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LM2734 Datasheet(PDF) 21 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) 21 Page - National Semiconductor (TI)

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LM2734Y Circuit Examples (Continued)
Bill of Materials for Figure 15
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, 16V, X5R
C3216X5R1C226M
TDK
C3, Boost Cap
0.01µF, 16V, X7R
C1005X7R1C103K
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
4.3V 350mw SOT-23
BZX84C4V3
Diodes, Inc.
L1
22µH, 1.4A,
SLF7045T-220M1R3-1PF
TDK
R1
102k
Ω, 1%
CRCW06031023F
Vishay
R2
10.2k
Ω, 1%
CRCW06031022F
Vishay
R3
100k
Ω, 1%
CRCW06031003F
Vishay
20102350
FIGURE 15. LM2734Y (550kHz)
V
BOOST Derived from Series Zener Diode (VOUT)
15V to 9V/1A
www.national.com
21



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