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RS2138PP Datasheet(PDF) 2 Page - Orister Corporation

Part # RS2138PP
Description  High Precision CC/CV Primary?륲ide PWM Power Switch
Download  10 Pages
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Manufacturer  ORISTER [Orister Corporation]
Direct Link  http://www.orister.com
Logo ORISTER - Orister Corporation

RS2138PP Datasheet(HTML) 2 Page - Orister Corporation

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DS‐RS2138‐03    September,  2009 
www.Orister.com
 
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.
 
Application Circuits 
GND
VOUT
-+
D1
2
4
C1
C2
U1
RS2138
COMP
INV
CS
DRAIN
DRAIN
VCC
GND
GND
R1
L1
C3
Naux
D2
R2
R3
R4
C4
R5
C5
D3
T1
D4
C6
R6
Np
Ns
AC IN
 
Pin Assignments 
DIP‐8 
 
 
 
PACKAGE 
PIN 
SYMBOL 
DESCRIPTION 
VDD 
Power Supply 
COMP 
Loop Compensation for CV Stability 
INV 
The voltage feedback from auxiliary winding. Connected to resistor divider from auxiliary 
winding reflecting output voltage. PWM duty cycle is determined by EA output and 
current sense signal at pin 4. 
CS 
Current sense input 
5,6 
DRAIN 
HV MOSFET Drain Pin. The Drain pin is connected to the primary lead of the transformer 
DIP‐8 
7, 8 
GND 
Ground 
Ordering Information 
DEVICE 
DEVICE CODE 
RS2138 Y Z 
Y is package & Pin Assignments designator : 
P: DIP‐8 
Z is Lead Free designator : 
P: Commercial Standard, Lead (Pb) Free and Phosphorous (P) Free Package 
G: Green (Halogen Free with Commercial Standard) 


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