Ricoh R3132x/R3133D - Manual
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R3132x/R3133D Series
Voltage Detector with Delay Function (Internal Counter Type)
No.EK-093-140930
CMOS Voltage Detector
The R3132x/R3133D Series are CMOS-based voltage detector ICs with the built-in output delay circuit. There is no hysteresis between
the detector threshold and the released voltage. By inputting "L" signal to MR pin, the manual reset signal is outputted. Reset signal
can be chosen from "L" (R3132x) or "H" (R3133D). A delay capacitor is not needed, because the output delay time of 240ms is
generated with the counter in the IC.
FEATURES
•
Supply Current (I
SS
) ···················· Typ. 0.8
μ
A (V
DD
=V
DET
+1.0V, R313xx15Ex)
Operating Voltage Range (V
DD
)
0.75V to 6.0V (R3132x, Absolute maximum rating: 6.5V),
0.8V to 6.0V (R3133D, Absolute maximum rating: 6.5V)
•
Detector Threshold Range (V
DET
) ·· 1.0V to 5.0V
∗
(Internally fixed)
•
Output Delay ···························· Typ. 240ms (Accuracy
±
15%)
•
Reset Signal ····························· R3132x : "L", R3133D : "H"
•
Detector Threshold Accuracy ········
±
2%
•
Temp. coeff. of Detector Threshold ·· Typ.
±
100ppm/
°
C
•
Two Output Types ······················ Nch. Open Drain and CMOS
•
Packages ································· SON1612-6,
SC-82AB (only R3132Q)
∗
) For detail, please refer to the below SELECTION GUIDES.
BLOCK DIAGRAMS
R3132xxxEA R3132xxxEC
R3133DxxEA R3133DxxEC
(Nch. open drain output)
(CMOS output)
MR
OUT
V
DD
GND
Vref
+
-
Delay
Circuit
MR
OUT
V
DD
GND
Vref
+
-
Delay
Circuit
SELECTION GUIDES
TIMING CHARTS
Halogen Free Package Q'ty per Reel Part
No.
SON1612-6 4,000
pcs
R3132D
.
xx
.
E
.
∗
(
.
y
)-TR-FE
R3133D
.
xx
.
E
.
∗
(
.
y
)-TR-FE
SC-82AB 3,000
pcs
R3132Q
.
xx
.
E
.
∗
(
.
y
)-TR-FE
.
xx
.
: Specify the detector threshold within the range of
1.0V
(
.
10
.
) to 5.0V (
.
50
.
) in 0.1V steps.
(2.32V, 2.63V, 2.93V, 3.08V, 4.38V and 4.63V can also be specified.)
.
y
.
: If the detector threshold includes the 3rd digit, indicate the digit of 0.01V.
(Example) If the detector threshold is 2.63V, R313xx
.
26
.
E
∗
.
3
.
-TR-FE
.
∗
: Select the output type from (
.
A
.
) Nch. open drain or (
.
C
.
) CMOS.
PACKAGES (Top View)
SON1612-6 SC-82AB
1 2 3
6 5 4
1 2
4 3
1 V
DD
2 GND
3
MR
∗
4 OUT
5 GND
6 NC
1 GND
2 OUT
3
MR
∗
4 V
DD
∗
) Manual reset input pin ("L" active)
APPLICATIONS
•
Microcontroller and logic circuit reset
•
Wave shaping circuit
•
Battery checker
•
Battery back-up circuit
•
Window comparator
•
Power failure detector
Detector Threshold
Minimum Operating
Voltage
V
DET
V
DDL
V
DDL
GND
GND
GND
Supply Voltage
(V
DD
)
Output Voltage
(V
OUT
)
Manual Reset
(MR)
Minimum Operating
Voltage
tdelay
tdelay
tdelay
tdelay
Detector Threshold
Minimum Operating
Voltage
V
DET
V
DDL
V
DDL
GND
GND
GND
Supply Voltage
(V
DD
)
Output Voltage
(V
OUT
)
Manual Reset
(MR)
Minimum Operating
Voltage
R3132x
R3133D
The detector threshold is the same as the released voltage, not hysteresis.
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