RS3812**代替BP2812

DESCRIPTION
The  RS3812  is  a  high  precision  constant  current 
controller, designed for non-isolated buck LED 
driver. It can operate under universal AC input or
12V~600V  DC  input.  The  RS3812  integrates  600V 
power MOSFET, so it can achieve excellent  constant 
current  performance  with  very  few  external 
components
The RS3812  uses high precision current sense circuit 
and  patent  method  for  constant  current  control,  to 
achieve high precision output current and excellent line 
regulation.  The  RS3812  operates  in  inductor  current 
critical mode. The LED current is constant over wide 
range  of  inductance  variation  and  the  LED  output 
voltage, so the load regulation is excellent.
The  RS3812  uses  patent  source  driver  architecture. 
The operation current is 200uA only, so  the  auxiliary 
winding is not needed. It can simplify the system design 
and reduce the system cost.
The RS3812  offers rich protection functions, including 
LED  short  circuit  protection,  current  sense  resistor 
short  circuit  protection  and  over  temperature 
protection.
FEATURES
?  Inductor Current Critical Mode, No Need to
Compensate the Inductance Variation
?  600V MOSFET integrated
?  Source Driver Structure, Not Need the Auxiliary
Winding for VCC
?  ±3% LED Current Accuracy
?  Up to 93% System Efficiency
?  LED Short Circuit Protection
?  Current Sense Resistor Short Circuit Protection
?  Over Temperature Protection
?  Available in SOP-8 package
APPLICATIONS
?  LED Bulb
?  LED Candle light
?  LED Spot light
?  Decorative LED lighting