LM2594APDBCKGEVB ON Semiconductor, LM2594APDBCKGEVB Datasheet - Page 22

• Manufacturer Part Number: LM2594APDBCKGEVB
• Description: EVAL BOARD FOR LM2594APDBCKG
• Manufacturer: ON Semiconductor

Specifications of LM2594APDBCKGEVB

• Design Resources: LM2594APDBCKGEVB BOM LM2594APDBCKGEVB Schematic LM2594APDBCKGEVB Gerber Files
• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 5V
• Current - Output: 500mA
• Voltage - Input: 4.5 ~ 40 V
• Regulator Topology: Buck
• Frequency - Switching: 150kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM2594
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: LM2594APDBCKG
• Other names: LM2594ADPBCKGEVB; LM2594ADPBCKGEVBOS; LM2594APDBCKGEVBOS

References
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THE LM2594 STEP−DOWN VOLTAGE REGULATOR WITH 5.0 V @ 0.5 A OUTPUT POWER CAPABILITY.
National Semiconductor LM2594 Data Sheet and Application Note
National Semiconductor LM2595 Data Sheet and Application Note
Marty Brown “Practical Switching Power Supply Design”, Academic Press, Inc., San Diego 1990
Ray Ridley “High Frequency Magnetics Design”, Ridley Engineering, Inc. 1995
Figure 33. Printed Circuit Board Layout With
+V
Figure 32. Schematic Diagram of the 5.0 V @ 0.5 A Step−Down Converter Using the LM2594−ADJ
in
Unregulated
DC Input
= 10 V to 40 V
100 mF
/50 V
C1
C2
D1
L1
R1
R2
C1
TYPICAL APPLICATION WITH THROUGH−HOLE PC BOARD LAYOUT
NOTE: Not to scale.
−
−
−
−
−
−
100 mF, 50 V, Aluminium Electrolytic
220 mF, 25 V, Aluminium Electrolytic
1.0 A, 40 V, Schottky Rectifier, 1N5819
100 mH, DO3340P, Coilcraft
1.0 kW, 0.25 W
3.0 kW, 0.25 W
Component
+V
in
7
6
LM2594
GND
4
Feedback
ON/OFF
5
ON/OFF
8
Output
http://onsemi.com
D1
1N5819
22
100 mH
L1
Figure 34. Printed Circuit Board Layout
C2
220 mF
/25 V
NOTE: Not to scale.
R1
1.0 k
Copper Side
R2
3.0 k
V
V
R1 is between 1.0 k and 5.0 k
ref
out
= 1.23 V
+ V
C
ref
FF
) 1.0 ) R2
V
Regulated
Output Filtered
out2
= 5.0 V @ 0.5 A
R1