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S72N31UF Dataheets PDF



Part Number S72N31UF
Manufacturers AUK corp
Logo AUK corp
Description Standard Voltage Detector
Datasheet S72N31UF DatasheetS72N31UF Datasheet (PDF)

7 Semiconductor S72NxxUF Standard Voltage Detector Description The function of this low reset Type IC is to accurately reset systems after detecting the supply voltage at the time of switching power on and instantaneous power off in various CPU and other logic system. Further, this IC, with its super low consumption current is most suited as a voltage check circuit for a number of products which use batteries. Features • Super low current consumption (ICCL = 1.0uA Typ.) • High current of out.

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7 Semiconductor S72NxxUF Standard Voltage Detector Description The function of this low reset Type IC is to accurately reset systems after detecting the supply voltage at the time of switching power on and instantaneous power off in various CPU and other logic system. Further, this IC, with its super low consumption current is most suited as a voltage check circuit for a number of products which use batteries. Features • Super low current consumption (ICCL = 1.0uA Typ.) • High current of output transistor (IOL=20mA Typ.) • Hysteresis circuit built in (△VS=100mV Typ.) • It has on delay function to supplement the constant of outer C and R. Applications • Reset circuits for microcomputers, CPU and MPU. • Reset circuit for logic circuitry. • Battery voltage check circuit. • Circuit for changing over to backup battery. • Level detecting circuit. Ordering Information Type NO. S72NxxUF Marking N□□ □□: Detecting Voltage Code Package Code SOT-323F Outline Dimensions 2.1±0.1 0.30~0.40 0.70-0.15 +0.1 1.30±0.1 1 1.30 BSC 2.0±0.1 3 2 0.11±0.05 PIN Connections 1. OUT 2. GND 3. Vcc KSI-2056-000 0~0.1 1 S72NxxUF Equivalent Circuit Diagram Vcc OUT GND Maximum ratings Characteristic Supply voltage Power Dissipation (Package Limitation) Operating Temperature Storage Temperature Symbol Vcc PD * Topr Tstg Ratings -0.3 ~ +10 200 -20 ~ +75 -40 ~ +125 (Ta=25°C) Unit V mW ℃ ℃ * With PCB(8×8 ㎜ Copper Area) at Glass Epoxy Board (t=1.7 ㎜, Area; 20×20 ㎜) Electrical Characteristics Characteristic Detecting Voltage Hysteresis Voltage Temperature Coefficient Of detecting voltage Low Level Output voltage Circuit current at ON Circuit current at OFF Threshold Operating Voltage Output Current at ON I Output Current at ON II L→H Transmission delay time H→L Transmission delay time (Vcc=5V, Ta=25°C) Test Circuit 1 1 1 1 1 1 1 1 1 2 2 RL=470Ω,VCC=L→H→L RL=470Ω, Ta= -20~75℃ RL=470Ω, VCC= VS Min RL=∞Ω, VCC= VS Min RL=∞Ω,VCC=VS Max +0.1V RL=4.7 ㏀, VOL≤0.4V RL=0Ω, VCC= VS Min RL=0Ω, VCC= VS Min , Ta= -20~75℃ RL=4.7 ㏀, CL=100 ㎊ RL=4.7 ㏀, CL=100 ㎊ Symbol VS ΔVS VS/ΔT VOL ICCL ICCH Vopr IOL 1 IOL 2 tPLH tPHL Test Condition Min. * See Table 1 40 10 5 - Typ. Max. Unit 100 ±0.01 0.1 100 1.0 1.4 20 100 10 300 0.4 180 2.5 1.6 500 20 mV %/℃ V µA µA V mA mA ㎲ ㎲ KSI-2056-000 2 S72NxxUF * Table 1 Electrical Characteristics Characteristic Symbol Test Circuit Test Condition S72N45UF S72N42UF S72N39UF S72N36UF (Vcc=5V, Ta=25°C) Min. 4.30 4.00 3.70 3.40 3.10 2.90 2.75 2.55 2.35 2.15 Typ. 4.5 4.2 3.9 3.6 3.3 3.1 2.9 2.7 2.5 2.3 Max. 4.70 4.40 4.10 3.80 3.50 3.30 3.05 2.85 2.65 2.45 Unit Detecting voltage VS 1 RL=470Ω VCC=H→L VOL≤0.4V S72N33UF S72N31UF S72N29UF S72N27UF S72N25UF S72N23UF V KSI-2056-000 3 S72NxxUF Test Circuit 1 Test Circuit 2 Application Circuit (1) Battery Low Indicator (2) CPU Resetting (Note) (1) Connecting of LED and R2 obtains a voltage drop indicator. (2) Connecting of C1 and selection of time constant with C1 and R1 set the power on.


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