ꢀR1230D001C/D
(Topt=25°C)
Symbol
Item
Conditions
+1.5V, V =0V,
MODE
MIN.
2.4
0.776
TYP. MAX. Unit
V
IN
Operating Input Voltage
Feedback Voltage
5.5
V
V
V
FB
V =V =V
0.800 0.824
IN
CE
SET
I
=10mA
OUT
Feedback Voltage
ppm
∆V
/
-40°C ≤ Topt ≤ 85°C
±150
FB
Temperature Coefficient
/°C
∆T
fosc
fosc
Oscillator Frequency(xx1C)
Oscillator Frequency(xx1D)
Supply Current(xx1C)
Supply Current(xx1D)
Standby Current
V =V =V
+1.5V
+1.5V
425
680
500
800
230
250
0
575 kHz
920 kHz
IN
CE
SET
V =V =V
IN
CE
SET
I
I
V =V =5.5V, V =V
=0V
=0V
300
DD
IN
CE
FB
MODE
µA
V =V =5.5V, V =V
350
DD
IN
CE
FB
MODE
µA
I
stb
V =5.5V, V =V =0V
IN
5
CE
FB
µA
R
ON Resistance of
Pch Transistor
ON Resistance of
V =5.0V
0.20
0.20
0.35
0.60
ONP
IN
Ω
R
V =5.0V
IN
0.45
0.70
ONN
Ω
Nch Transistor
I leak Lx Leakage Current
V =5.5V, V =0V, V =0V/5.5V
-0.1
-0.1
-0.1
1.5
0.0
0.0
0.0
0.1
0.1
0.1
LX
IN
CE
LX
µA
µA
µA
V
V
%
V
I
V
FB
Leakage Current
V =5.5V, V =0V, V =0V/5.5V
VFB
IN
CE
FB
I
CE Input Current
V =5.5V, V
=0V, V =5.5V/0V
CE
IN
MODE
CE
V
V
CE "H" Input Voltage
CE "L" Input Voltage
V =5.5V, V =0V
CEH
IN
FB
V =2.4V, V =0V
0.3
CEL
IN
FB
Maxdty Oscillator Maximum Duty Cycle V
=0V
100
MODE
V
LX
Lx Limit Voltage
V =V =3.0V, V
=0V, V =0V
V -0.15 V -
IN
V -
IN
CE
MODE
FB
IN
0.35
1.5
1.5
2.1
2.2
IN
0.55
2.5
Delay Time by Soft-Start function
Delay Time for protection circuit
UVLO Threshold Voltage
UVLO Released Voltage
MODE Pin Input Current
MODE ”H” Input Voltage
MODE ”L” Input Voltage
T
T
at no load, V =V =V +1.5V
SET
0.5
ms
ms
V
V
µA
V
start
IN
CE
V =V =3.6V, V
=0V
prot
IN
CE
MODE
V
V
I
V =V =2.5V->1.5V, V =0V
1.8
1.9
-0.1
1.5
2.2
2.3
0.1
UVLO1
UVLO2
MODE
IN
CE
FB
V =V =1.5V->2.5V, V =0V
IN
CE
FB
V =5.5V, V
=5.5V/0V, V =0V
MODE CE
IN
V
MODE
V =V =5.5V, V =0V
IN CE FB
V
V =V =2.4V, V =0V
0.3
85
V
%
MODEL
IN
CE
FB
VFMdty VFM Duty Cycle
V =V =V
=2.4V, V =0V
55
65
IN
CE
MODE
FB
Rev. 1.12
- 6 -
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
