The NCP107x products integrate a fixed frequency current mode controller with a 700 V MOSFET. Available in a PDIP−7 or SOT−223 package, the NCP107x offer a high level of integration, including soft−start, frequency−jittering, short−circuit protection, skip−cycle, a maximum peak current set point, ramp compensation, and a Dynamic Self−Supply (eliminating the need for an auxiliary winding).

Features• Built−in 700 V MOSFET with RDS(on) of 4.7 Ω(NCP1076/77) / 11 Ω(NCP1072/75) / 22 Ω(NCP1070/71)
• Large Creepage Distance Between High−voltage Pins
• Current−Mode Fixed Frequency Operation – 65 / 100 / 130 kHz
• Peak Current: NCP1070/72 with 250 mA, NCP1071 with 350 mA, NCP1075 with 450 mA, NCP1076 with 650 mA and NCP1077 with 800 mA
• Fixed Ramp Compensation
• Skip−Cycle Operation at Low Peak Currents Only: No Acoustic Noise!
• Dynamic Self−Supply: No Need for an Auxiliary Winding
• Internal 1 ms Soft−Start
• Auto−Recovery Output Short Circuit Protection with Timer−Based Detection
• Auto−Recovery Overvoltage Protection with Auxiliary Winding Operation
• Frequency Jittering for Better EMI Signature, Including Frequency Foldback Mode
• No Load Input Consumption < 50 mW
• Frequency Foldback to Improve Efficiency at Light Load
• Internal Temperature Shutdown
• These are Pb−Free Devices

Typical Applications• Auxiliary / Standby Isolated Power Supplies White Goods / Smart Meter / E−Meter

Manufacturer	onsemi
Product Category	AC DC Converters, Offline Switchers
Series	-
Product	Switching Controllers
Packaging	Tube
Unit-Weight	0.030018 oz
Mounting-Style	Through Hole
Package-Case	8-DIP (0.300", 7.62mm), 7 Leads
Operating-Temperature	-40°C ~ 125°C (TJ)
Mounting-Type	Through Hole
Output-Type	Open Drain
Supplier-Device-Package	7-PDIP
Watt	25W
Number-of-Outputs	1 Output
Output-Isolation	Isolated
Internal-Switch-s	Yes
Voltage-Breakdown	700V
Topology	Flyback
Voltage-Start-Up	8.1V
Voltage-Supply-Vcc-Vdd	6.3 V ~ 10 V
Duty-Cycle	69%
Frequency-Switching	65kHz
Fault-Protection	Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit
Control-Features	-
Shutdown	Yes
Isolation	Isolated
Output-Power	25 W
Maximum Operating Temperature	+ 125 C
Operating temperature range	- 40 C
Operating-Supply-Voltage	8.1 V
Description-Function	High voltage switcher regulator for low power offline SMPS
Operating-Supply-Current	1 mA
Input-Voltage	8.1 V
Switching-Frequency	65 kHz
Package-Case	PDIP-7
Duty-Cycle-Max	73 %