參數(shù)資料
型號： R1212D101A
廠商： Ricoh Co., Ltd.
英文描述： STEP-UP DC/DC CONTOLLER
中文描述： 升壓型DC /直流位指示
文件頁數(shù)： 5/41頁
文件大?。?/td> 690K
代理商： R1212D101A
R1212D
R1212D100B
5
Topt
=
25
°
C
Symbol
V
IN
V
FB
V
FB
/
V
IN
V
FB
Voltage Line Regulation
V
FB
/
Topt
Coefficient
I
FB
V
FB
Input Current
A
V
Open Loop Voltage Gain
f
T
Unity Gain Frequency Band
fosc
Oscillator Frequency
fosc/
V
IN
Regulation
fosc/
Topt
Temperature Coefficient
I
DD1
Supply Current 1
V
REFOUT
V
REFOUT
Voltage
V
REFOUT
Maximum Output
Current
V
REFOUT
/
V
IN
V
REFOUT
/
I
ROUT
Ilim
V
REFOUT
Short Current Limit
V
REFOUT
/
Topt
Coefficient
R
EXTH
EXT "H" ON Resistance
R
EXTL
EXT "L" ON Resistance
tr
EXT Rising Time
tf
EXT Falling Time
I
DLY1
DELAY Pin Charge Current
I
DLY2
DELAY Pin Discharge Current V
IN
=
V
FB
=
2.2V, V
DLY
=
0.1V
DELAY Pin Detector
Threshold
V
UVLO1
UVLO Detector Threshold
Item
Conditions
Min.
2.2
0.985 1.000 1.015
3
Typ.
Max.
5.5
Unit
V
V
mV
ppm/
°C
Operating Input Voltage
V
FB
Voltage Tolerance
V
IN
=
3.3V
V
IN
: from 2.2V to 5.5V
V
FB
Voltage Temperature
40
°
C
<
=
Topt
<
=
85
°
C
±
150
V
IN
=
5.5V, V
FB
=
0V or 5.5V
V
IN
=
3.3V
V
IN
=
3.3V, A
V
=
0
V
IN
=
3.3V, V
DLY
=
V
FB
=
0V
0.1
1.19
0.1
1.61
μ
A
dB
100
1.0
1.40
MHz
MHz
Oscillator Frequency Line
V
IN
: from 2.2V to 5.5V
100
KHz
Oscillator Frequency
40
°
C
<
=
Topt
<
=
85
°
C
±
2.0
KHz
/
°
C
V
IN
=
5.5V, V
DLY
=
V
FB
=
0V EXT at no load
V
IN
=
3.3V, I
ROUT
=
1mA
900
1800
μ
A
V
1.478 1.500 1.522
I
OUT
V
IN
=
3.3V
10
mA
V
REFOUT
Line Regulation
V
IN
: from 2.2V to 5.5V
5
10
mV
V
REFOUT
Load Regulation
V
IN
=
3.3V, I
ROUT
: from 0.1mA to 5.0mA
6
15
mV
V
IN
=
3.3V, V
REFOUT
=
0V
20
mA
ppm/
°C
V
REFOUT
Voltage Temperature
40
°
C
<
=
Topt
<
=
85
°
C
±
150
V
IN
=
3.3V, I
EXT
=
50mA
V
IN
=
3.3V, I
EXT
=
50mA
V
IN
=
3.3V, C
L
=
1000pF
V
IN
=
3.3V, C
L
=
1000pF
V
IN
=
3.3V, V
DLY
=
V
FB
=
0V
2.5
1.5
12
8
5.5
0.20
6.0
4.0
8.0
0.36
ns
ns
3.0
0.08
μ
A
mA
V
DLY
V
FB
=
0V, V
DLY
=
0V to 2V
0.95
1.00
1.05
V
V
IN
=
3.3V to 0V, V
DLY
=
V
FB
=
0V
1.8
1.9
V
UVLO1
+
0.2
0.18
0.3
0.75
0.87
1.0
100
2.0
V
V
UVLO2
UVLO Released Voltage
V
IN
=
0V to 3.3V, V
DLY
=
V
FB
=
0V
2.2
V
V
DTC0
V
DTC20
V
DTC80
V
DTC100
I
AMPH
I
AMPL
Duty
=
0% DTC Pin Voltage
Duty
=
20% DTC Pin Voltage
Duty
=
80% DTC Pin Voltage
Duty
=
100% DTC Pin Voltage
AMP "H" Output Current
AMP "L" Output Current
V
IN
=
3.3V
V
IN
=
3.3V
V
IN
=
3.3V
V
IN
=
3.3V
V
IN
=
3.3V, V
AMP
=
1.0V, V
FB
=
0.9V
V
IN
=
3.3V, V
AMP
=
1.0V, V
FB
=
1.1V
0.05
0.80
0.5
60
0.25
1.00
1.8
160
V
V
V
V
mA
μ
A
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