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5
USB1_VBUS
USB1_PHY_VBUS
D
N.M.
TP1001
VCHG
C1012
C
C1013 100nf
C1001
C1002
4.7uf
4.7uf
C1003 100nf
[10]
VBATT_SENSE
C1004
R1009
0R
100nf
N.M.
VPH_PWR
B
battery need ID pin!
[10]
BATT_ID
A
BATT_GND
5
4
U1001-2
PM8941
CHARGING
139
OTG_IN
226
PHY_VBUS
172
USB_IN
173
USB_IN
181
USB_IN
PM8941_DC_IN
220
DC_IN
221
DC_IN
R1002
229
DC_IN
0R
R1005
212
DC_IN_OVP_CTRL
0R
228
DC_IN_OVP_SNS
C0402
OVPCP_DRV
171
OVP_CP_DRV
10nf
189
OVP_OUT
205
N.M.
OVP_OUT
VDRV_P
209
VDRV_P
C0402
217
VCHG_SNS
200
VCHG
216
VCHG
199
GND_CHG_HP
215
GND_CHG_HP
PMIC_BATFETCP_DRV
182
BATFET_CP_DRV
N.M.
210
VBAT_SNS
214
VBAT
222
VBAT
223
VBAT
C1011
10uF
Pay attention on layout
VBATT
R1008
0R
D1002
C1016
C1015
22uF
68pF
uClamp0571P
JP1001
BM22-4P-V(51)
N.M.
4
3
R1004 R1005 are working with Lenovo standard battery
which bond inner
BAT_ID is not conneted from battery to PMIC
PM8941_VREF_BAT_THM
R1003
1%
100K
218
1%
VREF_BAT
R1004
211
BAT_THERM
227
100K
BAT_ID
63
PM8941_VCOIN
C1005
VCOIN
187
PM8941_VPRE_BYP
C1006
VPRE_CAP
PM8941_VREG_CADC
169
VREG_BMS
177
VBATT_SENSE_M
BMS_CSM
193
VBATT_SENSE_P
VPH_PWR
BMS_CSP
201
C1009 100nf
VREG_SMBC
208
VSW_SMBC
L1001
CHG_VSW
224
VSW_SMBC
1.0uH
198
VPH_PWR
206
VPH_PWR
207
VPH_PWR
219
GND
185
GND
225
GND
It is recommended to connect
pin 185 of PM8941 to GND
directly using a dedicated via.
VBATT_SENSE
[10]
C1014
12pF
R1008 place near battery connector
Remove R1008 at EVT when no issue is found.
D1001 D1002 place near battery connector
BATT_THERM
[26,27]
Battery Connector
3
2
R1006
1%
100K
BATT_ID
[10]
VPH_PWR
1uF
100nf
C1007
10V
470nf
C0402
VPH_PWR
N.M.
Rev.E
NOTE: A 5K ohm resistor is required in parallel with C3789
as a workaround for issue 3 as mentioned in
PM8941 DRG (80-NA555-4)
C1008
NOTE: QCT platform uses battery FET Rds,on as sense resistor
22uF
for BMS. Customers can use external sense resistor if required.
If external sense resistor is not used, BMS_CSP and
BMS_CSM must be tied to VBAT of PMIC.
MAX17058X+T10 is from K860 design
<Variant Name>
<Variant Name>
<Variant Name>
Lenovo
Lenovo
Lenovo
Title
Title
Title
K920
K920
K920
Size
Size
Size
Document Number
Document Number
Document Number
A4
A4
A4
P10. PM8941 CHARGING
P10. PM8941 CHARGING
P10. PM8941 CHARGING
Date:
Date:
Date:
Tuesday, August 05, 2014
Tuesday, August 05, 2014
Tuesday, August 05, 2014
2
1
D
C
B
A
Rev
Rev
Rev
0.11
0.11
0.11
Sheet
Sheet
Sheet
10
10
10
of
of
of
58
58
58
1
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