S-8340A25AFT-T2-X Datasheet, PDF (36/55 Pages) Seiko Instruments Inc – SWITCHABLE SWITCHING REGULATOR CONTROLLER

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8340/8341 Series
Rev.4.0_01
Performance Data for Parts
The following shows the performance of external parts.
Table 16 Performance of External Parts
Component Product Name Manufacturer
Inductor
CDRH5D18
Sumida
Corporation
CDRH124
Diode
CDRH6D28
RB491D
RB081L−20
Rohm
Corporation
L
4.1 μH
10 μH
10 μH
Performance
DC resistance Max. Current
0.042 Ω typ.
0.057 Ω max.
1.95 A
0.028 Ω max.
4.5 A
0.048 Ω typ.
0.065 Ω max.
1.70 A
Diameter
5.7 mm
typ.
6.0 mm
max.
12.0 mm
typ.
12.3 mm
max.
6.7 mm
typ.
7.0 mm
max.
Forward current 1.0 A @VF = 0.45 V, Vrm = 25 V
Height
1.8 mm
typ.
2.0 mm
max.
4.5 mm
max.
3.0 mm
max.
Forward current 5.0 A @VF = 0.45 V, Vrm = 25 V
Capacitor
(output
F951C476MG1
Nichicon
Corporation
47 μF, 16 V, 5.5 × 4.8 × 2.3 mm max.,
ESR = 0.08 Ω (nominal value)
capacitance)
(tantalum
electrolytic
capacitor)
F951A476MF1
F920J476MB3
47 μF, 10 V, 5.5 × 4.8 × 2.0 mm max.,
ESR = 0.1 Ω (nominal value)
47 μF, 6.3 V, 3.6 × 3 × 1.2 mm max.,
ESR = 0.27 Ω (nominal value)
F951A107MG1
100 μF, 10 V, 5.5 × 4.8 × 2.3 mm max.,
ESR = 0.08 Ω (nominal value)
External
transistor
(N-channel
FET)
NDS335N^*1
Fairchild
Semiconductor
Corporation
VDSS = 20 V max., VGSS = 8 V max., ID = 1.7 A max.,
Vth = 0.5 V to 1 V, Ciss = 240 pF typ.,
RDS(ON) = 0.14 Ω max.(VGS = 2.7 V), SOT-23-3 package or
equivalent
FDN335N
VDSS = 20 V max., VGSS = 8 V max., ID = 1.7 A max.,
Vth = 0.4 V to 1.5 V, Ciss = 310 pF typ.,
RDS(ON) = 0.10 Ω max.(VGS = 2.5 V), SOT-23-3 package or
equivalent
FTS2001
Sanyo Electric
Co., Ltd.
VDSS = 20 V max., VGSS = 8 V max., ID = 5 A max.,
Vth = 0.4 V to 1.3 V, Ciss = 750 pF typ.,
RDS(ON) = 0.046 Ω max.(VGS = 2.5 V), 8-Pin TSSOP package
*1. The manufacturer recommends the FDN335N as an alternative for the NDS335N.
Caution The value of each characteristic in Table 16 depends on the materials prepared by each manufacturer,
however, confirm the specifications by referring to respective materials when using any of the above.
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