S-8521E35MC-BLUT2x datasheet(34/44 Pages) SII | STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

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

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34 / 44 page

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

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