RN5VS RICOH [RICOH electronics devices division], RN5VS Datasheet - Page 18

• Manufacturer Part Number: RN5VS
• Description: LOW VOLTAGE DETECTOR
• Manufacturer: RICOH [RICOH electronics devices division]

RN5VS
Supply Volage
(V
Output Volage
(OUT)
OPERATION
Operation Diagram
DD
Step 1. Output Voltage is equal to Power Source Voltage (V
Step 2. When Input Voltage to Comparator reaches the state of Vref≥ V
Step 3. In the case of CMOS Output, Output Voltage becomes unstable when Supply Voltage (V
Step 4. Output Voltage becomes equal to GND.
Step 5. When Input Voltage to Comparator reaches the state of Vref ≤V
)
parator is reserved, so that Output Voltage becomes GND.
case of Nch Open Drain Output, a pulled-up voltage is output.
reversed, so that Output Voltage becomes equal to Supply Voltage (V
Released Volage +V
Detected Volage –V
Minimum Operating Volage
GND
GND
FIG. 2 Operation Diagram
Ra
Rb
Rc
+
–
FIG. 1 Block Diagram
DET
Tr.1
DET
1
A
2
Detector Threshold Hysteresis
3
DD
).
4
B
t
PLH
Nch
Pch
5
DD
DD
· (Rb)/(Ra+ Rb) at Point B (Released Voltage +V
DD
·(Rb+Rc)/(Ra+Rb+Rc)at Point A (Detected Voltage –V
V
OUT
GND
).
DD
Output Tr.
Comparator Output
Comparator(+) Pin
Input Voltage
Tr. 1
Step
I
II .
.
Nch
Pch
DD
Ra + Rb + Rc
Ra + Rb
) is smaller than Minimum Operating Voltage. In the
Rb + Rc
Rb
• In RN5VS
• In RN5VS
Step 1 Step 2
OFF
OFF
ON
H
I
connected to OUT pin.
and Pch Tr. drain are connected
to OUT pin.
·V
OFF
ON
ON
DD
L
II
·V
DET
DD
Indefinite
Indefinite
Indefinite
Indefinite
), the output of Comparator is
Step 3
A, Nch Tr. drain is
C, Nch Tr. drain
II
DET
), the output of Com-
Step 4
OFF
ON
ON
II
L
Step 5
OFF
OFF
ON
H
I