*********************** SW   2.10 ******* 2/13/1997*******
        (C) Copyright, 1991 - 1993,  Linear Technology.
   1630 McCarthy Blvd, Milpitas, CA 95035.   408-954-8400
         Topology: Positive Boost      Part: LT1170
***********************************************************
C1 Nichicon x1 UPL1E330MAH 33æF 25V ESR=.800ê Irms=.155A
C2 Nichicon x2 UPL1V391MPH 390æF 35V ESR=.028ê Irms=2.440A
C3 Not required.
L1 Hurricane/Coiltronics HL-AK210Q/PL52E-100-5000 100.0æH  Idc=5.000A  R=0.0174ê 
L2 Not required.
D1 Motorola Schottky 1N5824 If=5A  Vr=30V Trr=0nS 
R1   16.70 kê  1%
R2    1.24 kê  1%
Rc Suggested value(not for production use): 1.00 kê  5%
Cc Suggested value(not for production use): 1.00 æF
U1 LT1170 Im=5.00A Vs=0.0V Rsw=0.20ê f=100kHz
1    Vout=18V   VinMin=10.5V VinNom=12V   VinMax=13.8V 
2   Iomin=0.5A   Ionom=1.0A   Iomax=2.5A  
3  Ripple=180mV  TaMax=70øC   TjMax=100øC  TjDmax=100øC 
. 
O.158 Operating Mode at full load current      = __Cont__       
O.159 Duty Cycle                               =   46.0 %   
O.160 Maximum Rated Switch Current at this DC  =  5.000 A   
O.161 Peak Inductor/Switch Current             =  4.846 A   
O.162 Output current at crossover (cont/dis)   =  0.128 A   
O.163 Is Max Switch Current Exceeded?          = __No__         
O.164 Is Max Duty Cycle Exceeded?              = __No__         
                                                      
O.167 RMS Inductor Current                     =  4.630 A RMS
O.168 Peak Inductor Current                    =  4.846 A   
O.169 P-P Inductor Ripple Current              =  0.437 A p-p
O.170 Inductor V*æS Product                    =  43.65 V*æS
                                                      
O.173 Input capacitor RMS ripple current       =  0.126 A RMS
O.177 Output capacitor RMS ripple current      =  2.308 A RMS
                                                      
O.187 Output ripple (p-p) without filter       =  135.7 mV p-p
O.188 Is an Output Filter Required?            = __No__         
O.204 Output ripple voltage after filter       =        mV p-p
                                                      
O.213 Peak Switch Current                      =  4.846 A   
O.214 Average switch current during on time    =  4.628 A   
O.221 Is an IC Heat Sink Required?             = __Yes__        
I.223 Thermal Resistance of IC Heat Sink Selec =      8 øC/W
O.224 IC Temperature at Max Ambient Temp       =    100 øC  
                                                      
       Beware! Theta JA for surface mount             
       packages will vary as much as 3 to 1           
       depending upon copper area!                    
                                                      
O.231 Average Diode Current                    =  2.500 A   
O.233 Avg diode current during on time         =  4.628 A   
O.234 Max Diode Reverse Voltage @VinH          =  18.00 V   
I.236 Diode Forward Voltage for Thermal Calc   =   0.50 V   
O.244 Is a Diode Heat Sink Required?           = __Yes__        
I.246 Thermal Resistance of Diode Heat Sink Se =    -36 øC/W
O.247 Diode Temperature at Max Ambient Temp    =    100 øC  
                                                      
O.258 Total IC loss                            =   2.90 W   
O.261 Total diode loss                         =   1.25 W   
O.264 Total inductor loss                      =   0.52 W   
O.265 Input capacitor loss                     =   0.01 W   
O.266 Output capacitor loss                    =   0.15 W   
O.267 Total of all losses                      =   4.83 W   
O.269 Input power                              =  49.83 W   
O.270 Input Supply Current                     =  4.746 A   
O.271 Efficiency                               =   90.3 %