User's Manual

UL865-N3G Hardware User Guide
1VV0301177 Rev 2– 2015-04-20
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 26 of 70
Mod. 0805 2011-07 Rev.2
6.2. Power Consumption
UL865-N3G V2
Mode Average (mA) Mode description
SWITCHED OFF
Module supplied but Switched Off
Switched Off 180 uA
IDLE mode (WCDMA)
AT+CFUN=5 1.8 Disabled TX and RX; DRX7
Operative mode (WCDMA)
WCDMA Voice 152 WCDMA voice call (TX = 10dBm)
WCDMA HSDPA (0dBm) 187 WCDMA data call (Cat 8, TX = 0dBm)
WCDMA HSDPA (22dBm) 494 WCDMA data call (Cat 8, TX = 24dBm)
NOTE:
The electrical design for the Power supply should be made ensuring it will be capable of a
peak current output of at least 2 A.
6.3. General Design Rules
The principal guidelines for the Power Supply Design embrace three different design
steps:
 the electrical design
 the thermal design
 the PCB layout.
6.3.1. Electrical Design Guidelines
The electrical design of the power supply depends strongly from the power source where
this power is drained. We will distinguish them into three categories:
 +5V input (typically PC internal regulator output)
 +12V input (typically automotive)
 Battery