Current Mode Controller

The AS3842 family of control ICs provide pin-for-pin replacement of the industry standard UC3842 series of devices. The devices are redesigned to provide significantly improved tolerances in power sup- ply manufacturing. The 2.5 V reference has been trimmed to 1.0% tolerance. The Oscillator discharge current is trimmed to provide guar- anteed duty cycle clamping rather than specified discharge current. The circuit is more completely specified to guarantee all parameters impacting power supply manufacturing tolerances. In addition, the Oscillator and Flip-Flop sections have been enhanced to provide additional performance. The RT/CT pin now doubles as a syn- chronization input that CAN be easily driven from Open Collector open drain Logic outputs. This sync input is a high impedance input and CAN easily be used for externally clocked systems. The new Flip-Flop topol- ogy allows the duty cycle on the AS3844 5 to be guaranteed between 49 and 50%. The AS3843 5 requires less than 0.5 mA of start-up cur- rent over the full temperature range. By Unkown
AS3842 's PackagesAS3842 's pdf datasheet
AS3843
AS3844
AS3845




AS3842 Pinout, Pinouts
AS3842 pinout,Pin out
This is one package pinout of AS3842,If you need more pinouts please download AS3842's pdf datasheet.

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AS3842 Application Notes AS3842 RoHS AS3842 Circuits AS3842 footprint