Datasheet

LM2738
V
IN
V
IN
EN
BOOST
SW
FB
GND
V
OUT
C3
L1
C2
R1
R2
D1
D2
ON
OFF
C1
R3
LM2738
www.ti.com SNVS556B –APRIL 2008–REVISED APRIL 2013
Figure 35. 8-Lead WSON PCB Dog Bone Layout
LM2738X Circuit Example 1
Figure 36. LM2738X (1.6MHz)
V
BOOST
Derived from V
IN
5V to 1.5V/1.5A
Table 2. Bill of Materials for Figure 36
Part ID Part Value Part Number Manufacturer
U1 1.5A Buck Regulator LM2738X Texas Instruments
C1, Input Cap 10µF, 6.3V, X5R C3216X5ROJ106M TDK
C2, Output Cap 22µF, 6.3V, X5R C3216X5ROJ226M TDK
C3, Boost Cap 0.1uF, 16V, X7R C1005X7R1C104K TDK
D1, Catch Diode 0.34V
F
Schottky 1.5A, 30V CRS08 Toshiba
D2, Boost Diode 1V
F
@ 100mA Diode BAT54WS Diodes, Inc.
L1 2.2µH, 1.9A, MSS5131-222ML Coilcraft
R1 8.87kΩ, 1% CRCW06038871F Vishay
R2 10.2kΩ, 1% CRCW06031022F Vishay
R3 100kΩ, 1% CRCW06031003F Vishay
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