Schematics
CONFIDENTIAL AND PROPRIETARY
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DOCUMENT NO.:
Hardware DEPT.
COMPANY:
Spreadtrum communications, Inc.
PMU_POWER
VBAT power input for audioVBAT_AUD
VBAT_PA VBAT power input for audio speaker PA
VBATA VBAT power input for LDO
VBATB VBAT power input for KP_LED,VIB,VBATBK,Flash LED
VBATC VBAT power input for LDO
VBAT_DRV VBAT power input for DCDC
INPUT Description
800mA
40MIL Support bypass mode
E2 pin layout:must rout from memory side
1000mA
4000mA
4000mA
SC2721 DCDC output
Power Name
DCDCCPU
Output Voltage (V)
Output Current Default Voltage
0.9V
Default
ON4000mA
1.85V1000mA
DCDCWPA 0.4-3.6 1000mA OFF
Input Power
VBAT
DCDCGEN1V85
ON
DCDCGEN1V4
ON0.6-1.8 1.4V1500mA
0.4-1.4/1.05/0.9DCDCCORE 4000mA 0.9V ON
0.4-1.4/1.05/0.9
1.6-2.1
SC2721 LDO output
Output Voltage (V) Output Current Default Voltage
Default
Input Power
Power Name
LDO from
VDDCAMA 150mA1.8-3.3 OFF
OFF
VDDCAMMOT 100mA1.8-3.3
VDDSIM0 1.8-3.3 50mA OFF
VDDSIM1 1.8-3.3 50mA OFF
VDDSIM2 1.8-3.3 200mA OFF
VDDEMMCCORE
VDDSDCORE
VDDSDIO
VDD28
VBATBK
VDDVIB
VDDKPLED
VDDWIFIPA
VDDDCXO
VDDUSB33
VDDCAMD
1.8-3.3
1.8-3.3
1.8-3.3
1.8-3.3
2.6-3.2
1.8-3.3
1.8-3.3
1.8-3.3
1.8-3.3
1.8-3.3
1.0-1.4
400mA
400mA
100mA
200mA
2mA
100mA
LDO:50mA/Sink:0.9-79.2mA
400mA
10mA
60mA
400mA
3.0V
3.0V
2.8V
3.0V
3.3V
1.8V
3.3V
ON
ON
ON
ON
ON
OFF
ON
ON
OFF
OFF
VDD_MEM
VDDCAMIO
AVDD18
VDDRF1V25
1.1-1.9
1.1-1.9
1.1-1.4
1.1-1.4 800mA
200mA
200mA
200mA
1.8V
ON
OFF
ON
OFF
VDD_CON 1.1-1.6 400mA OFF
DCDC GEN1V4
LDO from
VBAT
VDDRF18 1.1-1.9 200mA
1.8V ON
2.8V
2.8V
3.0V
1.8V
1.8V
1.8V
3.3V
1.2V
DCDC GEN1V85
LDO from
1uf
4.7uf
1uF
1uF
1uF
1uF
1uF
default NF
1uF
1uF
1uF
1uF
default NF
1uF
1uF
EXT DCDC ARM
I2C Slave Address:0XC0
I2C-Compatible Interface Up to 3.4Mbps
C0316
2.2uF
C0321
10uF
C0320
4.7uF
C0323
NC
C0318
4.7uF
C0300
10uF
C0301
10uF
L0300 0.33uHC0302
22uF
C0303
22uF
L0301 0.33uH
L0302 1.0uHC0306
22uF
L0308
2.2uH
C0319
22uF
L0304
2.2uH
C0315
10uF
C0310
1.0uF
C0309
NC
C0304
NC
C0317
NC
C0314
1.0uF
C0308
NC
C0334
1.0uF
C0307
1.0uF
C0325
4.7uF
C0313
NC
C0311
NC
C0322
NC
C0336
NC
C0305
NC
C0332
NC
(Sink:15-240mA)
GND
TYPE-C
FUEL GAUGE
BATDET
CHARGE
2 of 2POWER
NC
LDO FROM DCDC GEN1V85
LDO/SINK FROM VBAT
LDO FROM VBAT
DCDC WPA
DCDC GEN1V85
DCDC GEN1V4
DCDC CPU
DCDC CORE
VBATDRV
VBAT
LDO FROM DCDC GEN1V4
(200mA/ON)
(1.8-3.3V/2.8V)
(150mA/OFF)
(1.8-3.3V)
(1.8-3.3V)
(100mA/OFF)
(10mA/ON)
(1.8-3.3V/1.8V)
(400mA/ON)
(1.8-3.3V/3.0V)
(400mA/ON)
(1.8-3.3V/3.0V)
(100mA/ON)
(1.8-3.3V/3.0V)
(50mA/OFF)
(1.8-3.3V)
(50mA/OFF)
