NCP1014 Datasheet, PDF (1/24 Pages) ON Semiconductor – Self-Supplied Monolithic Switcher for Low Standby- Power Offline SMPS

NCP1010, NCP1011,
NCP1012, NCP1013,
NCP1014
Self−Supplied Monolithic
Switcher for Low Standby−
Power Offline SMPS
http://onsemi.com
The NCP101X series integrates a fixed−frequency current−mode
controller and a 700 V MOSFET. Housed in a PDIP−7,
MARKING DIAGRAMS
PDIP−7 Gull Wing, or SOT−223 package, the NCP101X offers
everything needed to build a rugged and low−cost power supply,
including soft−start, frequency jittering, short−circuit protection,
skip−cycle, a maximum peak current setpoint and a Dynamic
Self−Supply (no need for an auxiliary winding).
8
PDIP−7
CASE 626A
AP SUFFIX
P101xAPyy
AWL
YYWW
Unlike other monolithic solutions, the NCP101X is quiet by nature:
1
1
during nominal load operation, the part switches at one of the available
frequencies (65 − 100 − 130 kHz). When the current setpoint falls
below a given value, e.g. the output power demand diminishes, the IC
automatically enters the so−called skip−cycle mode and provides
excellent efficiency at light loads. Because this occurs at typically 1/4
of the maximum peak value, no acoustic noise takes place. As a result,
PDIP−7
(Gull Wing)
101xAPLyy
CASE 626AA
AWL
1
APL SUFFIX
YYWW
1
standby power is reduced to the minimum without acoustic noise
4
generation.
Short−circuit detection takes place when the feedback signal fades
away, e.g. in true short−circuit conditions or in broken Optocoupler
cases. External disabling is easily done either simply by pulling the
4
SOT−223
CASE 318E
1
ST SUFFIX
101xy
ALYW
feedback pin down or latching it to ground through an inexpensive
SCR for complete latched−off. Finally soft−start and frequency
1
jittering further ease the designer task to quickly develop low−cost and
x
= Current Limit (0, 1, 2, 3, 4)
robust offline power supplies.
yy
= 06 (65 kHz), 10 (100 kHz), 13 (130 kHz)
For improved standby performance, the connection of an auxiliary
winding stops the DSS operation and helps to consume less than
100 mW at high line. In this mode, a built−in latched overvoltage
protection prevents from lethal voltage runaways in case the
y
A
WL, L
YY, Y
= Oscillator Frequency
A (65 kHz), B (100 kHz), C (130 kHz)
= Assembly Location
= Wafer Lot
= Year
Optocoupler would brake. These devices are available in economical
WW, W = Work Week
8−pin dual−in−line and 4−pin SOT−223 packages.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
Features
dimensions section on page 22 of this data sheet.
• Built−in 700 V MOSFET with Typical R_DSon of 11 W
and 22 W
• Auto−Recovery Internal Output Short−Circuit
Protection
• Large Creepage Distance Between High−Voltage Pins
• Below 100 mW Standby Power if Auxiliary Winding
• Current−Mode Fixed Frequency Operation:
65 kHz – 100 kHz − 130 kHz
is Used
• Internal Temperature Shutdown
• Skip−Cycle Operation at Low Peak Currents Only:
• Direct Optocoupler Connection
No Acoustic Noise!
• Dynamic Self−Supply, No Need for an Auxiliary
Winding
• SPICE Models Available for TRANsient Analysis
• Pb−Free Packages are Available*
• Internal 1.0 ms Soft−Start
• Latched Overvoltage Protection with Auxiliary
Winding Operation
Typical Applications
• Low Power AC/DC Adapters for Chargers
• Auxiliary Power Supplies (USB, Appliances,
• Frequency Jittering for Better EMI Signature
TVs, etc.)
*For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2004
1
September, 2004 − Rev. 10
Publication Order Number:
NCP1010/D