User Guide

Signal

name

Regulator Sleep Idle Nominal

voltage

Main user Notes

VIO_V AVILMA ON ON 1.82 Not used

VBACK AVILMA ON ON 2.5 RTC circuitry

VSIM1 AVILMA ON ON 1.8/3.0 Sim card

VSIM2 AVILMA ON ON 3.0 Digital microphone

VAUX AVILMA OFF OFF 2.78 Accelerometer, Hall

switches, 2nd

camera

VANA AVILMA ON ON 2.5 Vilma internal

VR1 AVILMA OFF ON 2.5 VCTXO

VRFC AVILMA ON OFF 1.8 RAPIDO converter

VRCP1 AVILMA OFF OFF 4.75 RFmodule RF active

VIO LM3677 ON ON 1.8 Rapido , Betty I/O

VDRAM LM3677 ON ON 1.8 M3 Memory

VCORE TPS62350 ON ON 1.2 Rapido core

VDAC LP3985 3.0 DAC33 On when

used

VCAM_1V8 LM3677 OFF OFF 1.8 Julie, LP5952

VCAM_1V3 OFF OFF 1.3 Julie,core

VCAM_2V8 OFF OFF 2.8 Main camera

VSD LP3930 OFF OFF 2.9 SD card On when

used

V_ELVDD TPS65136 OFF OFF 4.6 Falcon OLED Display

V_ELVSS TPS65136 OFF OFF -4.9 Falcon OLED Display

VCORE_WD LP5952 OFF OFF 1.5 White Dwarf Core

VBAT 3.6

VCORE BETTY OFF OFF 1.2 Not used

VDRAM_V AVILMA ON 1.82 Not used

VLED BETTY 6-18 Not used

Backup battery troubleshooting

Verify that the backup battery G2200 is empty (U<1V). Switch the phone on. Measure voltage of the battery

when the main battery is connected to the phone and the phone is switched on. Wait a few minutes and

monitor that the backup battery voltage rises. Switch off the phone, disconnect the main battery and monitor

that the voltage of the backup battery decreases. Normal behaviour of the voltage is described in the figures

below:

RM-412; RM-413

BB Troubleshooting

Issue 1 COMPANY CONFIDENTIAL Page 3 –7