Document
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. Each of these ICs consists of a voltage reference unit, a comparator, resistor net for detector threshold setting, www.DataSheet4U.com 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
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R3112x
BLOCK DIAGRAMS
R3112xxx1A
VDD RD OUT VDD RD
R3112xxx1C
+ -
+
OUT
Vref
GND GND
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Vref
CD
CD
SELECTION GUIDE
The package type, the detector threshold, the output type, and the taping type of R3112x Series can be designated at the users’ request by specifying the part number as follows;
R3112xxx1x-xx-x
↑ ↑ a b Code a ↑ ↑ ↑ c d e
← Part Number
Contents Designation of Package Type; Q: SC-82AB N: SOT-23-5 D: SON1612-6 Setting Detector Threshold (−VDET); Stepwise setting with a step of 0.1V in the range of 0.9V to 5.0V is possible. Designation of Output Type; A: Nch Open Drain C: CMOS Designation of Packing or Taping Type; Ex. SOT-23-5, SC-82AB, SON1612-6: TR is prescribed as standard directions. (Refer to Taping Specifications) Designation of Composition of pin plating; -F: Lead free plating (SOT-23-5, SC-82AB, SON1612-6)
b c
d e
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R3112x
PIN CONFIGURATION
SOT-23-5 SC82-AB
4 3
6
SON1612-6
5 4
5
4
(mark side)
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(mark side)
1
2
3
1 2
1
2
3
PIN DESCRIPTION
•
SOT-23-5
Pin No. 1 2 3 4 5 Symbol OUT VDD GND NC CD Description Output Pin (Output “L” at detector threshold, Output “H” at released voltage) Voltage Supply Pin Ground Pin No Connection Pin for External Capacitor (for setting output delay)
•
SC-82AB
Pin No. 1 2 3 4 Symbol VDD GND CD OUT Voltage Supply Pin Ground Pin Pin for External Capacitor (for setting output delay) Output Pin (Output “L” at detector threshold, Output “H” at released voltage) Description
•
SON1612-6
Pin No. 1 2 3 4 5 6 Symbol OUT GND CD NC GND VDD Description Output Pin (Output “L” at detector threshold, Output “H” at released voltage) Ground Pin Pin for External Capacitor (for setting output delay) No Connection Ground Pin Voltage Supply Pin
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R3112x
ABSOLUTE MAXIMUM RATINGS
Symbol VDD VOUT1 VOUT2 IOUT
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Item Supply Voltage Output Voltage (CMOS) Output Voltage (Nch) Output Current Power Dissipation (SOT-23-5)* Power Dissipation (SC-82AB)* Power Dissipation (SON1612-6)* Operating Temperature Range Storage Temperature Range Lead temperature (Soldering)
Rating 6.5 VSS−0.3 to VDD+0.3 VSS−0.3 to 6.5 20 420 380 500 −40 to 85 −55 to 125 260°C, 10s
Unit V V V mA mW °C °C
Topt Tstg Tsolder
* ) For Power Dissipation, please refer to PACKAGE INFORMATION to be described. ABSOLUTE MAXIMUM RATINGS Absolute Maximum ratings are threshold limit values that must not be exceeded ever for an instant under any conditions. Moreover, such values for any two items must not be reached simultaneously. Operation above these absolute maximum ratings may cause degradation or permanent damage to the device. These are stress ratings only and do not necessarily imply functional operation below these limits.
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R3112x
•
ELECTRICAL CHARACTERISTICS
R3112x091A/C
Symbol −VDET VHYS ISS Item Detector Threshold Detector Threshold Hysteresis Supply Current Maximum Operating Voltage Minimum Operating Voltage∗Note1 Topt=25°C −40°C < = Topt < = 85°C Nch VDS=0.05V, VDD=0.70V VDS=0.50V, VDD=0.85V Pch VDS=−2.1V, VDD=4.5V VDD=0.99V VDS=0.10V, VDD=0.70V VDS=0.50V, VDD=0.85V −40°C
< = < =
Topt=25°C
Conditions
Min. 0.882 0.027
Typ. 0.900 0.045 0.6 0..