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LM2575-12BT ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 6 Page - Micrel Semiconductor

๋ถ€ํ’ˆ๋ช… LM2575-12BT
์ƒ์„ธ๋‚ด์šฉ  52kHz Simple 1A Buck Regulator
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์ œ์กฐ์‚ฌ  MICREL [Micrel Semiconductor]
ํ™ˆํŽ˜์ด์ง€  http://www.micrel.com
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LM2575-12BT ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 6 Page - Micrel Semiconductor

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Micrel, Inc.
LM2575
May 2009
6
M9999-051209-B
Test Circuits and Layout Guidelines
LM2575
+
100ยตF
+VIN
1
3
GND
5
ON/OFF
2
OU TPU T
4
F E E DBAC K
L1
330ยตH
+
D1
MBR360
C OUT
470ยตF
R2
R1
VOUT
5.00V
7V - 40V
UN RE GUL A TE D
DC INPUT
CIN
L
O
A
D
CIN โ€” 100ยตF, 75V Aluminum Electrolytic
COUTโ€” 470ยตF, 15V Aluminum Electrolytic
D1 โ€” Schottky, MBR360
L1 โ€” 330ยตH, 415-0926 (AIE)
R1 โ€” 1k, 0.01%
R2 โ€” 3.065k, 0.01%
5-pin TO-220 socketโ€”2936 (Loranger Mfg. Co.)
4-pin TO-3 socketโ€”8112-AG7 (Augat Inc.)
LM2575-5.0
+
100ยตF
+VIN
1
3
GND
5
ON/OFF
2
OU TPU T
4
F E E DBAC K
L1
330ยตH
+
D1
MBR360
C OUT
220ยตF
VOUT
5.00V
Note: Pin numbers are for TO-220 Package
7V - 40V
UN RE GUL A TE D
DC INPUT
CIN
CIN โ€” 100ยตF, 75V Aluminum Electrolytic
COUTโ€” 330ยตF, 15V Aluminum Electrolytic
D1 โ€” Schottky,MBR360
L1 โ€” 330ยตH, 415-0926 (AIE)
5-pin TO-220 socket โ€” 2936 (Loranger Mfg. Co.)
4-pin TO-3 socket โ€” 8112-AG7 (Augat Inc.)
L
O
A
D
Figure 1.
As in any switching regulator, layout is very important.
Rapidly switching currents associated with wiring
inductance generate voltage transient switch can cause
problems. For minimal stray inductance and ground
loops, the length of the leads indicated by heavy lines
should be kept as short as possible. Single-point
grounding (as indicated) or ground plane construction
should be used for best results.


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