Pin No Pin Name
Function
1 LATCH
Latch
Off Input
2 FB Feedback + Shutdown pin
3 CS
Current Sense
4 GND 5 DRV 6 VCC
Drive output VCC input
8 HV
High
voltage pin
Pin Description
Pull the pin up or down to latch
off the controller.
Key Features
a timer-based fault detection that ensures the detection of.
Full PDF Text Transcription for NCP1248 (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
NCP1248. For precise diagrams, and layout, please refer to the original PDF.
NCP1248 Fixed Frequency Current Mode Controller for Flyback Converters The NCP1248 is a new fixed-frequency current-mode controller featuring the Dynamic Self-Supply. Thi...
View more extracted text
equency current-mode controller featuring the Dynamic Self-Supply. This function greatly simplifies http://onsemi.com the design of the auxiliary supply and the VCC capacitor by activating the internal startup current source to supply the controller during start-up, transients, latch, stand-by etc. This device contains a special HV detector which detect the application unplug from the AC input SOIC−7 line and triggers the X2 discharge current. This HV structure allows CASE 751U the brown-out detection as well.
NCP1248 Datasheet
