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LM27341 Datasheet(PDF) 26 Page - Texas Instruments

Part # LM27341
Description  2 MHz 1.5A/2A Wide Input Range Step-Down DC-DC Regulator with Frequency Synchronization
PDF  42 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM27341 Datasheet(HTML) 26 Page - Texas Instruments

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LM27341/2
VIN
PVIN
EN
BOOST
SW
FB
GND / DAP
VOUT
C2
L1
C1
C3
R1
R2
D1
SYNC
AVIN
CLK
2 MHz
ON
OFF
C5
C4
LM27341, LM27342, LM27341Q, LM27342Q
SNVS497D – NOVEMBER 2008 – REVISED FEBRUARY 2010
www.ti.com
LM27341/LM27342 Circuit Examples
Figure 40. VIN = 7 - 16V, VOUT = 5V, fSW = 2 MHz, IOUT = Full Load
Figure 41. LM27342 Efficiency vs. Load Current
Figure 42. Transient Response
IOUT = 100 mA - 2A @ slewrate = 2A / µs
Table 2. Bill of Materials for Figure 40
Part Name
Part ID
Part Value
Part Number
Manufacturer
Buck Regulator
U1
1.5 or 2A Buck Regulator
LM27341 / LM27342
TI
CPVIN
C1
10 µF
GRM32DR71E106KA12L
Murata
CBOOST
C2
0.1 µF
GRM188R71C104KA01D
Murata
COUT
C3
22 µF
C3225X7R1C226K
TDK
COUT
C4
22 µF
C3225X7R1C226K
TDK
CFF
C5
0.18 µF
0603ZC184KAT2A
AVX
Catch Diode
D1
Schottky Diode Vf = 0.32V
CMS06
Toshiba
Inductor
L1
2.2 µH
CDRHD5D28RHPNP
Sumida
Feedback Resistor
R1
560
Ω
CRCW0603560RFKEA
Vishay
Feedback Resistor
R2
140
Ω
CRCW0603140RFKEA
Vishay
26
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Copyright © 2008–2010, Texas Instruments Incorporated
Product Folder Links: LM27341 LM27342 LM27341Q LM27342Q



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