R3117x Series
Voltage Detector with SENSE pin
The R3117x Series are CMOS-based voltage detector ICs. Since R3117x has a SENSE pin for monitoring voltage separately from the
power pin, its reset signal does not become unstable as long as power supply is secured and the "L" can be maintained. In addition
to SOT-23-5 and SC-88A packages, a 1mm square DFN(PLP)1010-4 package is also available.
∗) R3117N Series are suitable for automotive applications too. Please refer to our "Car Electronics Products Catalog" or contact us.
• If the SENSE pin voltage of R3117xxx1A/C and R3117Qxx2A/C make the gradual curve by raising 0.5V/ms or less, it may cause noise when the output voltage is switched
from low to high. Please use R3117xxx3A/C and R3117Qxx4A/C Series for new designs instead of these products to avoid the above problem.
•
R3117xxx3A/C and R3117Qxx4A/C Series may cause the malfunction (miss detection), in the case of its VDD pin voltage changes very rapidly. Please check the details in
the datasheet.
FEATURES
• Supply Current (ISS) ························Typ. 0.29μA (VSENSE=-VSET × 1.1)
•
····· Typ. ± 30ppm/°C
• Operating Voltage Range (VDD) ······1.0V to 6.0V
• OTeumtppu. ctoTeyfpf.eof··D··e··t·e··c··to··r··T··h··r·e··s·h··o··l·d······· Nch. Open Drain and CMOS
• Packages ······································· DFN(PLP)1010-4, SC-88A,
SOT-23-5
•
(-VDET) ······0.7V to 5.0V (Internally fixed)
• RDeetseecttoSriTghnraels·h··o·l·d···R··a··n··g··e···················"L"
• Detector Threshold Accuracy ·········± 1% (-VSET ≥ 1.6V)
(The above shows specification at Topt=25 C. Design assurance value at -40 C ≤ Topt ≤ 85 C is also available. For details, please refer to the datasheet.)
°
°
°
BLOCK DIAGRAMS
R3117xxxxA
R3117xxxxC
(Nch. open drain output)
(CMOS output)
SENSE
SENSE
VDD
DOUT
VDD
DOUT
Vref
Vref
GND
GND
SELECTION GUIDES
TIMING CHARTS
Supply Voltage
Halogen Free
Package
Q'ty per Reel
Part No.
(VDD)
Minimum Operating
Voltage
VDDL
R3117K
R3117K
.
xx
xx
.
1
3
.
∗-TR
∗-TR
DFN(PLP)1010-4 10,000 pcs
.
.
.
Detector Threshold
Hysteresis
R3117Q
R3117Q
.
xx
xx
.
2
.
∗-TR-FE
∗-TR-FE
Released Voltage
Detector Threshold
SC-88A
3,000 pcs
3,000 pcs
+VDET
.
.
4.
-
VDET
R3117N
R3117N
.
xx
xx
.
1
3
.
∗-TR-FE
∗-TR-FE
SENSE Pin Voltage
SOT-23-5
(VSENSE)
.
.
.
GND
.
xx
.
: Specify the detector threshold within the range of
Pull-up Voltage
GND
0.7V (
.
07
.
) to 5.0V (
.
50
.
) in 0.1V steps.
Output Voltage
(VOUT)
.
.
: Select the output type from (
.
A
.
) Nch. open drain or (
.
C
.
) CMOS.
∗
PACKAGES
tPHL
tPLH
R3117xxxxA
DFN(PLP)1010-4
SC-88A
SOT-23-5
Supply Voltage
5
4
Top View
Bottom View
5
4
(VDD)
4
3
3 4
Minimum Operating
Voltage
VDDL
∗
Detector Threshold
Hysteresis
Released Voltage
Detector Threshold
+VDET
-
VDET
1
2
3
1
2
2
1
1
2
3
SENSE Pin Voltage
(VSENSE)
GND
1
2
3
4
DOUT
SENSE
GND
1
2
3
4
5
VDD
NC
GND
SENSE
DOUT
1
2
3
4
5
DOUT
VDD
GND
NC
Supply Voltage (VDD)
Output Voltage
(VOUT)
VDD
GND
SENSE
) The tab is substrate level (GND).
∗
tPHL
tPLH
R3117xxxxC
APPLICATIONS
• Microcontroller and logic circuit reset
• Wave shaping circuit
• Battery checker
• Battery back-up circuit
• Window comparator
• Power failure detector
No.EK-186-121001
CMOS Voltage Detector