n
ELECTRICAL CHARACTERISTICS
lR1223N**2A(,C,E,G)
Output Voltage : Vo
Symbol
V
IN
V
OUT
Item
Operating Input Voltage
Step-down Output Voltage
V
IN
=V
CE
=Vo+1.2V,I
OUT
=-10mA
Conditions
MIN.
2.3
Vo´
0.98
DV
OUT
/
DT
fosc
Df
OSC
/
DT
I
DD1
I
stb
I
EXTH
I
EXTL
I
CEH
I
CEL
V
CEH
V
CEL
Maxdty
VFMdty
T
start
Step-down Output Voltage
Temperature Coefficient
Oscillator Frequency
Oscillator Frequency
Temperature Coefficient
Supply Current1
Standby Current
EXT "H" Output Current
EXT "L" Output Current
CE "H" Input Current
CE "L" Input Current
CE "H" Input Voltage
CE "L" Input Voltage
Oscillator Maximum Duty Cycle
VFM Duty Cycle
Delay Time by Soft-Start function
(Topt=25°C)
TYP.
MAX. Unit
13.2
Vo
Vo´
1.02
±100
ppm
/°C
V
V
-40°C
£
Topt
£
85°C
V
IN
=V
CE
=Vo+1.2V,I
OUT
=-100mA
-40°C
£
Topt
£
85°C
240
300
±0.3
360
kHz
%
/°C
V
IN
=13.2V,V
CE
=13.2V,V
OUT
=13.2V
V
IN
=13.2V,V
CE
=0V,V
OUT
=0V
V
IN
=8V,V
EXT
=7.9V,V
OUT
=8V,V
CE
=8V
V
IN
=8V,V
EXT
=0.1V,V
OUT
=0V,V
CE
=8V
V
IN
=13.2V,V
CE
=13.2V,V
OUT
=13.2V
V
IN
=13.2V,V
CE
=0V,V
OUT
=13.2V
V
IN
=8V,V
OUT
=0V®1.5V
V
IN
=8V,V
OUT
=1.5V®0V
0.3
100
only for A, E version
V
IN
= Vo+1.2V, V
CE
=0V®Vo+1.2V
specified at 80% for rising edge
5
-0.5
10
100
0
-10
20
0
0
0.8
0.8
160
0.5
-6
mA
mA
mA
mA
0.5
mA
mA
1.2
V
V
%
25
10
16
%
ms
T
prot
Delay Time for protection circuit
V
IN
=V
CE
=Vo+1.2V
V
OUT
= Vo+1.2V®0V
1
3
5
ms
12345
Rev. 1.11
-4-
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
