Power Reference Design Library
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Power Reference Design Library
NSC
Part
Used		 Reference Design Vin
min
(V)		 Vin
max
(V)		 Vout
(V)		 Iout
(A)		 Switch
Freq
(kHz)		 Topology Isolation Sync Error
Flag		 Enable
Pin		 Soft
Start		 Key Features
LM2586 LM2586 Flyback 15 15 7.24 0.24 200 Flyback N Y N N N  
LM2586 LM2586 Isolated Flyback 12 30 5 1.5 200 Isolated Flyback N Y N N N  
LM2591 LM2591 Buck 9 26 3.3 0.7 150 Buck N N N Y N  
LM2596 Low ripple step down converter 9 24 3.3 0.7 150 Buck N N N Y N  
LM2597 Dual 24V Supply from HV input 48 60 24 0.5 150 Buck N N Y Y Y Simple, Low Parts Count
LM2597HV LM2597HV Buck 48 60 24 0.5 150 Buck N N Y Y N  
LM2621 LM2621 Sepic Converter 2.7 5.5 3.3
-2.6
2.6		 0.65
0.5
.5		 ADJ Sepic N N N Y N  
LM2651
LM2655
LP2985		 Dual Bucks 13.5 13.5 2.5 0.1 300 Buck with LDO N N N Y Y Low Noise, Low Dropout Voltage
LM2670
 LM2670S +VE -VE Tracking 11 16

-5
to
-13

   260 Buck Boost N Y N Y N I out 1 and I out 2, Limited by
input power, output voltage
setting and efficiency

LM2671

 LM2671 0.5A Buck 24 24 3.3 0.5 260 Buck N Y N Y Y  
LM2698
LM2986
LP2951		 10 WATT Isolated Forward 36 57 1.8 1 ADJ Isolated Forward Y N N Y N  
LM2727 Sync Buck step down converter 10 13.2 2.5 5 ADJ Buck N N Y Y Y  
LM2727 Synchronous Buck 5 5 2.5 3 ADJ Synchronous Buck N N Y Y Y  
LM2727 LM2727, LM1117, LM78L05 12 12 5 0.71 ADJ Synchronous Buck N N Y Y Y  
LM2737 LM2737 Synchronous Buck 4.5 5.5 1 20 ADJ Synchronous Buck N N Y Y Y  
LM2737 USB DSL Modem Power 4.5 5.5 3.3
1.8
5		 0.075
0.25
0.24		 ADJ Buck N N Y Y Y USB DSL Modem Power
LM2737 Synchronous Buck 5 5 3.3 30 ADJ Synchronous Buck N N Y Y Y  
LM2742 LM2742 36 72 3.3
1.2		 0.3
1.5		 ADJ Synchronous Flyback N N Y Y Y  
LM2743 Synchronous Buck 3.3 3.3 1 2.5 ADJ Synchronous Buck N N Y Y Y  
LM2743 Synchronous Buck 3.3 3.3 1.2 1.5 ADJ Synchronous Buck N N Y Y Y  
LM3485 LM3485 Buck 9 14 3.3 1 ADJ Buck N N N N N  
LM3485 LM3485 Buck 20 28 3.3 0.5 ADJ Buck N N N N N  
LM3488 LM3488 Cuk Inverter 2.97 5.5 -5.2 3.3 ADJ Cuk Inverter N Y N Y N  
LM5020 Buck Boost -48 -48 13.5 1.5 ADJ Buck Boost N Y N Y Y  
LM5020 LM5020 Boost Converter 6 20 20 5
(for 3
sec)		 ADJ Boost N Y N Y Y  
LM5020 LM5020 Boost Converter 12 12 26 1.5 ADJ Boost N Y N Y Y  
LM5020 LM5020 Flyback 12 12 3.3 0.3 ADJ Flyback Y Y N Y Y  
LM5020 LM5020 Flyback 10.8 13.2 100
-36
-52		 0.035
0.04
0.045		 ADJ Flyback N Y N Y Y  
LM5020 LM5020 Isolated Flyback 50 100 24 1 ADJ Flyback Y Y N Y Y  
LM5030 LM5030 Isolated Flyback 20 60 5
1.8
3.3		 0.3
0.4
1		 ADJ Isolated Flyback Y Y N Y Y VOIP
LM5030 LM5030 Isolated Flyback 28 100 24
9
3.3		 0.6
0.6
2		 ADJ Isolated Flyback Y Y N Y Y  
LM5030 LM5030 Push Pull 36 60 24 7 ADJ Push Pull Y Y N Y Y  
LM5642 LM5642 High Current (15A) Dual
Channel (1.20V and 2.5V) converter		 10 14 1.20
2.50		 15
15		 200 Sync Buck (Dual) N Y N Y Y Dual outputs; high current;
1.20V out with a 1.3V FB part.
LM5642 LM5642 High Current (30A) Single
Channel dual phase converter		 10 14 3.3 30 200 Sync Buck
(Two Phase)		 N Y N Y Y Dual Phase, High output current
LM5642 Dual LM5642 w/ Flyback output 9 36 5
12
1.8
3.3

1.6
0.5
2
2

 200 Sync Buck/Flyback N Y   Y Y  
LM5000 LM5000 Sepic 4 9 5
 0.6
 700 Sepic N N N Y Y  

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