and component cost are
the key constraints.
The Dynamic Self Supply (DSS) drastically simplifies the
transformer design in avoiding the use of an auxiliary winding to
supply the NCP1218. This feature is particularly useful in
applications where the output voltage varies during operation (e.g.
battery chargers). Due to its high voltage technology, the IC can be
directly connected to the high voltage dc rail.
Features
FixedFrequency 65 kHz CurrentMode Operation with Ramp
Compensation
Dynamic Self Supply Eliminates the Need for an Auxiliary Winding
TimerBased Fault Protection for Improved Overload Detection
Cycle Skip Reduces Input Power in Standby Mode
Latched Overload Protection
Internal High Voltage Startup Circuit
Accurate Current Limit Detector (±5%)
Adjustable Skip Level
Latch Input for Easy Implementation of Overvoltage and
Overtemperature Protection
Frequency Modulation for Softened EMI Signature
500 mA/800 mA Peak Source/Sink Current Drive Capability
Pin to Pin Compatible with the Existing NCP12XX Series
These Devices are PbFree and Halogen Free/BFR Free*
Typical Applications
ACDC Adapters for Notebooks, LCD Monitors
Offline Battery Chargers
Consumer Electronic Appliances STB, DVD, DVDR
http://onsemi.com
SOIC7
D SUFFIX
CASE 751U
MARKING DIAGRAM
8
1218AZ
ALYW
G
1
1218A= Specific Device Code
Z = Frequency= (6 = 65 kHz)
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = PbFree Package
PIN CONNECTIONS
Skip/latch
FB
CS
GND
1
(Top View)
HV
VCC
DRV
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 19 of this data sheet.
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2009
October, 2009 Rev. 1
1
Publication Order Number:
NCP1218/D

PagesPages 20
Télécharger [ NCP1218 ]


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