R1221N15AA-TR datasheet(6/21 Pages) RICOH

Part #	R1221N15AA-TR

Description	Step-down DC/DC Converter with Voltage Detector

Download	21 Pages

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Manufacturer	RICOH [RICOH electronics devices division]

Direct Link	http://www.ricoh.com

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6 / 21 page

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Rev. 1.11

- 6 -

n TEST CIRCUITS

Inductor L : 27

mH(Sumida Electronic, CD104)

Diode SD : RB491D (Rohm, Schottky type)

Capacitor CL: 47

mF(Tantalum type)

CIN : 22

mF(Tantalum type)

Power MOS PMOS : HAT1020R(Hitachi)

Resistor R : 100k

W

C)

+

--

+

-

A)

4

3

6

5

V

OSCILLOSCOPE

SD

L

CL

VIN

1

PMOS

CIN

2

+

-

+

-

F)

4

3

6

5

V

OSCILLOSCOPE

SD

L

CL

1

PMOS

VIN

CIN

2

A

3

4

6

5

1

VIN

2

3

4

6

5

1

G)

OSCILLOSCOPE

VIN

VOUT

2

E)

A

3

4

6

5

1

VIN

2

A

3

4

6

5

1

D)

VEXT

VIN

VOUT

2

A

3

4

6

5

1

H)

VIN

VOUT

2

A

I)

VDOUT

3

4

6

5

1

VIN

2

3

4

6

5

1

OSCILLOSCOPE

J)

VIN

VOUT

2

R

+

-

B)

A

3

4

6

5

1

CIN

2

VIN

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R1221N15AA-TR Datasheet(PDF) 6 Page - RICOH electronics devices division

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