(1.8-3.3V)
(200mA/OFF)
(1.8-3.3V)
(1.8-3.3V/3.3V)
(60mA/ON)
(1.8-3.3V)
(400mA/OFF)
(1.8-3.3V)
(LDO:100mA/OFF)
(LDO:50mA/OFF/Sink:0.9-79.2mA)
(1.8-3.3V)
(800mA/ON)
(1.1-1.4V/1.2V)
(1.1-1.4V)
(200mA/OFF)
(400mA/OFF)
(1.0-1.4V)
(1.1-1.6V)
(400mA/OFF)
(200mA/ON)
(1.1-1.9V/1.8V)
(1.1-1.9V/1.8V)
(200mA/ON)
(200mA/OFF)
(1.1-1.9V)
(0.4-1.4V/1.05V/0.9V)
(4000mA/ON)
(0.4-1.4V/1.05V/0.9V)
(4000mA/ON)
(1000mA/ON)
(1.6-2.1V/1.85V)
(0.4-3.6V)
(1000mA/OFF)
(1500mA/ON)
(0.6-1.8V/1.4V)
(FOR AUDIO)
(FOR AUDIO PA)
(FOR LDO)
(FOR DCDC CTRL)
(500mA)
(FOR DCDC)
(CAP GROUP1)
(FOR DCDC)
(CAP GROUP2)
(FOR DCDC)
(CAP GROUP3)
P4
VBAT_AUD
P10
VBAT_PA
F10
VBATA
F11
VBATA
G10
VBATA
G11
VBATA
H7
VBATB
A2
VBAT_DRV
A3
VBAT_DRV
A8
VBAT_DRV
B2
VBAT_DRV
B3
VBAT_DRV
B8
VBAT_DRV
C14
VBAT_DRV
C15
VBAT_DRV
A6
LX_CORE
A7
LX_CORE
B7
LX_CORE
D8
FB_CORE
D7
FB_CORE_N
A4
LX_CPU
A5
LX_CPU
B5
LX_CPU
D4
FB_CPU
E4
FB_CPU_N
C1
LX_GEN1V4
C2
LX_GEN1V4
H5
VDCDC_GEN1V4
H6
VDCDC_GEN1V4
B1
LX_GEN1V85
G5
VDCDC_GEN1V85
B15
LX_WPA
E11
FB_WPA
D13
WPA_APCIN
G12
VDDEMMCCORE
G13
VDDSD
G14
VDDSDIO
E14
VDDSIM0
E12
VDDSIM1
H14
VDDSIM2
F14
VDDUSB33
H15
VDDWIFIPA
G15
VDD28
F12
VDDCAMA
E15
VDDCAMMOT
J3
VDDDCXO
H4
VDDCON
D1
AVDD18
F2
VDDRF18
D2
VDDCAMIO
F1
VDDMEM
E2
VDDMEM_FB
G4
VDDRF1V25
J4
VDDCAMD
N11
VDDVIBR
P11
VDDKPLED
L11
FLASH_IB
A1
NC
A15
NC
P1
NC
P15
NC
P14
VBAT_SENSE
P13
ISENSE
N15
VDRV
N14
VCHG
K13
CHG_PD
F4
OPTION
J10
BAT_DET
N13
SENSE_P
N12
SENSE_N
L12
SW
L10
CC1
M11
CC2
G7
VSS
G8
VSS
G9
VSS
H8
VSS
H9
VSS
J9
VSS
M9
VSS_PA
K3
VSS_TSX_1
M2
VSS_TSX_2
N3
VSS_TSX_3
B4
VSS_DRV
B6
VSS_DRV
C4
VSS_DRV
C6
VSS_DRV
D3
VSS_DRV
D5
VSS_DRV
D6
VSS_DRV
D14
VSS_DRV
D15
VSS_DRV
E5
VSS_DRV
U0200-B
ASIC-SC2721G-166-0.4
R0310100K
C0327
NC
C0331
4.7uF
C0312
1.0uF
C0324
22uF
C0326
10uF
C0333
1.0uF
L0303 0.33uH
C0330
10uF
R0316
10K
A1
VSEL
A2
EN
A3
SCL
A4
VOUT
B1
SDA
B2
GND
B3
GND
B4
AGND
C1
GND
C2
GND
C3
GND
C4
GND
D1
VIN
D2
VIN
D3
SW
D4
SW
E1
VIN
E2
VIN
E3
SW
E4
SW
U0301
BGA_20_P040_200X160_H063_B026
0.6-1.23V/5A(Verifying)
C0329
22uF
C0328
22uF
T0300T0301
T0302
VBATBK
VBAT
VBAT
VBAT
VBAT
VDDCORE
VFBCORE
[12]
VDDARM1
VFBARM
[12]
VDD1V85
VDDWPA
APC_APT
[11]
VBAT_SENSE
[18]
BAT_TEMP_ADC
[18]
VDD2V8
VDDCAMA
VDDCAMMOT
VDDDCXO
VDDEMMCCORE
VDDSDCORE
VDDSIM0
VDDSIM1
VDDSIM2
VDDUSB
VDDWIFIPA
VDDSDIO
VIB_CTRL
VDDCAMCORE
VDDRF_1V25
VDDWCN
AVDD1V8
VDDRF_1V8
VDDCAMIO
USB_CCA
USB_CCB
SENSE_P
[18]
SENSE_N
[18]
VBAT
VDDMEM
VDDMEM
VFBCORE_N
[12]
VFBARM_N
[12]
KPLED_CTRL
ISENSE
[18]
VDRV
[18]
VCHG_D
[18]
FLASH_SINK
[16]
VBAT
VDDARM_EN
[5,11]
VDDARM0
I2C6_SDA
[11]
I2C6_SCL
[11]
VFBARM0
[12]