LM2575T-3.3G ON Semiconductor, LM2575T-3.3G Datasheet - Page 23

• Manufacturer Part Number: LM2575T-3.3G
• Description: IC REG SW 1A 3.3V STPDWN TO220-5
• Manufacturer: ON Semiconductor
• Type: Step-Down (Buck)r

Specifications of LM2575T-3.3G

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 3.3V
• Current - Output: 1A
• Frequency - Switching: 52kHz
• Voltage - Input: 4.75 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: TO-220-5 (Straight Leads)
• Output Voltage: 3.3 V
• Output Current: 1 A
• Input Voltage: 4.75 V to 40 V
• Switching Frequency: 52 KHz
• Operating Temperature Range: - 40 C to + 125 C
• Mounting Style: Through Hole
• Duty Cycle (max): 98 %
• Primary Input Voltage: 12V
• No. Of Outputs: 1
• No. Of Pins: 5
• Filter Terminals: Through Hole
• Frequency: 52kHz
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

GND
+V
THE LM2575−5.0 STEP−DOWN VOLTAGE REGULATOR WITH 5.0 V @ 1.0 A OUTPUT POWER
Figure 36. Printed Circuit Board
in
in
+V
in
L1
= +7.0 V to +40 V
CAPABILITY. TYPICAL APPLICATION WITH THROUGH−HOLE PC BOARD LAYOUT
C1
Unregulated
Component Side
NOTE: Not to scale.
DC Input
GND
D1
U1 LM2575
Figure 35. Schematic Diagram of the LM2575−5.0 Step−Down Converter
in
100 mF
/50 V
C1
C2
D1
L1
C1
J1
−
−
−
−
100 mF, 50 V, Aluminium Electrolytic
330 mF, 16 V, Aluminium Electrolytic
1.0 A, 40 V, Schottky Rectifier, 1N5819
330 mH, Tech 39: 77 458 BV, Toroid Core, Through−Hole, Pin 3 = Start, Pin 7 = Finish
C2
+V
GND
+V
in
1
out1
out
3
LM2575−5.0
GND
http://onsemi.com
5
J1
ON/OFF
23
4
Output
2
Feedback
D1
1N5819
330 mH
L1
Figure 37. Printed Circuit Board
C
330 mF
/16 V
out
NOTE: Not to scale.
Copper Side
DC-DC Converter
Regulated Output
+V
GND
out1
out
= 5.0 V @ 1.0 A