onsemi NCP1237AD65R2G

Controller, Fixed Frequency, Current Mode, for Flyback Converters

Switching Controller, Current-mode, 70kHz Switching Freq-Max, PDSO7

65kHz 9.5V~28V SOP-7 AC-DC Controllers & Regulators ROHS

PWM CONTROLLER FIXED FREQ. LATCHED SOIC7

IC OFFLINE SWITCH FLYBACK 7SOIC

Self-Supplied Monolithic AC to DC Switch

IC REG CTRLR FLYBACK PWM 7SOIC

DC-DC Converter, Flyback 9.5V~28V In 10.5V~28V Out 65kHz 1A No Isolation Short/OverTemp/OVP/OCP Protection 80% SOIC-7 SMD, Adhesive Mount 1.5mm H

The NCP1237 is a new generation 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 start-up 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. This Soft-Skip feature also dramatically reduces the risk of acoustic noise which enables the use of inexpensive transformers and capacitors in the clamping network. The NCP1237