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S-8521E35MC-BLUT2x Datasheet(PDF) 34 Page - Seiko Instruments Inc

Part No. S-8521E35MC-BLUT2x
Description  STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
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Manufacturer  SII [Seiko Instruments Inc]
Direct Link  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S-8521E35MC-BLUT2x Datasheet(HTML) 34 Page - Seiko Instruments Inc

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STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8520/8521 Series
Rev.9.0_01
34
Table 12 External parts for Ripple data
Product name
Output voltage
Inductor
Transistor
Rb
Cb
Diode
Output capacitor
S-8520D30MC
3.0 V
CD105 / 47
μH
2SA1213
680
Ω
2200 pF
MA720
47
μF × 2
S-8521D30MC
S-8520B30MC
22
μF × 2
S-8521B30MC
S-8520F33MC
3.3 V
CDH113 / 22
μH
IRF7606
MA737
22
μF
S-8521F33MC
S-8520D50MC
5.0 V
CD105 / 47
μH
2SA1213
680
Ω
2200 pF
MA720
47
μF × 2
S-8521D50MC
S-8520B50MC
22
μF × 2
S-8521B50MC
S-8520F50MC
CDH113 / 22
μH
IRF7606
MA737
22
μF
S-8521F50MC
Table 13 Performance Data
Component
Product name
Manufacturer name
“L” value DC resistance
Maximum
allowable
current
Diameter
Height
Inductor
CD54
Sumida Corporation
47
μH
0.37
Ω
0.72 A
5.8 mm
4.5 mm
CD105
0.17
Ω
1.28 A
10.0 mm
5.4 mm
CDH113
22
μH
0.09
Ω
1.44 A
11.0 mm
3.7 mm
D62F
Toko Ink.
0.25
Ω
0.70 A
6.0 mm
2.7 mm
Diode
MA720
Matsushita Electric
Industrial Co., Ltd.
Forward current 500 mA (at VF = 0.55 V)
MA737
Forward current 1.5 A (at VF = 0.5 V)
Output capacity
F93
Nichicon Corporation
TE
Matsushita Electric
Industrial Co., Ltd.
External transistor
(Bipolar PNP)
2SA1213
Toshiba Corporation
VCEO: 50 V max., IC:
−2 A max., hFE: 120 to 240,
SOT-89-3 package
External transistor
(MOS FET)
TM6201
Toyota Industries
Corporation
VGS: 12 V max., ID:
−2 A max., Vth: -0.7 V min.,
Ciss: 320 pF typ., Ron: 0.25
Ω max. (VGS = −4.5 V),
SOT-89-3 package
IRF7606
International Rectifier
Corporation
VGS: 20 V max., ID:
−2.4 A max., Vth: −1 V min.,
Ciss: 470 pF typ., Ron: 0.15
Ω max. (VGS = −4.5 V),
Micro 8 package


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