Improved specs on UVLO and hysteresis provide more predictable start-up and shutdown
The BCT3844 control IC provides pin-for-pin replacement of the industry standard UC3844 series of devices. The devices are redesigned to provide significantly improved tolerances in power supply manufacturing. The 2.5 V reference has been trimmed to 1.0% tolerance. The oscillator discharge current is trimmed to provide guaranteed duty cycle clamping rather than specified discharged 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 synchronization input that can be easily driven from open collector/open drain logic inputs. This sync input is a high impedance input and can easily be used for externally clocked systems.
The new flip-flop topology allows the duty cycle on the BCT3844 to be guaranteed between 49% and 50%.
Relevant Support for the BCT3844
Below is the support information available for the BCT3844 - select a link to download the relevant documentation.
DATA-0454
- Product Datasheet Datasheet for the BlueChips BCT384x range of Current Mode Power Supply Control ICs Dated : 14 January 2009 ( Uploaded ) Relevant to : BCT3842 / BCT3843 / BCT3844 / BCT3845
Relevant News for the BCT3844
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