NCP1252EDR2G Datasheet PDF - ON Semiconductor

The NCP1252 controller offers everything needed to build cost effective and reliable ac-dc switching supplies dedicated to ATX power supplies or any forward application. Thanks to the use of an internally fixed timer, NCP1252 detects an output overload without relying on the auxiliary Vcc. A Brown-Out input offers protection against low input voltages and improves the converter safety. Finally, the SOIC-8 package saves PCB space and represents a solution of choice in cost sensitive project.

●Features |   | Benefits

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● Peak current mode control

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● Help to build rugged power supplies

● Adjustable switching frequency

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● High flexibility on the switching frequency

● Latched primary overcurrent protection with 10 ms fixed delay

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● Allow temporary over load/current and latch permanent fault

● Adjustable soft start timer

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● Flexibility on the soft start duration

● Auto recovery brown out detection

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● Resume the power supply operation after a brown out detection

● Internal 160 ns leading edge blanking

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● Noise immunity improved

● Frequency jittering

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● Improve the EMI signature by spreading the noise

● Adjustable internal ramp compensation

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● Save external components

● +500 mA / -800 mA Source/Sink current driver capability

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● No need of external power MOSFET driver

● Skip cycle operation in light/no load operation

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● Save dummy load

● SOIC-8 package

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● Save PCB area

● Extended Vcc range up to 28 V with auto recovery UVLO

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