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L810-MiniPCIeHardware User Manual
Page 11 of 26
3 Power Supply
The circuit and PCB layout design for power supply are very important to the whole product, and the
design shall be conducted in accordance with the recommended design requirements.
3.1 Power Supply Requirements
The 3.3VAUX power supply for the module should meet the requirement as follows:
Parameter
Minimum value
Typical value
Maximum value
Unit
Operating Voltage Range
3.0
3.3
3.6
V
Note:
The Operating Voltage Range MUST never be exceeded. If the power source is under the
minimum value, the module will shutdown automatically; and may cause permanent hardware
failure if it goes above 3.6V.
3.2 Power Supply Timing Requirement
3.2.1 Rising Time
As for the power supply to the module, the rising time for voltage after powering on is described in Figure
3-1:
Figure3-1 Rising Time for Power Supply
Timing description
Requirement
Tr1
Rising time from 2.5V to 3.3V
less than 5 ms
