Ricoh RH5RH13B Power Supply User Manual


 
7
RH5RH
• RH5RH302B
Symbol Item
VOUT Output Voltage
VIN Input Voltage
Vstart Oscillator Start-up Voltage
IDD
1
Supply Current 1
IDD
2
Supply Current 2
IEXTH EXT “H” Output Current
IEXTL EXT “L” Output Current
fosc Oscillator Frequency
Maxdty
Oscillator Maximum Duty
Cycle
tstart Soft-Start Time
Conditions MIN. TYP. MAX. Unit Note
2.925 3.000 3.075 V
8 V
EXT no load,VOUT :02V 0.7 0.8 V
EXT no load,VOUT=2.88V 30 50 µA
EXT no load,VOUT=3.5V 2 5 µA
VEXT=V
OUT–0.4V –1.5 mA
VEXT=0.4V 1.5 mA
80 100 120 kHz
VEXT “H” side
70 80 90
%
Time required for the rising
0.5
2.0
ms Note1
of V
OUT up to 3V
VOUT=3.0V
Unless otherwise provided, VIN=1.8V, Vss=0V, IOUT=10mA, Topt=25˚C, and use External Circuit of Typical
Application (FIG. 2).
• RH5RH502B
VOUT=5.0V
Unless otherwise provided, VIN=3V, Vss=0V, IOUT=10mA, Topt=25˚C and use External Circuit of Typical
Application (FIG. 2).
(Note 1) refer to page 5 (Note 1)
Symbol Item
VOUT Output Voltage
VIN Input Voltage
Vstart Oscillator Start-up Voltage
IDD
1
Supply Current 1
IDD
2
Supply Current 2
IEXTH EXT “H” Output Current
IEXTL EXT “L” Output Current
fosc Oscillator Frequency
Maxdty
Oscillator Maximum Duty
Cycle
t
start Soft-Start Time
Conditions MIN. TYP. MAX. Unit Note
4.875 5.000 5.125 V
8 V
EXT no load,VOUT :02V 0.7 0.8 V
EXT no load,VOUT=4.8V 60 90 µA
EXT no load,VOUT=5.5V 2 5 µA
VEXT=VOUT–0.4V –2 mA
VEXT=0.4V 2 mA
80 100 120 kHz
VEXT “H” side
70 80 90 %
Time required for the rising
0.5 2.0 ms Note1
of V
OUT up to 5V