S-8541 Seiko Instruments, S-8541 Datasheet - Page 29

• Manufacturer Part Number: S-8541
• Description: (S-8540 / S-8541) 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
• Manufacturer: Seiko Instruments

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Inductor
Diode
Output
Capacity
(tantalum
electrolytic)
Transistor
(MOS FET)
Rev.3.2
Component
STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
_00
LDR655312T-4R7
CDRH6D28-220
RB491D
F920J476MB
F931A476MC
CPH6301
Product Name
Sanyo Electric
Manufacturer
Corporation
Corporation
Corporation
Corporation
Corporation
Nichicon
Nichicon
Co., Ltd.
Sumida
Rohm
TDK
Table 12 External parts function
Seiko Instruments Inc.
Forward current 1.0 A at V
V
47 μ F, 6.3 V
47 μ F, 10.0 V
V
I
D
rm
dss
22.0 μ H
L-Value
4.7 μ H
=3.0 A max., C
= 25V
=20 V max., V
Resistance
0.128 Ω
0.19 Ω
iss
DC
gss
=360 pF, R
=10 V max.,
F
= 0.45 V,
Maximum
on
Current
0.9 A
1.2 A
=110 m Ω
S-8540/8541 Series
Size (L × W × H)
6.5 × 5. 3 × 1.25
7.0 × 7.0 × 3.0
3.0 × 3.1 × 1.3
3.6 × 3.0 × 1.2
6.2 × 3.4 × 2.7
2.9 × 2.8 × 0.9
[mm]
29