R1211D002A RICOH electronics devices division, R1211D002A Datasheet - Page 8

• Manufacturer Part Number: R1211D002A
• Description: Step-up DC/DC Controller
• Manufacturer: RICOH electronics devices division

Symbol
V
V
maxdty
T
Rev. 1.10
R
R
V
I
I
V
V
f
START
UVLO1
UVLO2
I
I
I
I
V
f
DLY1
DLY2
R1211X002D
V
OSC
V
EXTH
CEH
I
DD1
EXTL
STB
CEL
OSC
CEH
CEL
FB
DLY
FB
IN
FB
T
T
/
/
Operating Input Voltage
V
V
Temperature Coefficient
V
Oscillator Frequency
Oscillator Frequency
Temperature Coefficient
Supply Current 1
Maximum Duty Cycle
EXT “H” ON Resistance
EXT “L” ON Resistance
Delay Pin Charge Current V
Delay Pin Discharge Current
Delay Pin Detector Threshold
Soft-start Time
UVLO Detector Threshold V
UVLO Detector Hysteresis V
Standby Current
CE “H” Input Current
CE “L” Input Current
CE “H” Input Voltage
CE “L” Input Voltage
FB
FB
FB
Voltage Tolerance
Voltage
Input Current
Item
V
-40 C Topt
V
V
-40 C Topt
V
V
V
V
V
V
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
=3.3V
=6V, V
=3.3V, V
=6V, V
=3.3V, EXT “H” side
=3.3V, I
=3.3V, I
=3.3V, V
=V
=3.3V, V
=3.3V
=3.3V 0V, V
=0V 3.3V, V
=6V, V
=6V, V
=6V, V
=6V, V
=2.5V, V
FB
=2.5V, V
FB
DLY
CE
CE
CE
CE
EXT
EXT
DLY
DLY
FB
CE
=0V or 6V
=0V
=6V
=0V
=0V 6V
=V
=0V, V
=2V 0V
85 C
85 C
=-20mA
=20mA
Conditions
=V
=V
FB
- 8 -
DLY
DLY
DLY
FB
FB
=0V, EXT at no load
=V
=V
=0V
=0V
=0.1V
DLY
FB
FB
=0V 2V
=0V
=0V
0.985
MIN.
0.95
0.08
-0.1
240
-0.5
-0.5
2.5
2.5
5.0
2.1
1.5
2.0
82
1.000
TYP.
1.00
10.5
0.13
300
300
4.5
5.5
2.2
150
90
0.6
5
3
0
1.015
MAX.
1.05
16.0
0.18
360
500
6.0
0.1
7.0
9.0
2.3
0.5
0.5
0.3
94
10
6
1
ppm/ C
kHz/ C
Unit
kHz
mA
ms
%
V
V
V
V
V
V
V
A
A
A
A
A
A