NCP1076B Datasheet | onsemi

DATA SHEET .onsemi. Enhanced Off-line Switcher for Robust and Highly Efficient Power Supplies NCP1075A/B, NCP1076A/B, NCP1077A/B, NCP1079A/B MARKING DIAGRAMS PDIP-7 (PDIP-8 LESS PIN 6) CASE 626A P107x Puzy AWL YYWWG The NCP107xuz products integrate a fixed frequency current mode controller with a 700 V MOSFET. Available in a two different pin-out of the very mon PDIP-7 package, the NCP107xuz offers a high level of integration, including soft-start, frequency-jittering, short-circuit protection, skip-cycle, a maximum peak current set-point, ramp pensation, and a dynamic self-supply (DSS, eliminating the need for an auxiliary winding). Unlike other monolithic solutions, the NCP107xuz is quiet by nature: during nominal load operation, the part switches at one of the available frequencies (65, 100 or 130 k Hz). 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 pensate 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 m W at high line. PDIP-7 (PDIP-8 LESS PIN 3) CASE 626AS P107x Puzy AWL YYWWG x = Power Version (5, 6, 7, 9) u = Pin Connections (A, B) z = 2nd level OCP enabled/disabled (A, B) y = Oscillator Frequency 65, 100, 130 (A, B, C) = Assembly Location WL = Wafer Lot Y, YY =...