|
|
Teilenummer | R3112N291A |
|
Beschreibung | (R3112xxxx) LOW VOLTAGE DETECTOR | |
Hersteller | RICOH electronics devices | |
Logo | ||
Gesamt 30 Seiten R3112x SERIES
LOW VOLTAGE DETECTOR WITH OUTPUT DELAY
NO. EA-087-070112
OUTLINE
The R3112x 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.
www.DataSheet4UE.caomch of these ICs consists of a voltage reference unit, a comparator, resistor net for detector threshold setting,
an output driver, a hysteresis circuit, and an output delay circuit. The detector threshold is fixed with high
accuracy internally and does not require any adjustment. Two output types, Nch open drain type and CMOS type
are available.
Three types of packages, SOT-23-5, small SC-82AB, and ultra-small SON1612-6 can be selected so that high
density mounting on boards is possible.
FEATURES
• Built-in Output Delay Circuit............................................... Typ. 100ms with an external capacitor: 0.022µF
• Supply Current ................................................................... Typ. 0.5µA (R3112x271A/C, VDD=2.6V)
• Operating Voltage .............................................................. 0.7 to 6.0V(Topt=25°C)
• Detector Threshold............................................................. 0.9V to 5.0V
• High Accuracy Detector Threshold .................................... ±2.0%
• Low Temperature-Drift Coefficient of Detector Threshold ...Typ. ±100ppm/°C
• Two Output Types .............................................................. Nch Open Drain and CMOS
• Packages ........................................................................... SOT-23-5(Mini-mold),SC-82AB, SON1612-6
APPLICATIONS
• CPU and Logic Circuit Reset
• Battery Checker
• Window Comparator
• Wave Shaping Circuit
• Battery Back-up Circuit
• Power Failure Detector
1
R3112x
• R3112x271A/C
Symbol
−VDET
VHYS
Item
Detector Threshold
Detector Threshold Hysteresis
ISS Supply Current
VDDH
www.DataSheet4VUD.cDoL m
Maximum Operating Voltage
Minimum Operating Voltage∗Note1
IOUT Output Current (Driver Output Pin)
VTCD
ICD
CD pin Threshold Voltage
CD pin Output Current
RD
∆−VDET/
∆Topt
Output Delay Resistance
Detector Threshold
Temperature Coefficient
Conditions
VDD=2.60V
VDD=3.70V
Topt=25°C
−40°C <= Topt <= 85°C
Nch
VDS=0.05V,VDD=0.70V
VDS=0.50V,VDD=1.50V
Pch
VDS=−2.1V,VDD=4.5V
VDD=2.97V
VDS=0.1V,VDD=0.7V
VDS=0.5V,VDD=1.5V
−40°C <= Topt <= 85°C
Min.
2.646
0.081
Typ.
2.700
1.0
0.5
Topt=25°C
Max.
2.754
0.189
3.0
2.5
6.0
0.7
0.8
Unit
V
V
µA
V
V
10 120
µA
1.0 3.0
mA
1.0 3.5
mA
0.891
2
200
3.25
1.485
70
500
6.50
2.079
13.00
±100
V
µA
MΩ
ppm/
°C
6
6 Page R3112x
TEST CIRCUITS
∗Pull-up circuit is not necessary for CMOS Output type, or R3112xxxxC.
www.DataSheet4U.com
ISS
VDD
VIN R3112x
GND
+5V or VDD
VDD 470kΩ
VIN R3112x
OUT
GND
Supply Current Test Circuit
Detector Threshold Test Circuit
VDD
IOUT
VIN R3112x
OUT
GND
VDS
VDD
IOUT
VIN R3112x
OUT
GND
VDD+VDS
Nch Driver Output Current Test Circuit
+5V or VDD
VDD
470kΩ
CD
VIN R3112x
OUT
VDS
GND
Pch Driver Output Current Test Circuit
∗Apply only to CMOS
VDD
ICD CD
VIN R3112x
VDS
GND
CD Pin Threshold Test Circuit
CD Pin Output Current Test Circuit
+VDET+2.0 or 0.6V
Input
Voltage
0.7V
GND
100%
Output Voltage 50%
GND
+5V
VDD 470kΩ
CD
VIN R3112x
CD OUT
GND
Output Delay Time Test Circuit
12
12 Page | ||
Seiten | Gesamt 30 Seiten | |
PDF Download | [ R3112N291A Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
R3112N291A | (R3112xxxx) LOW VOLTAGE DETECTOR | RICOH electronics devices |
R3112N291C | (R3112xxxx) LOW VOLTAGE DETECTOR | RICOH electronics devices |
Teilenummer | Beschreibung | Hersteller |
CD40175BC | Hex D-Type Flip-Flop / Quad D-Type Flip-Flop. |
Fairchild Semiconductor |
KTD1146 | EPITAXIAL PLANAR NPN TRANSISTOR. |
KEC |
www.Datenblatt-PDF.com | 2020 | Kontakt | Suche |