LM2576T-012 ON Semiconductor, LM2576T-012 Datasheet - Page 23
![IC REG SW 3A 12V STEPDWN TO220-5](/photos/36/39/363974/to220-5_sml.jpg)
LM2576T-012
Manufacturer Part Number
LM2576T-012
Description
IC REG SW 3A 12V STEPDWN TO220-5
Manufacturer
ON Semiconductor
Type
Step-Down (Buck)r
Datasheet
1.LM2576D2T-ADJR4G.pdf
(28 pages)
Specifications of LM2576T-012
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
12V
Current - Output
3A
Frequency - Switching
52kHz
Voltage - Input
7 ~ 40 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-5 (Straight Leads)
Mounting Style
Through Hole
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM2576T-012G
Manufacturer:
ON Semiconductor
Quantity:
2 000
References
•
•
•
•
National Semiconductor LM2576 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
GND
+V
THE LM2576−ADJ STEP−DOWN VOLTAGE REGULATOR WITH 8.0 V @ 1.0 A OUTPUT POWER
in
+V
in
Figure 39. Printed Circuit Board Layout
Figure 38. Schematic Diagram of the 8.0 V @ 3.0 A Step−Down Converter Using the LM2576−ADJ
in
Unregulated
DC Input
+
= 10 V to 40 V
CAPABILITY. TYPICAL APPLICATION WITH THROUGH−HOLE PC BOARD LAYOUT
C1
100 mF
/50 V
C1
C2
D1
L1
R1
R2
C1
−
−
−
−
−
−
D1
Component Side
NOTE: Not to scale.
LM2576
100 mF, 50 V, Aluminium Electrolytic
1000 mF, 16 V, Aluminium Electrolytic
3.0 A, 40 V, Schottky Rectifier, 1N5822
150 mH, RL2444, Renco Electronics
1.8 kW, 0.25 W
10 kW, 0.25 W
L1
U1
+V
in
1
3
LM2576−ADJ
GN
D
4
R1
R2
Feedback
C2
ON/OFF
5
+
ON/OFF
2
Output
ON/OFF
GND
V
http://onsemi.com
out
out
LM2576
D1
1N5822
23
150 mH
L1
Figure 40. Printed Circuit Board Layout
C2
1000 mF
/16 V
NOTE: Not to scale.
R1
1.8 k
Copper Side
R2
10 k
V
V
R1 is between 1.0 k and 5.0 k
ref
out
= 1.23 V
+ V
ref
) 1.0 ) R2
V
Regulated
Output Filtered
out2
= 8.0 V @ 3.0 A
R1