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Silan Microelectronics - CURRENT MODE PWM CONTROLLER

Numéro de référence SD4871TR
Description CURRENT MODE PWM CONTROLLER
Fabricant Silan Microelectronics 
Logo Silan Microelectronics 





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SD4871TR fiche technique
SD4871_Datasheet
CURRENT MODE PWM CONTROLLER
DESCRIPTION
SD4871 is a current mode PWM controller IC for high
performance, low standby power offline flyback converter
application.
In no load or light load condition, the IC operates in Light Load
Mode to reduce switching loss and improve efficiency.
Large startup resistor could be used in the startup circuit to
minimize the standby current because of low startup current.
SD4871 offers complete protection functions including cycle-by-
cycle over current protection, over load protection, over voltage
SOT-23-6L
and under voltage protections for VDD voltage, etc.
Excellent EMI performance is achieved with frequency shuffling
technique and soft switching control at the totem pole gate
driver output.
APPLICATIONS
FEATURES
* Battery Chargers
* Frequency shuffling to improve EMI performance
* Adapters
* Light Load Mode for minimum standby power
* Set-Top Box Power Supplies
* External programmable switching frequency
* 3μA low startup current
* Internal LEB circuit
* VDD over voltage and under voltage protection
* Gate output maximum voltage clamp
* Current limiting
* Over load protection
* SOT-23-6L package
ORDERING INFORMATION
Part No.
SD4871TR
Package
SOT-23-6L
Marking
4871
Material
Pb free
Packing
Tape & Reel
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:0.2 2011.06.21
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