1-1-3 DC/DC Converter ICs
■External Dimensions (HSOP16)
(Unit : mm)
1.35±–0.2
1+0.1/–0.05
(Between the root of leads and
back side)
(Heatsink thickness)
10.5±0.2
16
9
0 to 0.1
0 to 8°
1
8
Enlarged View of A
A
0.25+0.15/–0.05
S
0.10
S
12.2±–0.2
(Gate remains: Not included in dimensions)
(11)
Pin Assignment
(SPI-8001TW, SPI-8002TW)
Pin Assignment
(SPI-8003TW)
q
w
e
r
t
y
u
i
AGND
VIN1
o
!
!
!
!
!
!
!
AGND
VREF2
SS2
q
w
e
r
t
y
u
i
AGND
VIN1
o
!
!
!
!
!
!
!
AGND
ROSC
VREF2
SS2
VCC
VCC
SWout1
DGND1
SS1
DGND2
SWout2
C/E
SWout1
DGND1
SS1
DGND2
SWout2
C/E
VREF1
N.C
VIN2
VREF1
COSC
16
9
N.C
VIN2
1.27±0.25
0.4+0.15/–0.05
Product Mass : Approx.0.86g
■Block Diagram
V
IN
VIN
+
+
3
V
3
V
C1
C6
C1
C4
SPI-8001TW/SPI-8002TW
3V
SPI-8003TW
CC
CC
3V
C/E
15
14
OSC
RESET
V
C/E
Start
V
REF
PReg
OSC
fdown
TSD
UVLO
V
C/E
Start
V
REF
PReg
fdown
TSD
UVLO
C/E
RESET
1V
1V
10 Rosc
V
IN1
VIN1
2
8
2
f down
cut
Cosc
SS1
R7
OCP
OCP
f down
cut
3V
C9
3V
6
7
SS1
6
PWM
Logic
PWM
Logic
Drive
Drive
L1
L1
Di1
R5
R5
V
O1
VO1
SWOUT1
DGND1
SWOUT1
DGND1
4
5
4
5
+
+
+
–
+
–
+
–
–
–
–
7
V
REF1
–
VREF1
–
+
+
C2 C7
+
C4
PWM
PWM
Di1
Amp
3V
Amp
C2 C7
Buffer-Amp
Buffer-Amp
C5
15
16
V
IN2
VIN2
f down
cut
f down
cut
AGND
AGND
OCP
R1
R2
OCP
R1
R2
3V
11
SS2
12 SS2
11
PWM
Logic
PWM
Logic
Drive
Drive
R6
C5
L2
R6
C6
L2
V
O2
VO2
10
V
REF2
SWOUT2
DGND2
V
REF2
SWOUT2
DGND2
13
12
14
13
+
–
–
+
–
–
+
–
+
–
+
–
–
+
+
+
PWM
PWM
Di2
Di2
Amp
Amp
C3 C8
C3 C8
Buffer-Amp
Buffer-Amp
AGND
AGND
AGND
1, 9
AGND
1, 9
R3
R4
R3
R4
ICs
60
ETC [ ETC ]
