R1211D002B RICOH [RICOH electronics devices division], R1211D002B Datasheet - Page 4

• Manufacturer Part Number: R1211D002B
• Description: STEP-UP DC/DC CONTROLLER
• Manufacturer: RICOH [RICOH electronics devices division]

4
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ELECTRICAL CHARACTERISTICS
R1211x
∆f
Symbol
∆V
R1211x002A
maxdty
T
V
V
R
R
OS
I
I
I
I
V
f
V
I
START
UVLO1
UVLO2
AMP1
AMP2
V
DLY1
DLY2
I
OS
FB
DD1
EXTH
EXTL
FB
DLY
c/∆T
FB
IN
/∆T
c
Oscillator Frequency
Operating Input Voltage
V
V
Temperature Coefficient
V
Oscillator Frequency
Temperature Coefficient
Supply Current 1
Maximum Duty Cycle
EXT "H" ON Resistance
EXT "L" ON Resistance
Delay Pin Charge Current
Delay Pin Discharge Current
Delay Pin Detector Threshold
Soft-start Time
UVLO Detector Threshold
UVLO Detector Hysteresis
AMP "H" Output Current
AMP "L" Output Current
FB
FB
FB
Voltage Tolerance
Voltage
Input Current
Item
V
−40°C
V
V
−40°C
V
EXT at no load
V
EXT "H" side
V
V
V
V
V
V
V
V
rising edge
V
V
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
IN
IN
IN
DLY
IN
FB
IN
IN
DLY
IN
DLY
IN
FB
IN
FB
=3.3V
=6V, V
=3.3V, V
=6V, V
=3.3V,
=3.3V, I
=3.3V, I
=3.3V, V
=V
=3.3V,
=3.3V at 90% of
=3.3V→0V,
=0V→3.3V,
=3.3V, V
=3.3V, V
=0V,V
=0.9V
=1.1V
=0.1V
=V
=V
FB
FB
FB
< =
< =
=2.5V,
Conditions
=0V
=0V
Topt
Topt
DLY
FB
DLY
EXT
EXT
=0V or 6V
DLY
DLY
AMP
AMP
=0V→2V
=V
=−20mA
=20mA
=V
=V
=1V,
=1V,
< =
< =
FB
85°C
85°C
=0V,
FB
FB
=0V
=0V
0.985
Min.
−0.1
0.95
0.08
0.45
595
2.5
2.5
2.5
4.5
2.1
82
30
1.000
±150
Typ.
±1.4
1.00
0.13
0.90
700
600
5.0
5.5
9.0
2.2
90
60
5
3
Max.
1.015
1.05
13.5
0.18
1.50
805
900
6.0
0.1
7.5
9.0
2.3
94
10
90
6
Topt=25°C
ppm/°C
kHz/°C
Unit
kHz
mA
mA
ms
µA
µA
µA
µA
%
Ω
Ω
V
V
V
V
V