Power Management - Samsung YP-R1 Service Manual

7-5 Power Management
POWER
P_1.8V
P_2.5V
V_DDCON
U602
MIC5365-2.5YMT
1 4
VOUT VIN
2 3
GND_1 EN
GND_2
5
P_3.0V
V_DDCON
GND
U606
MIC5365-3.0YMT
1 VOUT VIN 4
3
2 GND_1 EN
GND_2
5
GND
V_DDCON
P_3.3V
U603
MIC5365-3.3YMT
1 4
VOUT VIN
2 EN 3
GND_1
GND_2
5
GND
VDDA_1.2V
U605
RP100 P_1.8V
1 VOUT VDD
4
R643
2 GND CE
3
10K
GND
T601
INN_BATT
RESET_SW
T602 PWR_SW
GND
Samsung Electronics
P_3.0V
R639
200K
3 Drain
Gate 2
LED_PWM
Q601
KTK5132V
1 Source
TP6
V_DDCON
D601
KDS121V
R606
PWR_IN_DDCON
1K
PWR_ON_OFF
P3.3_CTL
CHG_STATUS
GND
GND
INN_BATT
8
U604
MAX17040G+T
7 P_3.0V
R633
150
6 1 CTG
5
2 CELL
R632
4
3 VDD
150
3
4 GND
2
1 GND
8P
CON601
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TP6
LED_DIMMING
LED+
C609
100nF
L604
D603
10uH
DSF05S30U
DLIM2 RST1
28
8
PG2
27 BAT
9
LX2
26 SYS
10
MAX8819
PV2
25 DC
11
U601
EN123
24 CEN
12
FB3
23 FB1
13
FB2
22 CISET
14
R618
4700nF
4.7K
C611
L603
4.7uH
300mA TP6 TP7
P_1.8V
1% OK
1% OK
1% OK!
P_3.0V
3 Drain
KTK5132V
Gate
CORE_CTL 2
Q602
1
GND
Source
CORE_CTL
HIGH : 1.05V
LOW : 0.82V
R631
GND
100K
RESET_SW
SDA I2C_DAT1
8
R628
SCL I2C_CLK1
7 100K
EO
6
SEO 5
GND
V_DDCON
P_3.0V
USB_P5V
INN_BATT
1% OK!
1% OK!
GND
200ms delay
TP6
GND
1.5
Current = 2000 x
R623
400mA
===> 300mA
P_3.0V
GND
P_1.2V
1% OK!
300mA
P_1.0V
GND
RESET_IN
GND
GND
Schematic Diagram
EXT_PWR
3.0V
CPU_RST
CHARGE_EN
TP6
TP7
LP_CTL
7-5