RH5RI
•
RH5RI501B
VOUT=5.0V
Symbol
VOUT
VIN
Item
Output Voltage
Input Voltage
Conditions
MIN.
TYP.
MAX.
Unit
V
Note
4.875 5.000 5.125
8
V
→
Vstart
Vhold
Start-up Voltage
Hold-on Voltage
IOUT=1mA,VIN:0 2V
0.8
0.9
V
→
IOUT=1mA,VIN:2 0V
0.7
V
To be measured at VIN
at no load
IIN1
IIN2
Input Current 1
Input Current 2
6
2
12
5
µA
µA
To be measured at VIN
VIN=5.5V
ILX
Lx Switching Current
Lx Leakage Current
VLX=0.4V
80
80
mA
µA
ILXleak
VLX=6V,VIN=5.5V
0.5
Maximum Oscillator
Frequency
fosc
100
120
kHz
Maxdty
Oscillator Duty Cycle
Efficiency
on (VLX “L” ) side
Lx Switch On
65
70
75
80
85
%
%
V
η
VLX
lim
VLX Voltage Limit
0.65
0.8
1.0
Note2
Unless otherwise provided, VIN=3V, Vss=0V, IOUT=10mA, Topt=25˚C, and use External Circuit of Typical
Application (FIG. 1).
(Note) ILX is gradually increased by the external inductor after Lx Switch is turned ON. In accordance with the increase of ILX, VLX is also increased.
When VLX reaches VLXlim, Lx Switch is turned OFF by Lx Switch Protection Circuit. The time period from the time at which VLX reaches VLXlim to
the time at which Lx Switch is turned OFF is about 3µs.
6
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
