Ricoh RV5VH Manual Do Utilizador

××

××

DC/DC Converter 1

V

OUT1

=5.0V, Topt=25˚C

*

) V

IN

=3.0V, I

OUT

=10mA : unless otherwise specified. (See Typical Application)

*

1 ) This value only shows the supply current of DC/DC1, does not include the supply current of Voltage Detector and external resistors.

V

OUT1

Step-up Output Voltage

I

OUT

=0mA

4.875

5.000

5.125

V

V

IN

max

Maximum Input Voltage

10

V

Vstart

Oscillator Start-up Voltage

No Load

0.7

0.8

V

Vhold

Hold-on Input Voltage

I

OUT

=1mA

0.7

V

I

SS1

Supply Current1 *

1

I

OUT

=0mA, CSW=“L”

40

µA

I

EXT1H

EXT1 “H” Output Current

V

EXT2

=V

OUT1

–0.4V

2

4

mA

I

EXT1L

EXT1 “L” Output Current

V

EXT2

=0.4V

7

14

mA

fosc

Maximum Oscillator Frequency

110

130

150

kHz

Maxdty

Oscillator Duty Cycle

ON (V

LX

=“L”)

55

70

85

%

η

Efficiency

80

%

∆

V

OUT1

Output Voltage Temp. Co.

–40˚C

≤

Topt

≤

85˚C

±100

ppm/˚C

∆

Topt