S-8327 Seiko, S-8327 Datasheet - Page 38

• Manufacturer Part Number: S-8327
• Description: (S-8323 / S-8327) SMALL PACKAGE PWM CONTROL STEP-UP SWITCHING REGULATOR
• Manufacturer: Seiko

Table 3 shows the efficiency of the external parts.
Inductor
Diode
(Schottkey)
Output capacitor
External transistor
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
No.
No.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
SMALL PACKAGE PWM CONTROL STEP-UP SWITCHING REGULATOR
Part
V
V
2V
2V
3V
3V
3V
3V
5V
5V
5V
3V
3V
3V
3V
5V
5V
5V
5V
OUT
OUT
Model name
2SD1628G Sanyo
Table 1
LQH4N
LQH3C
MA720
CD105
MA735
name of L
name of L
LQH3C
LQH4N
LQH4N
CD54
CD54
CD54
CD54
CD54
CD54
CD105
CD105
CD54
D75C
CD105
CD105
CD54
D75C
CD54
D75C
F93
Model
Model
Seiko Instruments Inc.
S-8323 Series
Table 2 S-8327 Series
Sumida
Matsushita forward current 500mA (at V
Nichicon
Murata
Toko
220 H
220 H
220 H
47 H
100 H
220 H
47 H
100 H
220 H
22 H
22 H
47 H
47 H
22 H
22 H
47 H
47 H
Vendor
L value
L value
forward current 1A (at V
L value
100 H
220 H
220 H
220 H
100 H
22 H
47 H
47 H
Table 3
MA720
300
300
1K
1K
1K
1K
1K
1K
Rb
D
resistance
0.10
0.37
0.70
1.57
5.40
8.40
0.20
0.40
0.01 F
0.0022 F
0.0022 F
0.0022 F
0.01 F
0.0022 F
0.0022 F
0.0022 F
DC
22 F
C
Cb
OUT
Max allowable
F
=0.5V)
current
1.95A
0.72A
0.52A
0.35A
0.11A
0.07A
0.76A
0.50A
F
=0.55V)
MA735
MA735
MA720
MA720
MA735
MA735
MA720
MA720
D
S-8323/8327 Series
47 F 2
47 F 2
47 F
47 F
47 F 2
47 F 2
47 F
47 F
Diameter
10.0mm
4.5mm
7.6mm
5.8mm
3.2mm
C
OUT
5.4mm
2.6mm
5.1mm
4.5mm
2.0mm
Height
37