R1212D002A RICOH [RICOH electronics devices division], R1212D002A Datasheet - Page 9

• Manufacturer Part Number: R1212D002A
• Description: STEP-UP DC/DC CONTOLLER
• Manufacturer: RICOH [RICOH electronics devices division]

•
∆fosc/∆V
∆V
∆V
∆V
∆V
Maxduty
Symbol
V
R1212D102C
∆fosc/
∆Topt
∆Topt
∆I
∆Topt
V
V
V
V
∆V
R
R
V
I
∆V
I
fosc
REFOUT
I
I
V
FB
I
Ilim
V
I
REFOUT
REFOUT
REFOUT
AMPH
UVLO1
UVLO2
AMPL
V
DLY1
DLY2
DTC20
DTC80
A
I
OUT
DD1
EXTH
DTC0
ROUT
EXTL
f
tr
FB
tf
DLY
FB
/∆V
T
IN
FB
V
IN
/
IN
IN
/
/
/
Operating Input Voltage
V
V
V
Coefficient
V
Open Loop Voltage Gain
Unity Gain Frequency Band
Oscillator Frequency
Oscillator Frequency Line
Regulation
Oscillator Frequency
Temperature Coefficient
Supply Current 1
V
V
Current
V
V
V
V
Coefficient
EXT "H" ON Resistance
EXT "L" ON Resistance
EXT Rising Time
EXT Falling Time
DELAY Pin Charge Current
DELAY Pin Discharge Current V
DELAY Pin Detector Threshold V
UVLO Detector Threshold
UVLO Released Voltage
Duty=0% DTC Pin Voltage
Duty=20% DTC Pin Voltage
Duty=80% DTC Pin Voltage
Maximum Duty Cycle
AMP "H" Output Current
AMP "L" Output Current
FB
FB
FB
FB
REFOUT
REFOUT
REFOUT
REFOUT
REFOUT
REFOUT
Voltage Tolerance
Voltage Line Regulation
Voltage Temperature
Input Current
Voltage
Maximum Output
Line Regulation
Load Regulation
Short Current Limit
Voltage Temperature
Item
V
V
−
V
V
V
V
V
−
V
V
V
V
V
V
−
V
V
V
V
V
V
V
V
V
V
V
V
V
40°C
40°C
40°C
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
=5.5V, V
=3.3V, I
=3.3V
: from 2.2V to 5.5V
=5.5V, V
=3.3V
=3.3V, A
=3.3V, V
: from 2.2V to 5.5V
=3.3V, I
=3.3V
: from 2.2V to 5.5V
=3.3V, V
=3.3V, I
=3.3V, I
=3.3V, C
=3.3V, C
=3.3V, V
=V
=3.3V, V
=3.3V to 0V, V
=0V to 3.3V, V
=3.3V
=3.3V
=3.3V
=3.3V
=3.3V, V
=3.3V, V
FB
< =
< =
=2.2V, V
< =
Topt
Topt
Topt
ROUT
DLY
ROUT
EXT
EXT
FB
V
DLY
REFOUT
DLY
FB
AMP
AMP
L
L
Conditions
=0
=1000pF
=1000pF
=0V or 5.5V
=V
=−50mA
=50mA
=0V, V
=V
: from 0.1mA to 5.0mA
=V
< =
< =
=1mA
=1.0V, V
=1.0V, V
< =
FB
DLY
85°C
85°C
FB
FB
=0V
DLY
DLY
85°C
=0V EXT at no load
=0V
=0V
=0.1V
DLY
=V
=V
=0V to 2V
FB
FB
FB
FB
=0V
=0V
=0.9V
=1.1V
0.985 1.000 1.015
1.478 1.500 1.522
Min.
−0.1
0.08
0.95
0.05
85.5
240
3.3
2.0
2.6
0.5
10
50
+ 0.25
V
±
±
Typ.
0.20
1.00
0.18
0.75
91.5
±
100
300
400
1.0
2.5
1.5
4.5
2.8
UVLO1
0.3
1.0
150
150
25
20
12
90
0.5
3
5
6
8
Max.
0.36
1.05
3.30
0.25
97.5
360
800
150
5.5
0.1
6.0
4.0
7.0
3.0
1.8
10
15
Topt
R1212D
=
ppm/
KHz/
ppm/
MHz
Unit
KHz
KHz
25°C
mV
mA
mV
mV
mA
mA
mA
°C
µ
°C
µ
°C
µ
µ
dB
%
Ω
Ω
ns
ns
V
V
V
V
V
V
V
V
V
A
A
A
A
9