3. TECHNICAL BRIEF
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Only for training and service purposes
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Table3.2.1. Power Supply Domains
Device
Input pin
Power Device
Output
pin
Output Voltage(V)
Output
Current (mA)
Power Net
MT6255 AVDD43_
VCORE
DC-DC
VCORE
1.2
350
VCORE_1V2
AVDD43_VA
AVDD43_VD1
AVDD43_VD2
Essential LDOs
VA
2.8
40
AVDD_2V8
VIO18
1.8
400
VIO_1V8
VIO28
2.8
60
VIO_2V8
VMC
1.3/1.5/1.8/2.5/2.8/3.0/
3.3
200
VMC_3V3
VSIM
1.8/3.0
60
VSIM1
VSIM2
1.3/1.5/
1.8
/2.5/2.8/
3.0
/3.3
60
VSIM2
VRTC
2.8
2
VRTC_2V8
Basic Feature
LDOs
VUSB
3.3
60
VUSB_3V3
VBT
1.5/
1.8
/2.5/2.8/3.0/
3.1
/3.3
100
VBT_3V1
VCAMA
1.5/1.8/2.5/
2.8
150
VCMA_1V8
VCAMD
1.3/1.5/
1.8
/2.5/2.8/3.0/3.3
200
VCMAIO_1V8
Extra LDOs
VIBR
1.3/1.5/1.8/2.5/2.8/
3.0
/3.3
200
VIBR_3V0
2G Transceiver
LDOs
VTCXO
2.8
40
VTCXO_2V8
AVDD43_VRF
VRF
2.84
200
VRF_2V8
LED_KP
KPLED
150mA (8 steps)
KEY_BL0
Current Sink
ISINK0~5
6 x(24 mA,0.25V),Sharing(Individual Current
/ Enable control)
4/8/12/16/20/24 mA
BLED_EN
GLED_EN
RLED_EN