RN5VD Series
Low Input VD with Delay Function
No.EK-029-091101 CMOS Voltage Detector
The RN5VD Series are CMOS-based voltage detector ICs with the built-in output delay circuit, which can operate at low voltage.
The delay time can be set with an external capacitor.
FEATURES
• Supply Current (ISS1)·······················Typ. 1μA (VDD=-VDET+2V, RN5VD15x)
• Operating Voltage Range (VDD)······0.7V to 10.0V (Topt=25°C)
•
Detector Threshold Range (-V
DET
)
·····0.9V to 6.0V
(
internally fixed
)
• Output Delay ·································Typ. 100ms delay set with a 0.15μF external
capacitor
• Reset Signal···································"L"
• Detector Threshold Accuracy ······· ± 2.5%
•
Temp. coeff. of Detector Threshold
··· Typ. ± 100ppm/°C
• Two Output Types·························· Nch. Open Drain and CMOS
• Package········································· SOT-23-5
BLOCK DIAGRAMS
RN5VDxxA RN5VDxxC
(Nch. open drain output) (CMOS output)
OUT
VDD
Vref
CD
GND
RD
OUT
VDD
Vref
CD
GND
RD
SELECTION GUIDE TIMING CHART
Package Quantity per Reel Part No.
SOT-23-5 3,000 pcs
RN5VD
.
xx∗
A-TR-F
.
xx
.
:
Specify the detect or threshold within the range 0.9V (
.
09
.
) to 6.0V (
.
60
.
)
in 0.1V steps.
.
∗
: Select the output type from (
.
A
.
) Nch. open drain or (
.
C
.
) CMOS.
tD
GND
GND
VDDL
-
VDET
+VDET
RN5VDxxA tD
RN5VDxxC
tPHL tPHL
Hysteresis
Detector Th
r
eshold
Release Voltage
Minimum Operati ng
Voltage
Pull-up Voltage
Supply
Voltage
(VDD)
Output
Voltage
(VOUT)
Hysteresis
PACKAGE (Top View) HOW TO DETERMINE DELAY TIME
SOT-23-5
1 3
5 4
2
1 OUT
2 VDD
3 GND
4 NC
5 CD
Letting the capacity of an external capacitor CD (F),
the delay time (tD) is found from the following equation:
t
D=0.69 × 106 × CD (s)
APPLICATIONS
• Microcontroller and logic circuit reset
• Battery checker
• Window comparator
• Wave shaping circuit
• Battery back-up circuit
• Power failure detector
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