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參數(shù)資料
| 型號： | R1221N50AE |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | Step-down DC/DC Converter with Voltage Detector |
| 中文描述： | 降壓直流/直流電壓檢測器 |
| 文件頁數(shù)： | 4/21頁 |
| 文件大小： | 218K |
| 代理商： | R1221N50AE |
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Rev. 1.11 - 4 -
n
ELECTRICAL CHARACTERISTICS
l
R1221N***A(C,E,G) Output Voltage : Vo, Detector Threshold : V
D
(Topt=25
°
C)
Symbol
Item
Conditions
MIN. TYP. MAX.
Note*
Unit
V
IN
Operating Input Voltage
2.3
13.2
V
V
OUT
Step-down Output Voltage
V
IN
=V
CE
=Vo+1.2V, I
OUT
=-10mA
Vo
′
0.98
Vo
Vo
′
1.02
A
V
D
V
OUT
/
D
T
Step-down Output Voltage
Temperature Coefficient
-40
°
C
￡
Topt
￡
85
°
C
±
100
ppm/
°
C
fosc
Oscillator Frequency
V
IN
=V
CE
=Vo+1.2V, I
OUT
=-100mA
240
300
360
A
kHz
D
f
OSC
/
D
T
Frequency Temperature
Coefficient
-40
°
C
￡
Topt
￡
85
°
C
±
0.3
%/
°
C
I
DD1
Supply Current1
V
IN
=13.2V,V
CE
=13.2V,V
OUT
=13.2V
100
160
B
m
A
I
stb
Standby Current
V
IN
=13.2V,V
CE
=0V,V
OUT
=0V
0
0.5
C
m
A
I
EXTH
EXT "H" Output Current
V
IN
=8V,V
EXT
=7.9V,V
OUT
=8V,V
CE
=8V
-10
-6
D
mA
I
EXTL
EXT "L" Output Current
V
IN
=8V,V
EXT
=0.1V,V
OUT
=0V,V
CE
=0V
10
20
D
mA
I
CEH
CE "H" Input Current
V
IN
=13.2V,V
CE
=13.2V,V
OUT
=13.2V
0
0.5
E
m
A
I
CEL
CE "L" Input Current
V
IN
=13.2V,V
CE
=0V,V
OUT
=13.2V
-0.5
0
E
m
A
V
CEH
CE "H" Input Voltage
V
IN
=8V,V
CE
=0V
1.5V
0.8
1.2
F
V
V
CEL
CE "L" Input Voltage
V
IN
=8V,V
CE
=1.5V
0V
0.3
0.8
F
V
Maxdty Oscillator Maximum Duty Cycle
100
%
VFMdty VFM Duty Cycle
Applied to B and F versions only
25
%
T
start
Delay Time by Soft-Start
function
V
IN
=Vo+1.2V,V
CE
=0V
Vo+1.2V
At 80% of rising
5
10
16
F
ms
T
prot
Delay Time for protection circuit V
IN
=Vo+1.2V,V
CE
=Vo+1.2V
0V
1
3
5
G
ms
I
VDLK
VD
OUT
Output Leakage Current V
IN
=V
OUT
=V
CE
=V
DOUT
=8V
0
0.5
I
m
A
I
VDL
VD
OUT
“L” Output Current
V
IN
=V
OUT
=2.3V, V
CE
=0V, V
DOUT
=0.1V
0.5
1
I
mA
-V
DET
Detector Threshold
V
IN
=6V, V
CE
=6V, V
OUT
=V
D
′
1.2V
0V
V
D
′
0.98
V
D
V
D
′
1.02
J
V
tV
DET
Output Delay Time for Released
Voltage
V
IN
=6V, V
CE
=6V, V
OUT
=0V
V
D
′
1.2V
At 80% of rising
2
5
10
J
ms
V
HYS
Detector Threshold Hysteresis
V
IN
=6V, V
CE
=6V, V
OUT
=0V
V
D
′
1.2V
V
D
′
0.01
V
D
′
0.03
V
D
′
0.05
J
mV
D
-
V
DET
/
D
T
Detector Threshold
Temperature Coefficient
Note: Refer to Test Circuits
-40
°
C
￡
Topt
￡
85
°
C
±
100
ppm/
°
C
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| R1221N50AF | Step-down DC/DC Converter with Voltage Detector |
| R1221N50AF-TR | Step-down DC/DC Converter with Voltage Detector |
| R1221N50AG | Step-down DC/DC Converter with Voltage Detector |
| R1221N50AG-TR | Step-down DC/DC Converter with Voltage Detector |
| R1221N | Step-down DC/DC Converter with Voltage Detector |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R1221N50AE-TR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Step-down DC/DC Converter with Voltage Detector |
| R1221N50AF | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Step-down DC/DC Converter with Voltage Detector |
| R1221N50AF-TR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Step-down DC/DC Converter with Voltage Detector |
| R1221N50AG | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Step-down DC/DC Converter with Voltage Detector |
| R1221N50AG-TR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Step-down DC/DC Converter with Voltage Detector |
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