S-8521 datasheet(34/44 Pages) SII

34 / 44 page

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8520/8521 Series

Rev.9.0_01

Table 12 External parts for Ripple data

Product name

Output voltage

Inductor

Transistor

Diode

Output capacitor

S-8520D30MC

3.0 V

CD105 / 47

μH

2SA1213

680

2200 pF

MA720

μF × 2

S-8521D30MC

S-8520B30MC

μF × 2

S-8521B30MC

S-8520F33MC

3.3 V

CDH113 / 22

μH

IRF7606

−

MA737

μF

S-8521F33MC

−

S-8520D50MC

5.0 V

CD105 / 47

μH

2SA1213

680

2200 pF

MA720

μF × 2

S-8521D50MC

S-8520B50MC

μF × 2

S-8521B50MC

S-8520F50MC

CDH113 / 22

μH

IRF7606

−

MA737

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

μH

0.37

0.72 A

5.8 mm

4.5 mm

CD105

0.17

1.28 A

10.0 mm

5.4 mm

CDH113

μH

0.09

1.44 A

11.0 mm

3.7 mm

D62F

Toko Ink.

0.25

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

−

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

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

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