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LM2734 Datasheet(PDF) 19 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM2734
Description  Thin SOT23 1A Load Step-Down DC-DC Regulator
PDF  22 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2734 Datasheet(HTML) 19 Page - National Semiconductor (TI)

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LM2734Y Circuit Examples (Continued)
Bill of Materials for Figure 13
Part ID
Part Value
Part Number
Manufacturer
U1
1A Buck Regulator
LM2734Y
National Semiconductor
C1, Input Cap
10µF, 25V, X7R
C3225X7R1E106M
TDK
C2, Output Cap
22µF, 6.3V, X5R
C3216X5ROJ226M
TDK
C3, Boost Cap
0.01µF, 16V, X7R
C1005X7R1C103K
TDK
C4, Shunt Cap
0.1µF, 6.3V, X5R
C1005X5R0J104K
TDK
D1, Catch Diode
0.4V
F Schottky 1A, 30VR
SS1P3L
Vishay
D2, Boost Diode
1V
F @ 50mA Diode
1N4148W
Diodes, Inc.
D3, Zener Diode
5.1V 250Mw SOT-23
BZX84C5V1
Vishay
L1
15µH, 1.5A
SLF7045T-150M1R5
TDK
R1
8.87k
Ω, 1%
CRCW06038871F
Vishay
R2
10.2k
Ω, 1%
CRCW06031022F
Vishay
R3
100k
Ω, 1%
CRCW06031003F
Vishay
R4
4.12k
Ω, 1%
CRCW06034121F
Vishay
20102344
FIGURE 13. LM2734Y (550kHz)
V
BOOST Derived from VSHUNT
18V to 1.5V/1A
www.national.com
19



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