R3134N Series
Voltage Detector with Delay Function (Internal Counter Type)
No.EK-209-121001 CMOS Voltage Detector
The R3134N 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. A delay capacitor
is not needed, because the output delay time of 240ms is generated with the counter in the IC.
∗) These products are suitable for automotive applications too. Please refer to our "Car Electronics Products Catalog" or contact us.
FEATURES
• Supply Current (I SS)························Typ. 0.8μA (VDD=VSET+1.0V, R3134N15Ex)
• Operating Voltage Range (VDD)······0.75V to 6.0V
• Detector Threshold Range (VDET)···1.0V to 5.0V ∗ (Internally fixed)
• Output Delay···································Typ.240ms (Accuracy ± 15%)
• Reset Signal···································"L"
• Detector Threshold Accuracy··········± 1.8%
•
Temp. coeff. of Detector Threshold
······Typ. ± 100ppm/°C
• Two Output Types···························Nch. Open Drain Output and
CMOS
• Package··········································SOT-23-5
∗) For detail, please refer to the below SELECTION GUIDES.
BLOCK DIAGRAMS
R3134NxxEA R3134NxxEC
(Nch. open drain output) (CMOS output)
MR
DOUT
VDD
GND
Vref
+
-Delay
Circuit
MR
D
OU
T
V
DD
GND
Vref
+
-Delay
Circuit
SELECTION GUIDE TIMING CHART
Halogen Free
Package
Q'ty per Reel
Part No.
SOT-23-5
3,000 pcs
R3134N
.
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 b e specifi ed.)
.
y
.
:
If the detector threshold includes the 3rd digit, indicate the digit of 0.01V.
(Example) If the detector threshold is 2.63V, R3134N
.
26E∗3
.
-TR-FE
∗
.
:Select the output type from (
.
A
.
) Nch. open drain or (
.
C
.
) CMOS.
GND
tdela
y
GND
GND
tdela
y
Ou tput Volt age
(VOUT)
Manu al Reset
(MR)
Power
Supply
(VDD) VDET
Minimum
Operatin g Vo l tage
Detector
Threshold
The detector threshold is the same as the released voltage, not hysteresis.
PACKAGE (Top View)
SOT-23-5
1 3
5 4
2
1 DOUT
2 VDD
3 GND
4 MR∗
5 NC
∗) 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
RICOHCOMPANY,LTD.
ElectronicDevicesCompany
http://www.ricoh.com/LSI/
For the conservation of the global environment, Ricoh is advancing the decrease of the negative environmental impact material.
After Apr. 1, 2006, we will ship out the lead free products only. Thus, all products that will be shipped from now on comply with RoHS Directive.
Basically after Apr. 1, 2012, we will ship out the Power Management ICs of the Halogen Free products only. (Ricoh Halogen Free products are
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Halogen Free
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