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參數(shù)資料
| 型號(hào)： | RN5VS40AA |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | LOW VOLTAGE DETECTOR |
| 中文描述： | 低電壓檢測(cè) |
| 文件頁數(shù)： | 18/30頁 |
| 文件大?。?/td> | 202K |
| 代理商： | RN5VS40AA |
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RN5VS
OPERATION
FIG. 1 Block Diagram
Operation Diagram
Step 1. Output Voltage is equal to Power Source Voltage (V
DD
).
Step 2. When Input Voltage to Comparator reaches the state of Vref
≥
V
DD
·(Rb+Rc)/(Ra+Rb+Rc)at Point A (Detected Voltage –V
DET
), the output of Com-
parator is reserved, so that Output Voltage becomes GND.
Step 3. In the case of CMOS Output, Output Voltage becomes unstable when Supply Voltage (V
DD
) is smaller than Minimum Operating Voltage. In the
case of Nch Open Drain Output, a pulled-up voltage is output.
Step 4. Output Voltage becomes equal to GND.
Step 5. When Input Voltage to Comparator reaches the state of Vref
≤
V
DD
· (Rb)/(Ra+ Rb) at Point B (Released Voltage +V
DET
), the output of Comparator is
reversed, so that Output Voltage becomes equal to Supply Voltage (V
DD
).
FIG. 2 Operation Diagram
Step
Step 1
Step 2
Step 3
Step 4
Step 5
Comparator(+) Pin
Input Voltage
I
II
II
II
I
Comparator Output
H
L
Indefinite
L
H
Tr. 1
OFF
ON
Indefinite
ON
OFF
Output Tr.
Pch
ON
OFF
Indefinite
OFF
ON
OFF
ON
Indefinite
ON
OFF
I
.
Rb + Rc
Ra + Rb + Rc
·V
DD
II
.
Rb
Ra + Rb
·V
DD
GND
OUT
V
DD
Ra
Rb
Rc
Tr.1
V
Pch
Nch
–
+
A
B
Detector Threshold Hysteresis
t
PLH
1
2
3
4
5
In RN5VS
××
A, Nch Tr. drain is
connected to OUT pin.
In RN5VS
××
C, Nch Tr. drain
and Pch Tr. drain are connected
to OUT pin.
Released Volage +V
DET
Detected Volage –V
DET
Supply Volage
(V
DD
)
Minimum Operating Volage
GND
Output Volage
(OUT)
GND
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RN5VS40AA-TL | External Plug-In Power Supply; Series:FWP72; Output Voltage:18V; Output Power Max:72W; Output Current:4A; No. of Outputs:1 RoHS Compliant: Yes |
| RN5VS40AA-TR | LOW VOLTAGE DETECTOR |
| RN5VS40AC | External Plug-In Power Supply; Series:FWP72; Output Voltage:24V; Output Power Max:72W; Output Current:3A; No. of Outputs:1 RoHS Compliant: Yes |
| RN5VS40AC-TL | LOW VOLTAGE DETECTOR |
| RN5VS40AC-TR | External Plug-In Power Supply; Series:FWP72; Output Voltage:-48V; Output Power Max:72W; Output Current:1.5A; No. of Outputs:1 RoHS Compliant: Yes |
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