R1223N Просмотр технического описания (PDF) - RICOH Co.,Ltd.

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R1223N

PWM/VFM step-down DC/DC Converter

RICOH Co.,Ltd. 

n TEST CIRCUITS

A)

PMOS

L

E)

543

VIN

1

2

CIN

B)

V

VIN

SD CL

OSCILLOSCOPE

F)

PMOS

543

A1

2

L

A

543

VIN

1

2

CIN

C)

A

543

VIN

1

2

543

V

CIN

VIN

SD CL

1

2

G)

VIN

OSCILLOSCOPE

OSCILLOSCOPE

543

VOUT

1

2

D)

A

VEXT

543

VIN

1

VOUT

2

The typical characteristics were obtained by use of these test circuits.

Test Circuit A : Typical characteristics 1), 2), 3), 4), 5), 6), 7)

Test Circuit B : Typical characteristics 8)

Test Circuit C : Standby Current

Test Circuit D : Typical characteristics 12), 13)

Test Circuit E : CE input current “H” and “L”

Test Circuit F : Typical characteristics 9)

Test Circuit G : Typical characteristics 10), 11)

12345

Rev. 1.11

-6-

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