S-8355 Seiko Instruments, S-8355 Datasheet - Page 36

• Manufacturer Part Number: S-8355
• Description: (S-8355 - S-8358) PWM/PFM SWITCHING CONTROL STEP-UP SWITCHING REGULATOR
• Manufacturer: Seiko Instruments

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Caution The above connection diagram and constant will not guarantee successful operation. Perform through
Condition Output Voltage
STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8355/56/57/58 Series
Application Circuits
1. LCD Power Supply
1
2
3
The following example is an application power supply circuit (15 V / 20 V output) to drive an LCD panel, and its
characteristics.
evaluation using the actual application to set the constant.
V
IN
15 V
20 V
10 V
C
IN
+
−
S-8356M50 CDRH5D18-220
S-8356M50 CDRH5D18-220
S-8356Q50 CDRH5D18-100
IC
L
TR
Figure 26 Power Supply Circuit Example for LCD
L Type Name
Seiko Instruments Inc.
TR Type Name SD Type Name
ON
VDD
EXT
MCH3405
FDN337N
MCH3405
Table 30
/
OFF
S-8356M50,
S-8356Q50
SD
VSS
MA2Z748
MA2Z748
MA729
VOUT
C
C
(20 V, 10 µ F)
(25 V, 10 µ F)
(20 V, 10 µ F)
F93
F93
F93
C
R
R
L
A
B
580 k Ω 300 k Ω
575 k Ω 200 k Ω
560 k Ω 560 k Ω
C
R
L
a
+
−
Rev.6.6
R
b
V
OUT
15 pF
15 pF
15 pF
Cc
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