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LM20144MHE Datasheet

  • LM20144MHE

  • National Semiconductor [4A, PowerWise㈢ Adjustable Frequenc...

  • NSC

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LM20144
Typical Application Circuits
This section provides several application solutions with a bill
of materials. All bill of materials reference the below figure.
The compensation for these solutions were optimized to work
over a wide range of input and output voltages; if a faster
transient response is needed reduce the value of C
C1
and
calculate the new value for R
C1
as outline in the design guide.
30030601
FIGURE 11.
Bill of Materials (V
IN
= 5V, V
OUT
= 3.3V, F
SW
= 750kHz, I
OUTMAX
= 4A)
Designator
U1
C
IN
C
OUT
L
R
F
C
F
C
VCC
R
C1
C
C1
C
SS
R
T
R
FB1
R
FB2
Description
Synchronous Buck Regulator
100 碌F, 1210, X5R, 6.3V
100 碌F, 1210, X5R, 6.3V
1.5 碌H, 8.1m鈩?/div>
1鈩? 0603
100 nF, 0603, X7R, 16V
1 碌F, 0603, X5R, 6.3V
4.99 k鈩?
0603
2.2 nF, 0603, X7R, 25V
33 nF, 0603, X7R, 25V
150 k鈩?
0603
31.6 k鈩?
0603
10.2 k鈩?
0603
Part Number
LM20144
GRM32ER60J107ME20
GRM32ER60J107ME20
MSS1038-152NL
CRCW06031R0J-e3
GRM188R71C104KA01
GRM188R60J105KA01
CRCW06034991F-e3
VJ0603Y222KXXA
VJ0603Y333KXXA
CRCW06031503F-e3
CRCW06033162F-e3
CRCW06031022F-e3
Manufacturer
National Semiconductor
Murata
Murata
Coilcraft
Vishay-Dale
Murata
Murata
Vishay-Dale
Vishay-Vitramon
Vishay-Vitramon
Vishay-Dale
Vishay-Dale
Vishay-Dale
Qty
1
1
1
1
1
1
1
1
1
1
1
1
1
Bill of Materials (V
IN
= 3.3V to 5V, V
OUT
= 1.2V, F
SW
= 750kHz, I
OUTMAX
= 4A)
Designator
U1
C
IN
C
OUT
L
R
F
C
F
C
VCC
R
C1
C
C1
C
SS
R
T
R
FB1
R
FB2
Description
Synchronous Buck Regulator
100 碌F, 1210, X5R, 6.3V
100 碌F, 1210, X5R, 6.3V
1 碌H, 6m鈩?/div>
1鈩? 0603
100 nF, 0603, X7R, 16V
1 碌F, 0603, X5R, 6.3V
3.24 k鈩?
0603
3.3 nF, 0603, X7R, 25V
33 nF, 0603, X7R, 25V
150 k鈩?
0603
4.99 k鈩?
0603
10 k鈩?
0603
Part Number
LM20144
GRM32ER60J107ME20
GRM32ER60J107ME20
MSS1038-102NL
CRCW06031R0J-e3
GRM188R71C104KA01
GRM188R60J105KA01
CRCW06033241F-e3
VJ0603Y332KXXA
VJ0603Y333KXXA
CRCW06031503F-e3
CRCW06034991F-e3
CRCW06031002F-e3
Manufacturer
National Semiconductor
Murata
Murata
Coilcraft
Vishay-Dale
Murata
Murata
Vishay-Dale
Vishay-Vitramon
Vishay-Vitramon
Vishay-Dale
Vishay-Dale
Vishay-Dale
Qty
1
1
1
1
1
1
1
1
1
1
1
1
1
www.national.com
18

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