DC-GH5
POWER(3) BLOCK DIAGRAM
IC6402
(SYSTEM IC)
IC2001
(VENUS ENGINE)
PW UNREG SYS
(PW DRAM1.2V)
(PW DRAM1.8V)
(PW DRAM1.2V A)
(POWER CTL SW)
IC2503
(REGULATOR)
2
3
4
1 VOUT
GND
VCC
CE
IC2502
(REGULATOR)
2
3
4
1 VOUT
GND
VCC
CE
IC2504
(LOAD SW)
3
2
1
4 VOUT
VIN
GND
CE
BE35
BC35
T2
N1
POWERCTLSW
L9
N3
E3
B20
A7
BA37
BG37
GND
IC2506
(LOAD SW)
4
3
1 VOUT VIN
CE
QR2501
QR1801
(SHT6R5V CTL)
VREGA
(From IC1001-29)
PW UNREG
IC1901
(DC/DC CONTROLLER)
(BACKUP CTL4)
BACKUP CTL4 K11
PW D1.8V
PW D1.2V
(BACKUP CTL3)
BACKUP CTL3
J9
2
PW SHT6.5V
CD1802
IC1801
(REGULATOR)
1
2
3
8
10
9
GDRV
VDD
RC
DIS/EN
SS
BP
4
7
ISNS
COMP
5
6
GND
FB
8
7
6
5
1
2
3
4
Q1801
PW EVER 3V
PW EVER 3V
GND
SW
SW
SW
SW
OC
ZC
XCON
BST
V5
PWM
TRIP
+
+
VSNS
EN
+
NOC
VREF
MODE
CONTROL
MODE
ON-TIME
SELECTION
CONTROL LOGIC
.
ON/OFF TIME
.
MINIMUM ON/OFF
.
SKIP/FCCM
.
OCL/OVP/UVP
.
DISCHARGE
V5OK
+
4.4 V/4.0 V
+
5-V UVLO
GSNS
DISCHARGE
PHASE
COMPENSATION
ULQ
CONTROL
T
ON
ONE-
SHOT
REFIN
REFIN2
SLEW
+
V
REFIN
VIN
VIN
VIN
PGND
PGND
PGND
PGND
PGND
LP#
OCL
REFERENCE
VOLTAGE
REFERENCE
DETECTION
REFERENCE
SOFT-START
TRIP
DETECTION
28
21
26
3
5
15
16
17
7
6
9
18
12
13
14
19
11
10
8
23
25
24
20
2
T4
D12
IC1903
(REGULATOR)
3
4
5
2
1
VSS
VIN VOUT
CE
NC
PW D1.0V B
PW D1.0V A
PW D1.0V
CD1901
22
IC1951
(DC/DC CONTROLLER)
GND
SW
SW
SW
SW
OC
ZC
XCON
BST
V5
PWM
TRIP
+
+
VSNS
EN
+
NOC
VREF
MODE
CONTROL
MODE
ON-TIME
SELECTION
CONTROL LOGIC
.
ON/OFF TIME
.
MINIMUM ON/OFF
.
SKIP/FCCM
.
OCL/OVP/UVP
.
DISCHARGE
V5OK
+
4.4 V/4.0 V
+
5-V UVLO
GSNS
DISCHARGE
PHASE
COMPENSATION
ULQ
CONTROL
T
ON
ONE-
SHOT
REFIN
REFIN2
SLEW
+
V
REFIN
VIN
VIN
VIN
PGND
PGND
PGND
PGND
PGND
LP#
OCL
REFERENCE
VOLTAGE
REFERENCE
DETECTION
REFERENCE
SOFT-START
TRIP
DETECTION
28
21
26
3
5
15
16
17
7
6
9
18
12
13
14
19
11
10
8
23
25
24
20
2
PW D0.9V
CD1951
22
CH1 1.22V
SHT UNREG
CD1881
IC1881
(REGULATOR)
2
3
4
1
VOUT
VSS
VIN
EN
PW HDMI5V
Q1803
BK26
(BG POW ON)
AD6
PW BG D3.6V
D10
E11
(BACKUP CTL1)
BACKUP CTL1
K9