Datasheet

LM2734
V
IN
EN
BOOST
SW
FB
GND
V
OUT
C3
L1
C2
R1
R2
D1
D2
ON
OFF
V
IN
C1
R3
LM2734Z
SNVS334E –JANUARY 2005–REVISED APRIL 2013 www.ti.com
Figure 17. V
BOOST
Derived from V
OUT
12V to 3.3V/1A
Table 3. Bill of Materials for Figure 17
Part ID Part Value Part Number Manufacturer
U1 1A Buck Regulator LM2734ZX Texas Instruments
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
D1, Catch Diode 0.34V
F
Schottky 1A, 30VR SS1P3L Vishay
D2, Boost Diode 0.6V
F
@ 30mA Diode BAT17 Vishay
L1 3.3µH, 1.3A ME3220–332MX Coilcraft
R1 31.6kΩ, 1% CRCW06033162F Vishay
R2 10.0 kΩ, 1% CRCW06031002F Vishay
R3 100kΩ, 1% CRCW06031003F Vishay
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