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LM2773TL/NOPB датащи(PDF) 12 Page - Texas Instruments

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номер детали LM2773TL/NOPB
подробное описание детали  LM2773 Low-Ripple 1.8V/1.6V Spread-Spectrum Switched Capacitor Step-Down Regulator
PDF  18 Pages
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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LM2773TL/NOPB датащи(HTML) 12 Page - Texas Instruments

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LM2773
SNVS554A – JANUARY 2008 – REVISED MAY 2013
www.ti.com
Table 1. LM2773 Performance with Different Capacitor Configurations, 1.8V Mode (1)
CAPACITOR
TYPICAL
CONFIGURATION
OUTPUT
(VIN = 3.6V)
RIPPLE
CIN = 1µF,
COUT = 4.7µF,
10mV
C1, C2 = 1µF
CIN = 1µF,
COUT = 2.2µF,
16mV
C1, C2 = 1µF
CIN = 0.47µF,
COUT = 4.7µF,
12mV
C1, C2 = 1µF
CIN = 0.47µF,
COUT = 3.3µF,
12mV
C1, C2 = 1µF
CIN = 0.47µF,
COUT = 3.3µF,
13mV
C1, C2 = 0.47µF
(1)
Refer to the text in the Recommended Capacitor Configurations section for detailed information on the data in this table
Layout Guidelines
Proper board layout will help to ensure optimal performance of the LM2773 circuit. The following guidelines are
recommended:
•
Place capacitors as close to the LM2773 as possible, and preferably on the same side of the board as the IC.
•
Use short, wide traces to connect the external capacitors to the LM2773 to minimize trace resistance and
inductance.
•
Use a low resistance connection between ground and the GND pin of the LM2773. Using wide traces and/or
multiple vias to connect GND to a ground plane on the board is most advantageous.
12
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Product Folder Links: LM2773



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