LinkIt 2523 HDK v11 User's Guide
© 2015 - 2016 MediaTek Inc.
Page 55 of 82
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Figure 34. POWER_COMMON_LDO
R2109
R / 0 / ohm / 0402
1
2
Differential
NTC
Rsense
4mil
BATTERY
CONNECTOR
4mil
Note: 21-2
Note: 21-1
Note: 21-5
Note: 21-4
Note: 21-3
Note: 21-6
Note 21-1:
Before you select BJT , please take power dissipation into consideration.
Note 21-3:
Note 21-4: 60mils from battery connector to MT2523 chip
1. Close to Battery Connector. (Rsense (R2103) <10mm)
Capacitor rating depends on Phone OVP spec.
Note 21-2:
Schematic design notice of "21_Power_Charging" page.
Based on your system level design , if better ESD performance is needed
Note 21-5: L style pin header for battery sub board plug in
Note: 21-7
Note 21-7: Thermal protection : battery with NTC
Note 21-6:
NTC
Title
Size
Date:
Sheet
of
MediaTek HDK MT2523G
21_POWER_Charging
C
21
99
Friday , June 24, 2016
Please place ESD2101 closed by R1137.
on your system, please refer to ESD performance enhance proposal.
Refer to MT6385 design notice.
3. Star connection from R2103 to BAT Connector
-> U2101's C -> R2103 -> VBAT)
2. Main path should be 40mil. (VBUS -> U2101's E,
BATTERY DTB
VCDT rating: 1.268V
60mils
(2) if battery NTC is 47kohm; R2106=61.9K (+/-1%)
(1) if battery NTC is 10kohm; R2106=16.9K (+/-1%)
C2102
C / 22 / uF / 0603
2
1
R2103
R / 0.1 / ohm / 0805 / 1%
R0805
1
2
Q2101
Q / PNMT6N1-LB
E
1
B
2
D
3
S
4
G
5
C
6
C
7
D
8
R2101
R / 1 / K / 0402
1
2
C2101
C / 1 / uF / 0603 / 50V
2
1
R2108
R / 0 / ohm / 0402
1
2
R2105
R / 1.5 / K / 0402
1
2
E
S
D
21
01
E
S
D
/
A
Z
58
25-
01
F
1
2
E
S
D
21
02
E
S
D
/
A
Z
57
25-
01
F
1
2
R2104
R / 330 / K / 0402 / 1%
1
2
R
210
7
NTC
/
NTCG
10
3J
F1
03
FT
/
04
02
1
2
R2106
R / 16.9 / K / 0402 / 1%
1
2
CON2101
5
4
6
2
3
1
R2102
R / 39 / K / 0402 / 1%
1
2
VBUS
VBAT_CONN
VBAT_CONN
VBAT_CONN
VA18
VDRV
[11]
VCDT
[11]
ISENSE
[11]
BATON
[11]
CHRLDO
[11]
BATSNS
[11]
D2101
D/NZ9F5V6ST5G