Telit Wireless Solutions LE910C series Hw Design Guide

LE910Cx mPCIe Hardware Design Guide
1VV0301510 Rev. 13 Page 21 of 73 2021-07-07
Not Subject to NDA
• The electrical design
• The thermal design
• The PCB layout.
4.3.1. Electrical Design Guidelines
The electrical design of the power supply strongly depends on the power source where
this power is drained.
• +5V input (typically PC internal regulator output)
• +12V input (typically automotive)
4.3.1.1. +5V Source Power Supply Design Guidelines
• The desired output for the power supply is 3.3V, so there's not a big difference
between the input source and the desired output and a linear regulator can be
used. A switching power supply will not be suitable because of the low drop out
requirements.
• When using a linear regulator, a proper heat sink shall be provided in order to
dissipate the generated heat.
• A Bypass low ESR capacitor of adequate capacity must be provided in order to cut
the current absorption peaks close to the Module, a 100μF capacitor is usually
suitable.
• Make sure the low ESR capacitor on the power supply output rated at least 10V.

Telit Wireless Solutions LE910C series Specifications

General

Brand	Telit Wireless Solutions
Model	LE910C series
Category	Wireless modules
Language	English