lm2738xsdx National Semiconductor Corporation, lm2738xsdx Datasheet - Page 23
lm2738xsdx
Manufacturer Part Number
lm2738xsdx
Description
Lm2738 550khz/1.6mhz 1.5a Step-down Dc-dc Switching Regulator
Manufacturer
National Semiconductor Corporation
Datasheet
1.LM2738XSDX.pdf
(28 pages)
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LM2738Y Circuit Example 8
Part ID
U1
C1, Input Cap
C2, Output Cap
C3, Boost Cap
C4, Shunt Cap
D1, Catch Diode
D2, Boost Diode
D3, Zener Diode
L1
R1
R2
R3
R4
Part Value
1.5A Buck Regulator
10µF, 25V, X7R
(47µF, 6.3V, X5R) x 2 = 94µF
0.1µF, 16V, X7R
0.1µF, 6.3V, X5R
0.34V
1V
5.1V 250Mw SOT-23
8.7µH, 2.2A
8.87kΩ, 1%
10.2kΩ, 1%
100kΩ, 1%
4.12kΩ, 1%
F
@ 100mA Diode
F
Schottky 1.5A, 30V
FIGURE 17. LM2738Y (550kHz)
V
BOOST
Bill of Materials for
18V to 1.5V/1.5A
Derived from V
23
Part Number
LM2738Y
C3225X7R1E106M
C3216X5ROJ476M
C1005X7R1C104K
C1005X5R0J104K
CRS08
BAT54WS
BZX84C5V1
MSS7341-872NL
CRCW06038871F
CRCW06031022F
CRCW06031003F
CRCW06034121F
SHUNT
Manufacturer
National Semiconductor
TDK
TDK
TDK
TDK
Toshiba
Diodes, Inc.
Vishay
Coilcraft
Vishay
Vishay
Vishay
Vishay
30049144
www.national.com
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