i88X
26
REF
CT
CS
V+
OUT
GND
F.B
IN
8
7
6
5
4
3
2
1
V
REF
OSC
U.V.LO
+
-
+
-
+
+
-
+
+
-
LO
S.C.P
PWM
ER.AMP
0.52V
30uA
1
2
3
4
8
7
6
5
REF
CT
CS
V+
IN
F.B
GND
OUT
NJM2368M(TE1) (X5185A00)
NJM2369M(X4922A00)
REGULATOR(VARIABLE)
TLC2932IPWR (XV064A00)
PLL
1
2
3
4
5
6
7
LOGIC V
DD
SELECT
VCO OUT
F
IN
-A
F
IN
-B
PFD OUT
LOGIC GND
14
13
12
11
10
9
8
VCO V
DD
R
BIAS
V
COIN
VCO GND
VCO INHBIT
PFD INHIBIT
NC
7
LOGIC GND
4
F
IN
-A
6
PFD OUT
12
V
COIN
13
R
BIAS
11
VCO GND
8
NC
1
LOGIC V
DD
5
F
IN
-B
CHARGE PUMP
DETECTOR
9
PFD INHIBIT
10
VCO INHBIT
14
VCO V
DD
3
VCO OUT
2
SELECT
BLAS CONTROL
VCO OUTPUT
MUX
1/2
TLC2933IPWR (X3320A00)
PLL
1
2
3
4
5
6
7
LOGIC V
DD
TEST
VCO OUT
F
IN
-A
F
IN
-B
PFD OUT
LOGIC GND
14
13
12
11
10
9
8
VCO V
DD
R
BIAS
V
CO IN
VCO GND
VCO INHBIT
PFD INHIBIT
NC
Phase
Comparator
LOGIC V
DD
(Digital)
(Digital)
LOGIC GND
TEST
FIN-A
VCO INHIBIT
PFD INHIBIT
NC
VCO GND
VCO IN
BIAS
VCO V
DD
VCO
FIN-B
VCO OUT
PFD OUT
1
2
3
4
5
6
7
14
13
12
11
10
9
8
MLN2:IC2
DM:IC702
UVLO
Start=7.2V
Stop=6.7V
Bandgap
Reference
5.0V 5%
ON/OFF
Control
BOOT
Vref=6.5V
TDS
OSC
f=250kHz
HighSide
Vref=Vout+5.8V
High/Low
MOS OFF
HighSide
Driver
Dead Time
Control
LowSide
Driver
Q
R
S
LowSide
Vref=6.5V
3V
1V
Error Amp
PWM Comp
2.45V
100 150
CLM Vth=
0.1 0.2V
5
28
6
8
25
23 18 21
11 14
16
9
4,26
3
2
1
30
32
27
3.3V/5V amp - ampOUT
S/S F/B
OCL -
OCL+ GND
V
GL
P.GND
V
OUT
V
DD
V
GH
V
B
Vbout
Vcc
Vref
R/C
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
S/S
F-B OCL-
OCL+
GND
R/C
Vcc
N/C
Vboot
V
GL
N/C
Vout
Vout
Vout
Vout
N/C
P.GND
amp-
N/C
ampOUT
N/C
Vref
3.3V/5V
GND
VB
N/C
VGH
N/C
VDD
VDD
VDD
VDD
N/C
MD1421N(X3787A00)
REGULATOR(3.3V/5.0V)
DM:IC930
DM:IC901, IC931
