Datasheet4U Logo Datasheet4U.com

NCP1237 - Fixed Frequency Current Mode Controller

General Description

Pin No Pin Name Function 1 LATCH Latch off Input 2 FB 3 CS 4 GND 5 DRV 6 VCC 8 HV Feedback Current Sense Drive Output VCC Input High Voltage Pin Pin Description Pull the pin up or down to latch

off the controller.

Key Features

  • a dual.
  • level timer.
  • based fault detection that controls the amount of transient peak power that the controller can deliver for a limited time. Internal frequency jittering, ramp compensation, and a versatile latch input make this controller an excellent candidate for converters where ruggedness and components cost are the key constraints. In addition, the controller includes a new high voltage circuitry that combines a startup current source and a brown.
  • out / line OVP dete.

📥 Download Datasheet

Datasheet Details

Part number NCP1237
Manufacturer onsemi
File Size 274.53 KB
Description Fixed Frequency Current Mode Controller
Datasheet download datasheet NCP1237 Datasheet

Full PDF Text Transcription for NCP1237 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for NCP1237. For precise diagrams, and layout, please refer to the original PDF.

NCP1237 Fixed Frequency Current Mode Controller for Flyback Converters The NCP1237 is a new generation of the NCP12xx fixed−frequency current−mode controllers featuring D...

View more extracted text
on of the NCP12xx fixed−frequency current−mode controllers featuring Dynamic Self−Supply (DSS), pin−to−pin compatible with the previous generation. 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 its proprietary Soft−Skip™ mode combined with frequency foldback, the controller exhibits excellent efficiency in light load condition while still achieving very low standby power consumption.

More Datasheets from onsemi

Part Number Description
NCP1230 Low Standby Power High Performance PWM Controller
NCP1230A Low-Standby Power Soft Skip Mode Controller
NCP1231 Low Standby Power High Performance PWM Controller
NCP1234 Fixed Frequency Current Mode Controller
NCP1235 Fixed Frequency Current Mode Controller
NCP1236 Fixed Frequency Controller
NCP1238 Fixed-Frequency Controller
NCP1239 Fixed Frequency Current-Mode Controller
NCP120 Very Low Dropout Bias Rail CMOS Voltage Regulator
NCP1200 PWM Current-Mode Controller