Power Consumption; Functional Overview; Board Topology - Arduino UNO R3 Product Reference Manual

2.2 Power Consumption

Symbol Description
VINMax Maximum input voltage from VIN pad
VUSBMax Maximum input voltage from USB connector
PMax Maximum Power Consumption

3 Functional Overview

3.1 Board topology

Top view
Ref. Description
X1 Power jack 2.1x5.5mm
X2 USB B Connector
PC1 EEE-1EA470WP 25V SMD Capacitor
PC2 EEE-1EA470WP 25V SMD Capacitor
D1 CGRA4007-G Rectifier
J-ZU4 ATMEGA328P Module
Y1 ECS-160-20-4X-DU Oscillator
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Board topology
Ref.
U1
U3
U5
F1
ICSP
ICSP1
Arduino® UNO R3 / Rev. 01 - 25/11/2021
Arduino® UNO R3
Min
6
-
Description
SPX1117M3-L-5 Regulator
ATMEGA16U2 Module
LMV358LIST-A.9 IC
Chip Capacitor, High Density
Pin header connector (through hole 6)
Pin header connector (through hole 6)
Typ Max Unit
- 20 V
- 5.5 V
- xx mA