Nokia 2650 - Regulators

RH-53/54
Nokia Customer Care 8-System Module
14 COMPANY CONFIDENTIAL Issue 2 06/2005
Copyright © 2005 Nokia. All Rights Reserved.
its 3.6V / 5.0V / 5.25V). Charge current is monitored by measuring the voltage drop across a
0.22 ohm resistor.
■ Regulators
Overview of the regulator state in ‘Active’, ‘Acting dead’ and ‘Sleep’ mode is shown in table 1.
Table 1: Overview
Regulator Active Acting dead Sleep
VFLASH1 Enabled Enabled Sleep mode
VFLASH2 Disabled (Not used) Disabled (Not used) Disabled (Not used)
VANA Enabled Enabled Disabled
VIO Enabled Enabled Sleep mode
VCORE Enabled Enabled Sleep mode
VSIM Enabled (voltage control-
led by software)
Disabled Enabled/Sleep mode
(depending on SIM
card)
VR1A Enabled Enabled Disabled
VR1B Disabled (Not used) Disabled (Not used) Disabled (Not used)
VR2 Enabled (voltage control-
led by software)
Enabled (voltage control-
led by software)
Enabled (voltage con-
trolled by software)
VR3 Enabled Disabled Disabled
VR4 Disabled Disabled Disabled
VR5 Enabled Disabled Disabled
VR6 Enabled Disabled Disabled
VR7 Enabled Disabled Disabled
IPA1-2 Disabled (not used) Disabled (not used) Disabled (not used)