All capacitors at input of LMS3655/35
should be rated to 50VDC.
V
OUT
: 3.3V/5V
I
OUT
: 5.5A/3.5A
Schematics
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SNVU542 – July 2017
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LMS36x5x-Q1 EVM User's Guide
Figure 3. Adjustable - Output Voltage Option Schematic
The adjustable output option uses an external resistor divider to define output voltage. The CFF capacitor can be adjusted to make the feedback
loop response faster for load transients. By lowering the total resistance of the feedback divider, the noise immunity can be increased.
NOTE:
To minimize noise coupling into the feedback pin, the maximum resistance recommended for the feedback resistor RFBT is 50 k
Ω
. The
feedback resistors RFBB and RFBT must be placed as close to the FB pin as possible, and RFBB must be grounded to the AGND pin.
