PST91XX MITSUMI | Alldatasheet

Document overview

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Technical content

Features

  1. High precision voltage detection Vs±3% max. 3. Low operating threshold voltage 0.65V typ. 4. Hysteresis voltage is provided as a detect voltage 50mV typ. 5. Large output current at the time ON 15mA typ. 6. The detect voltage can be selected at your discretion at 0.1V step within the range of 1.9 to 4.6V by the following stipulation method. PST91XX Detected voltage value (Example : for 4.2V ······ PST9142) Package TO-92A (PST91 ) SOT-25A (PST91 N)

Applications

  1. Reset circuits for microcomputers, CPU and MPU. 2. Reset circuit for logic circuitry. 3. Battery voltage check circuit. 4. Circuit for changing over to backup battery. 5. Level detecting circuit. Pin Assignment 123 TO-92A 123 SOT-25A (Note) The pin 2 of SOT-25 package is a SUB terminal. Connect it to GND.

1 VOUT

2 VCC

3 GND

2 SUB

4 VOUT

5 VCC

MITSUMI System Reset PST91XX Absolute Maximum Ratings (Ta=25° C) Electrical Characteristics (Ta=25° C) (The unit of resistance is Ω unless otherwise indicated.) Equivalent Circuit Diagram Item Symbol Ratings Units Storage temperature TSTG -40~+125 ° C Operating temperature TOPR -20~+75 ° C Power supply voltage VCC -0.3~10 V Allowable loss Pd 150 (SOT-25A) mV300 (TO-92A) Item Symbol Measurement Measurement conditions Min. Typ. Max. Units Circuit 4.6~ Detection Voltage VS 1 V VCC=H L typ. (0.1V typ. step) Hysteresis Voltage VS 1R L=470, VCC=L H L 30 50 100 mV Detection Voltage Temperature Coefficient Low Level Output Voltage VOL 1 VCC=VS min.-0.05V, RL=470 0.2 0.4 V Output Leakage Current IOH 1V CC=10V 0.1 µA Circuit Current at ON Time ICCL1 VCC=VS min.-0.05V, RL=∞ 1.0 2.0 µA Circuit Current at OFF Time ICCH1V CC=VS typ./0.85V, RL=∞ 1.5 2.5 µA "H" Transmission Delay Time tpLH 2 C L=100pF, RL=4.7k 20 60 µS "L" Transmission Delay Time tpHL 2 C L=100pF, RL=4.7k 20 60 µS Operating Threshold Voltage VOPL1 R L=4.7k, VOL <= 0.4V 0.65 0.85 V Output Current at ON Time 1 IOL1 1 R L=0, VCC=VS min.-0.05V 5 mA Output Current at ON Time 2 IOL2 1 Ta=-20~+75° C 3m A RL=0, VCC=VS min.-0.05V

MITSUMI System Reset PST91XX Application Circuits Characteristics (Example: PST9145) -20-1 00 1 02 03 04 05 06 07 00 100 Ta (°C) VS (mV) -20-1 00 1 02 03 04 05 06 07 00 0.5 1.5 2.5 Ta (°C) ICCH (µA) ICCH vs. Ta V S vs. Ta -20-1 00 1 02 03 04 05 06 07 00 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 Ta (°C) VopL (V) VOpL vs. Ta -20-1 00 1 02 03 04 05 06 07 0 100 120 140 160 180 200 220 240 Ta (°C) VOL (mV) VOL vs. Ta -20-1 00 1 02 03 04 05 06 07 020 Ta (°C) IOL (mA) -20-1 00 1 02 03 04 05 06 07 04.35 4.40 4.45 4.50 4.55 4.60 4.65 Ta (°C) VS (mV) VS vs. Ta I OL vs. Ta