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NCP1077AAP065G

Converter Offline Flyback Topology 65kHz 7-PDIP

Manufacturer:

ON Semiconductor, LLC
Mfr.Part #:

NCP1077AAP065G
Datasheet:

NCP1077AAP065G Datasheet (PDF)
Case Outline:

626AS
MSL Temp (°C):

0
Container Type:

TUBE
EDA/CAD Models:

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NCP1077AAP065G General Description

The NCP1077A & NCP1077B products integrate a fixed frequency current mode controller with a 700 V MOSFET. Available in a two different pin out of the very common PDIP 7 package, it offers 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 (DSS, eliminating the need for an auxiliary winding).
Unlike other monolithic solutions, the NCP1077A & NCP1077B is quiet by nature: during nominal load operation, the part switches at one of the available frequencies (65 or 100 kHz). When the output power demand diminishes, the IC automatically enters frequency foldback mode and provides excellent efficiency at light loads. When the power demand reduces further, it enters into a skip mode to reduce the standby consumption down to a no load condition.
Protection features include: a timer to detect an overload or a short circuit event, Over voltage Protection with auto recovery. Ac input line voltage detection prevents lethal runaway in low input voltage conditions (Brown-out) as well as too high an input line (Ac line Over voltage Protection). This also allows an Over power Protection to compensate all internal delays in high input voltage conditions and optimize the maximum output current capability.
For improved standby performance, the connection of an auxiliary winding stops the DSS operation and helps to reduce input power consumption below 50 mW at high line.

Key Features

Integrated 700 V MOSFET with RDS(on) of 4.7 Ω
Current-Mode Fixed Frequency Operation (65 & 100 kHz) - 130 kHz for B version only
Peak Current: NCP1076A/B = 650mA and NCP1077A/B = 800 mA
Skip-Cycle Operation at Low Peak Current
Dynamic Self-Supply (DSS)
Auto-Recovery Output Short Circuit Protection with Timer-Based Detection
Frequency Foldback Operation
300 µA No Load Power Consumption
Frequency Jittering (including during frequency foldback mode)
Adjustable Brown-out Protection and OVP
Over Power Protection
2nd Level Current Protection