LM2575D2T-ADJ ON Semiconductor, LM2575D2T-ADJ Datasheet - Page 24
![IC REG SW 1A ADJ STEPDWN D2PAK](/photos/36/39/363977/to263-5_sml.jpg)
LM2575D2T-ADJ
Manufacturer Part Number
LM2575D2T-ADJ
Description
IC REG SW 1A ADJ STEPDWN D2PAK
Manufacturer
ON Semiconductor
Type
Step-Down (Buck)r
Datasheet
1.LM2575T-5G.pdf
(28 pages)
Specifications of LM2575D2T-ADJ
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
1.23 ~ 37 V
Current - Output
1A
Frequency - Switching
52kHz
Voltage - Input
4.75 ~ 40 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
D²Pak, TO-263 (5 leads + tab)
Mounting Style
SMD/SMT
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
Part Number:
LM2575D2T-ADJ
Manufacturer:
ON/安森美
Quantity:
20 000
References
•
•
•
•
+V
National Semiconductor LM2575 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
in
GND
= +10 V to + 40 V
+V
Figure 39. PC Board Component Side
THE LM2575−ADJ STEP−DOWN VOLTAGE REGULATOR WITH 8.0 V @ 1.0 A OUTPUT POWER
in
Unregulated
DC Input
in
C1
Figure 38. Schematic Diagram of the 8.0 V @ 1.0 V Step−Down Converter Using the LM2575−Adj
100 mF
L1
/50 V
CAPABILITY. TYPICAL APPLICATION WITH THROUGH−HOLE PC BOARD LAYOUT
C1
C2
C3
D1
L1
L2
R1
R2
C1
NOTE: Not to scale.
−
−
−
−
−
−
−
−
U1 LM2575
D1
100 mF, 50 V, Aluminium Electrolytic
330 mF, 16 V, Aluminium Electrolytic
100 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
25 mH, TDK: SFT52501, Toroid Core, Through−Hole
1.8 k
10 k
+V
in
1
(An additional LC filter is included to achieve low output ripple voltage)
3
R2 R1
LM2575−Adj
J1
GND
4
C2
Feedback
L2
5
GND
C3
ON/OFF
+V
+V
out2
out1
2
out
Output
http://onsemi.com
D1
1N5819
330 mH
L1
24
C2
330 mF
/16 V
Figure 40. PC Board Copper Side
R2
10 k
R1
1.8 k
V
V
R1 is between 1.0 k and 5.0 k
ref
out
= 1.23 V
+ V
NOTE: Not to scale.
ref
25 mH
100 mF
) 1 ) R2
L2
/16 V
C3
R1
V
V
Regulated
Output Unfiltered
Regulated
Output Filtered
out1
out2
= 8.0 V @1.0 A
= 8.0 V @1.0 A