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LM27341 Datenblatt(PDF) 32 Page - Texas Instruments

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

LM27341 Datenblatt(HTML) 32 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
1 MHz
ON
OFF
C5
C4
LM27341, LM27342, LM27341Q, LM27342Q
SNVS497D – NOVEMBER 2008 – REVISED FEBRUARY 2010
www.ti.com
Figure 58. VIN = 3.3 - 16V, VOUT = 1.8V, fSW = 1 MHz, IOUT = Full Load
Figure 59. LM27342 Efficiency vs. Load Current
Figure 60. Transient Response
IOUT = 100 mA - 2A @ slewrate = 2A / µs
Table 8. Bill of Materials for Figure 58
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 uF
C3225X7R1C226K
TDK
COUT
C4
22 uF
C3225X7R1C226K
TDK
CFF
C5
3.9 nF
GRM188R71H392KA01D
Murata
Catch Diode
D1
Schottky Diode Vf = 0.32V
CMS06
Toshiba
Inductor
L1
1.8 µH
CDRH5D18BHPNP
Sumida
Feedback Resistor
R1
12 k
Ω
CRCW060312K0FKEA
Vishay
Feedback Resistor
R2
15 k
Ω
CRCW060315K0FKEA
Vishay
32
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Copyright © 2008–2010, Texas Instruments Incorporated
Product Folder Links: LM27341 LM27342 LM27341Q LM27342Q



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