Datasheet

LM27341/2
V
IN
PVIN
EN
BOOST
SW
FB
GND / DAP
V
OUT
C2
L1
C1
C3
R1
R2
D1
SYNC
AVIN
CLK
2 MHz
ON
OFF
C5
C4
LM27341, LM27342, LM27341-Q1, LM27342-Q1
www.ti.com SNVS497E –NOVEMBER 2008–REVISED APRIL 2013
Figure 46. V
IN
= 5 - 16V, V
OUT
= 3.3V, f
SW
= 2 MHz, I
OUT
= Full Load
Figure 47. LM27342 Efficiency vs. Load Current Figure 48. Transient Response
I
OUT
= 100 mA - 2A @ slewrate = 2A / µs
Table 4. Bill of Materials for Figure 46
Part Name Part ID Part Value Part Number Manufacturer
Buck Regulator U1 1.5 or 2A Buck Regulator LM27341 / LM27342 TI
C
PVIN
C1 10 µF GRM32DR71E106KA12L Murata
C
BOOST
C2 0.1 µF GRM188R71C104KA01D Murata
C
OUT
C3 22 µF C3225X7R1C226K TDK
C
OUT
C4 22 µF C3225X7R1C226K TDK
C
FF
C5 0.18 µF 0603ZC184KAT2A AVX
Catch Diode D1 Schottky Diode Vf = 0.32V CMS06 Toshiba
Inductor L1 1.5 µH CDRH5D18BHPNP Sumida
Feedback Resistor R1 430 Ω CRCW0603430RFKEA Vishay
Feedback Resistor R2 187 Ω CRCW0603187RFKEA Vishay
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