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RS6511-ADSEP Datasheet(PDF) 1 Page - Orister Corporation

Part # RS6511-ADSEP
Description  3A, 20V, 400KHz DC/DC Asynchronous Step?륞own Converter
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Manufacturer  ORISTER [Orister Corporation]
Direct Link  http://www.orister.com
Logo ORISTER - Orister Corporation

RS6511-ADSEP Datasheet(HTML) 1 Page - Orister Corporation

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DS‐RS6511‐07    February, 2010 
www.Orister.com
RS6511 
3A, 20V, 400KHz DC/DC Asynchronous Step‐Down Converter   
 
General Description 
The RS6511 is a high‐efficiency asynchronous step‐down DC/DC converter that can deliver up to 3A output current from 
4.75V  to  20V  input  supply.  The  RS6511's  current  mode  architecture  and  external  compensation  allow  the  transient 
response to be optimized over a wide range of loads and output capacitors. Cycle‐by‐cycle current limit provides protection 
against shorted outputs and thermal shutdown protection. 
 
The  RS6511  also  provides  output  under  voltage  protection  and  thermal  shutdown  protection.  The  low  current  (<30μA) 
shutdown mode provides output disconnection, enabling easy power management in battery‐powered systems. 
Features 
Applications 
● 3A Output Current 
● Up to 93% Efficiency 
● Integrated 100mΩ Power MOSFET Switches 
● Fixed 400KHz Frequency 
● Cycle‐by‐Cycle Over Current Protection 
● Thermal Shutdown function 
● Wide 4.75V to 20V Operating Input Range 
● Output Adjustable from 1.23V to 18V 
● Programmable Under Voltage Lockout 
● Available in an SOP‐8 with Exposed Pad Package 
● RoHS Compliant and 100% Lead (Pb)‐Free and Green 
(Halogen Free with Commercial Standard) 
● PC Motherboard, Graphic Card 
● LCD Monitor 
● Set‐Top Boxes 
● DVD‐Video Player 
● Telecom Equipment 
● ADSL Modem 
● Printer and other Peripheral Equipment 
● Microprocessor core supply 
● Networking power supply 
● Pre‐Regulator for Linear Regulators 
● Green Electronics/Appliances 
Application Circuits 
 
OUTPUT
ON
INPUT
C2
22uF/6.3V
U1
RS6511‐ADSE
2
3
8
5
4
7
6
IN
SW
NC
FB
GND
EN
COMP
C5
10nF
L1
15uH
C1
10uF/35V
D1
B340A
R1
16.9KΩ 1%
C6
(Optional)
R3
5.6KΩ
R2
10KΩ 1%
C3
8.2nF
OFF
4.75V to 21V
3.3V/3A
CERAMIC x2
CERAMIC x2
 
 
This  integrated  circuit  can  be  damaged  by  ESD.  Orister  Corporation  recommends  that  all  integrated  circuits  be  handled  with 
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. 
 
ESD  damage  can  range  from  subtle  performance  degradation  to  complete  device  failure.  Precision  integrated  circuits  may  be  more 
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
 


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