diff --git a/esphome/components/MCP3428/__init__.py b/esphome/components/mcp3428/__init__.py
similarity index 100%
rename from esphome/components/MCP3428/__init__.py
rename to esphome/components/mcp3428/__init__.py
diff --git a/esphome/components/MCP3428/mcp3428.cpp b/esphome/components/mcp3428/mcp3428.cpp
similarity index 100%
rename from esphome/components/MCP3428/mcp3428.cpp
rename to esphome/components/mcp3428/mcp3428.cpp
diff --git a/esphome/components/MCP3428/mcp3428.h b/esphome/components/mcp3428/mcp3428.h
similarity index 100%
rename from esphome/components/MCP3428/mcp3428.h
rename to esphome/components/mcp3428/mcp3428.h
diff --git a/esphome/components/MCP3428/sensor/__init__.py b/esphome/components/mcp3428/sensor/__init__.py
similarity index 100%
rename from esphome/components/MCP3428/sensor/__init__.py
rename to esphome/components/mcp3428/sensor/__init__.py
diff --git a/esphome/components/MCP3428/sensor/mcp3428_sensor.cpp b/esphome/components/mcp3428/sensor/mcp3428_sensor.cpp
similarity index 100%
rename from esphome/components/MCP3428/sensor/mcp3428_sensor.cpp
rename to esphome/components/mcp3428/sensor/mcp3428_sensor.cpp
diff --git a/esphome/components/MCP3428/sensor/mcp3428_sensor.h b/esphome/components/mcp3428/sensor/mcp3428_sensor.h
similarity index 100%
rename from esphome/components/MCP3428/sensor/mcp3428_sensor.h
rename to esphome/components/mcp3428/sensor/mcp3428_sensor.h