lm2574dw ON Semiconductor, lm2574dw Datasheet - Page 22

• Manufacturer Part Number: lm2574dw
• Description: 0.5 A, Adjustable Output Voltage, Stepdown Switching Regulator
• Manufacturer: ON Semiconductor

Gnd
+V
in
Figure 37. PC Board Layout Component Side
The LM2574−5 Step−Down Voltage Regulator with 5.0 V @ 0.5 A Output Power Capability.
+
C1
+V
in
= 7.0 to 40 V
Unregulated
DC Input
D1
NOTE: Not to scale.
Gnd
Figure 36. Schematic Diagram of the LM2574−5 Step−Down Converter
22 mF
LM2574−5.0
C1
Typical Application With Through−Hole PC Board Layout
U1
+V
L1
in
5
4
(12)
C1
C2
D1
L1
C2
Pwr
Gnd
(6)
LM2574−5
−
−
−
−
+
2
22 mF, 63 V, Aluminium Electrolytic
220 mF, 16 V, Aluminium Electrolytic
1.0 A, 40 V, Schottky Rectifier, 1N5819
330 mH, RL−1284−330, Renco Electronics
LM2574, NCV2574
Sig
Gnd
http://onsemi.com
(4)
Gnd
V
out
3
(14)
(3)
ON/OFF
(5)
22
Output
7
1
Feedback
D1
1N5819
Figure 38. PC Board Layout Copper Side
330 mH
L1
NOTE: Not to scale.
C2
220 mF
Regulated Output
+V
Gnd
out
= 5.0 V @ 0.5 A