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參數(shù)資料
| 型號(hào)： | R1282D002A |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | 2CH PWM DC/DC CONTROLLER |
| 中文描述： | 2聲道的PWM DC / DC控制器 |
| 文件頁(yè)數(shù)： | 4/18頁(yè) |
| 文件大?。?/td> | 327K |
| 代理商： | R1282D002A |
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R1282D002A
ELECTRICAL CHARACTERISTICS
4
Topt
=
25
°
C
Unit
V
V
mA
mV
mV
mA
Symbol
V
IN
V
REFOUT
I
ROUT
V
REFOUT
/
V
IN
V
REFOUT
Line Regulation
V
REFOUT
/
I
OUT
V
REFOUT
Load Regulation
I
LIM
V
REFOUT
Short Current Limit V
IN
=
3.3V, V
REFOUT
=
0V
V
REFOUT
Voltage
Temperature Coefficient
V
FB1
V
FB1
Voltage
V
FB1
Voltage
Temperature Coefficient
V
FB2
Voltage
Temperature Coefficient
I
VFB1
,
2
V
FB1
,
2
Input Current
Item
Conditions
Min.
2.5
1.478
20
Typ.
1.500
2
6
25
Max.
5.5
1.522
Operating Input Voltage
V
REFOUT
Voltage Tolerance
V
REFOUT
Output Current
V
IN
=
3.3V, I
OUT
=
1mA
V
IN
=
3.3V
2.5V
<
=
V
IN
<
1mA
<
=
I
ROUT
<
=
5.5V
=
10mA V
IN
=
3.3V
6
12
V
REFOUT
/
T
40
°
C
<
=
Topt
<
=
85
°
C
±150
ppm/°C
V
IN
=
3.3V
0.985
1.000
1.015
V
V
FB1
/
T
40
°
C
<
=
Topt
<
=
85
°
C
±150
ppm/°C
V
FB2
/
T
40
°
C
<
=
Topt
<
=
85
°
C
±150
ppm/°C
V
IN
=
5.5V,V
FB1
or V
FB2
=
0V or 5.5V
EXT1,2 Pins at no load,
V
IN
=
3.3V
V
IN
=
5.5V, EXT1,2 pins at no load
V
IN
=
3.3V, I
EXT
=
20mA
V
IN
=
3.3V, I
EXT
=
20mA
V
IN
=
3.3V, I
EXT
=
20mA
V
IN
=
3.3V, I
EXT
=
20mA
V
IN
=
3.3V, V
FB1
=
1.1V
→
0V
0.1
0.1
μ
A
f
OSC
Oscillator Frequency
595
700
805
kHz
I
DD1
R
EXTH1
R
EXTL1
R
EXTH2
R
EXTL2
T
DLY
V
UVLOD
Supply Current
EXT1 "H" ON Resistance
EXT1 "L" ON Resistance
EXT2 "H" ON Resistance
EXT2 "L" ON Resistance
Delay Time for Protection
UVLO Detector Threshold
1.4
4.0
2.7
4.0
3.7
100
2.20
V
UVLOD
+
0.20
0.2
1.2
0.2
1.2
110
3.0
8.0
5.0
8.0
8.0
140
2.35
mA
ms
V
60
2.10
V
UVLO
UVLO Released Voltage
2.48
V
V
DTC10
V
DTC1100
V
DTC20
V
DTC2100
A
V1
CH1 Duty
=
0%
CH1 Duty
=
100%
CH2 Duty
=
0%
CH2 Duty
=
100%
CH1 Open Loop Gain
CH1 Single Gain
Frequency Band
V
IN
=
3.3V
V
IN
=
3.3V
V
IN
=
3.3V
V
IN
=
3.3V
V
IN
=
3.3V
0.1
1.1
0.1
1.1
0.3
1.3
0.3
1.3
V
V
V
V
dB
F
T1
V
IN
=
3.3V, A
V1
=
0dB
1.9
MHz
V
ICR1
CH1 Input Voltage Range
V
IN
=
3.3V
0.7 to
V
IN
V
I
AMPL
CH1 Sink Current
V
IN
=
3.3V,
V
AMPOUT1
=
1.0V,V
FB1
=
V
FB1
+
0.1V
V
IN
=
3.3V,
V
AMPOUT1
=
1.0V,V
FB1
=
V
FB1
0.1V
V
IN
=
3.3V
70
115
μ
A
I
AMPH
CH1 Source Current
1.4
0.7
mA
A
V2
CH2 Open Loop Gain
CH2 Single Gain
Frequency Band
60
dB
F
T2
V
IN
=
3.3V, A
V2
=
0dB
600
kHz
V
ICR2
CH2 Input Voltage Range
V
IN
=
3.3V
0.2 to
V
IN
1.3
1.000
V
V
FB2
CH2 Reference Voltage
V
IN
=
3.3V
0.985
1.015
V
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| R1282D002A-TR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:2CH PWM DC/DC CONTROLLER |
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