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NCP1235 - Fixed Frequency Current Mode Controller

General Description

Pin No Pin Name Function 1 LATCH Latch Off Input 2 FB 3 CS Feedback Current Sense 4 GND 5 DRV 6 VCC Drive output VCC input Pin Description Pull the pin up or down to latch

off the controller.

Key Features

  • increases safety level of the final.

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Datasheet Details

Part number NCP1235
Manufacturer onsemi
File Size 239.85 KB
Description Fixed Frequency Current Mode Controller
Datasheet download datasheet NCP1235 Datasheet

Full PDF Text Transcription for NCP1235 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for NCP1235. For precise diagrams, and layout, please refer to the original PDF.

NCP1235 Product Preview Fixed Frequency Current Mode Controller for Flyback Converters The NCP1235 is a new fixed−frequency current−mode controller featuring Dynamic Self...

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s a new fixed−frequency current−mode controller featuring Dynamic Self−Supply (DSS). This device is pin−to−pin compatible with the previous NCP12xx families. The DSS function greatly simplifies the design of the auxiliary supply and the VCC capacitor by activating the internal startup current source to supply the controller during transients. Due to frequency foldback, the controller exhibits excellent efficiency in light load condition while still achieving very low standby power consumption. Internal frequency jittering, ramp compensation, and a versatile latch input make this controller an excellent candidate for conver

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