Ricoh RV5VH Manual Do Utilizador

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DC/DC Converter 2

V

SET2

Output Voltage Setting 1

*

1

0

V

V

FB2

Feed Back Volatage 1

–20

0

20

mV

V

IN

max

Maximum Input Voltage

10

V

V

OPT

min

Minimum Operating Voltage

Specified as the V

DD

1.8

V

Voltage for Device Operation

I

SS21

Supply Current21*

2

CSW=“H”, FB2=0.1V

15

60

µA

I

SS22

Supply Current22*

2

CSW=“H”, FB2=–0.1V

4

µA

I

EXT2H

EXT2 “H” Output Current

V

EXT2

=V

DD

–0.4V

2

4

mA

I

EXT2L

EXT2 “L” Output Current

V

EXT2

=0.4V

4

8

mA

fosc

Maximum Oscillator Frequency

110

130

150

kHz

Maxdty

Oscillator Duty Cycle

ON (V

EXT2

=“L”)

40

50

60

%

∆

V

FB2

Feed Back Voltage Temp.Co.

–40˚C

≤

Topt

≤

85˚C

±30

µV/˚C

∆

Topt

*

) V

DD

=3.0V : unless otherwise specified. (See Typical Application)

*

1 ) Adjustable by external resistors (to -30V).

*

2 ) This value shows only the supply current of DC/DC2, not include the supply current of external resistors.

V

DD

=3.0V, Topt=25˚C