RH5RI
• RH5RI303B
Symbol
VOUT=3.0V
Item
Output Voltage
Input Voltage
Start-up Voltage
Hold-on Voltage
Efficiency
Conditions
MIN.
TYP.
MAX.
Unit
V
Note
VOUT
VIN
2.925 3.000 3.075
8
V
Vstart
Vhold
η
IOUT=1mA,VIN:0→2V
IOUT=1mA,VIN:2→0V
0.8
0.9
V
0.7
70
V
80
4
%
To be measured at VIN
at no load
IIN1
IIN2
Input Current 1
Input Current 2
8
5
µA
To be measured at VIN
VIN=3.5V
µ
A
2
ILX
Lx Switching Current
Lx Leakage Current
EXT “H” Output Current
EXT “L” Output Current
CE “H” Level 1
VLX=0.4V
VLX=6V,VIN=3.5V
VEXT=VOUT–0.4V
VEXT=0.4V
60
mA
µA
mA
mA
V
ILXleak
IEXTH
IEXTL
VCEH1
VCEL1
VCEH2
VCEL2
ICEH
0.5
–1.5
1.5
VOUT≥1.5V
VOUT–0.4
CE “L” Level 1
VOUT≥1.5V
0.4
V
CE “H” Level 2
0.8V≤VOUT<1.5V
0.8V≤VOUT<1.5V
CE=3V
V
OUT–0.1
V
CE “L” Level 2
0.1
0.5
V
CE “H” Input Current
CE “L” Input Current
µA
µA
ICEL
CE=0V
–0.5
80
Maximum Oscillator
Frequency
fosc
100
120
kHz
Maxdty
VLXlim
Oscillator Duty Cycle
VLX Voltage Limit
on (VLX “L” )side
Lx Switch on
65
75
85
%
V
0.65
0.8
1.0
Note
Unless otherwise provided, VIN=1.8V, VSS=0V, IOUT=10mA, Topt=25˚C, and use External Circuit of Typical
Application (FIG. 3).
(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.
8
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
