s-8460 Seiko Instruments Inc., s-8460 Datasheet - Page 21

• Manufacturer Part Number: s-8460
• Description: Step-up Or Down, Single-coil, Pwm Control Switching Regulator Controller
• Manufacturer: Seiko Instruments Inc.

*1. External parts : R
*2. External parts : R
*3. External parts : R
Rev.2.1
(25), (28)
(26), (29)
(27), (30)
Reference Data
Reference data are intended for use in selecting peripheral parts to the IC. The information therefore provides
characteristic data in which external parts are selected with a view of wide variety of IC applications. All data shows
typical value.
1. External Parts for Reference Data
STEP-UP OR DOWN, SINGLE-COIL, PWM CONTROL SWITCHING REGULATOR CONTROLLER
Table 4 External Parts List for Output Current vs. Efficiency, Input Voltage vs. Efficiency, Output
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
No.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
_00
S-8460B00AFT
Current vs. Output Voltage, and Input Voltage vs. Output Voltage Characteristics
Product Name
FB1
FB1
FB1
= 230 kΩ, R
= 150 kΩ, R
= 400 kΩ, R
Voltage
Output
3.3 V
2.5 V
5.0 V
3.3 V
2.5 V
5.0 V
*1
*2
*3
*1
*2
*3
FB2
FB2
FB2
= 100 kΩ, C
= 100 kΩ, C
= 100 kΩ, C
CDRH104R/22 μH
CDRH104R/10 μH
CDRH104R/47 μH
CDRH104R/22 μH
CDRH104R/10 μH
CDRH104R/47 μH
CDRH104R/22 μH
CDRH104R/10 μH
CDRH104R/47 μH
CDRH104R/22 μH
CDRH104R/10 μH
CDRH104R/47 μH
CDRH104R/22 μH
CDRH104R/22 μH
CDRH104R/22 μH
Inductor
Seiko Instruments Inc.
fzfb
fzfb
fzfb
= 330 pF
= 470 pF
= 220 pF
Transistor
Si2302DS
FDN335N
Si2302DS
FDN335N
CPH6401
CPH3403
CPH6401
CPH3403
CPH6401
CPH3403
CPH6401
CPH3403
CPH6401
FTS2001
FTS2001
MA2Q737
MA2Q737
MA2Q737
MA2Q737
MA2Q737
D1FH3
D1FH3
D1FH3
D1FH3
Diode
SD1
Capacitor
47 μF × 2
Output
47 μF × 2, 0.1 μF
Capacitor
Input
S-8460
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