R3116K321A Datasheet PDF - RICOH
| Part Number | R3116K321A | |
| Description | 0.8% Low Voltage Detector | |
| Manufacturers | RICOH | |
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R3116x Series
0.8% Low Voltage Detector with Output Delay
NO.EA-161-140819
OUTLINE
The R3116x series are CMOS-based voltage detector ICs with high detector threshold accuracy and ultra-low
supply current, which can be operated at an extremely low voltage and is used for system reset as an example.
Each of these ICs consists of a voltage reference unit, a comparator, resistors for detector threshold setting,
an output driver, a hysteresis circuit and an output delay circuit. The detector threshold is internally fixed with high
accuracy and does not require any adjustment.
Two output types, Nch open drain type and CMOS type are available.
The R3116x series are operable at a lower voltage than that of the R3112x series, and can be driven by a
single battery.
Three types of packages, SOT-23-5, SC-82AB, and DFN(PLP)1010-4 are available.
FEATURES
• Supply Current ......................................................................Typ. 0.35μA (-VDET=1.5V, VDD=-VDET+1V)
• Operating Voltage Range......................................................0.5V to 6.0V (Topt=25°C)
• Detector Threshold Range....................................................0.7V to 5.0V (0.1V step)
• Detector Threshold Accuracy................................................±0.8% (-VDET ≥ 1.5V)
• Temperature-Drift Coefficient of Detector Threshold ............Typ. ±30ppm/°C
• Built-in Output Delay Circuit..................................................Typ. 100ms with an external capacitor: 0.022μF
• Output Delay Time Accuracy.................................................±15% (-VDET ≥ 1.5V)
• Output Types.........................................................................Nch Open Drain "L" and CMOS
• Packages ..............................................................................DFN(PLP)1010-4, SC-82AB, SOT-23-5
APPLICATIONS
• CPU and Logic Circuit Reset
• Battery Checker
• Window Comparator
• Wave Shaping Circuit
• Battery Back-up Circuit
• Power Failure Detector
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R3116x
NO.EA-161-140819
ELECTRICAL CHARACTERISTICS
• R3116xxx1A/C
values indicate −40°C ≤ Topt ≤ 85°C, unless otherwise noted.
(Topt=25°C)
Symbol
Item
Conditions
Min. Typ. Max. Unit
-VDET Detector Threshold
VHYS
Detector Threshold
Hysteresis
ISS Supply Current
Topt=25°C
−40°C ≤ Topt ≤ 85°C
VDD=-VDET −0.1V
VDD=-VDET +1.0V
1.5V < -VDET ≤ 5.0V
0.7V ≤ -VDET ≤ 1.5V
1.5V < -VDET ≤ 5.0V
0.7V ≤ -VDET ≤ 1.5V
0.7V ≤ -VDET < 1.6V
1.6V ≤ -VDET < 3.1V
3.1V ≤ -VDET < 4.1V
4.1V ≤ -VDET ≤ 5.0V
0.7V ≤ -VDET < 1.6V
1.6V ≤ -VDET < 3.1V
3.1V ≤ -VDET < 4.1V
4.1V ≤ -VDET ≤ 5.0V
-VDET
× 0.992
-12
-VDET
× 0.985
-22.5
-VDET
× 0.04
-VDET
×1.008
+12
-VDET
× 1.015
+22.5
-VDET
× 0.07
1.400
1.500
1.600
1.700
1.200
1.200
1.300
1.400
V
mV
V
mV
V
μA
VDDH Maximum Operating Voltage
6V
VDDL
Minimum Operating
Voltage∗1
Topt=25°C
−40°C ≤ Topt ≤ 85°C
VDD=0.55V, VDS=0.05V
0.50
0.55
V
7 μA
0.7V ≤ -VDET < 1.1V VDD=0.6V, VDS=0.5V 0.020
IOUT
Output Current
(Driver Output Pin)
Nch 1.1V ≤ -VDET < 1.6V VDD=1.0V, VDS=0.5V 0.400
1.6V ≤ -VDET < 3.1V VDD=1.5V, VDS=0.5V 1.000
3.1V ≤ -VDET ≤ 5.0V VDD=3.0V, VDS=0.5V 2.400
mA
Pch∗2 0.7V ≤ -VDET < 4.0V VDD=4.5V, VDS=−2.1V 0.650
4.0V ≤ -VDET ≤ 5.0V VDD=6.0V, VDS=−2.1V 0.900
mA
ILEAK Nch Driver Leakage Current∗3 VDD=6.0V, VDS=7.0V
80 nA
Δ-VDET/ Detector Threshold
ΔTopt Temperature Coefficient
±30
ppm
/°C
tD
Output Delay Time
CD=0.022μF
VDD=-VDET−0.1V
to -VDET×1.1V
Topt=25°C
−40°C ≤
Topt ≤ 85°C
0.7V ≤ -VDET < 1.5V
1.5V ≤ -VDET ≤ 5.0V
0.7V ≤ -VDET < 1.5V
1.5V ≤ -VDET ≤ 5.0V
80
85
70
75
100
130
115
150
100 135
ms
All of unit are tested and specified under load conditions such that Topt=25°C except for Detector Threshold
Temperature Coefficient.
*1: Minimum operating voltage means the value of input voltage when output voltage maintains 0.1V or less.
(In case of Nch Open Drain Output type, the output pin is pulled up with a resistance of 470kΩ to 5.0V)
*2: In case of CMOS type
*3: In case of Nch Open Drain type
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