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UTC 81XX POWER RESET IC DESCRIPTION LINEAR INTEGRATED CIRCUIT 2 1 The function of UTC 81XX is to accurately reset system after detecting the supply voltage at the time of switching power on and instantaneous power off in various CPU and other logic systems. Further, this IC, with its super low consumption current and high precision voltage detection capacity, is most suited as a voltage check circuit for a number of products which use batteries. 3 1 SOT-23 TO-92 1 FEATURES *High precision voltage detection. (Vs±3% max) *low current consumption. (ICCH=15µA typ. ICCL=10µA typ.) *Low operating threshold voltage (0.65V typ.) *Hystresis voltage is provided as a detect voltage. (50mV typ.) *Large output current at the time ON (15mA typ.) *The detect voltage can be selected at your discretion at 0.1V step within the range of 1.9V to 4.6V by the following stipulation method. UTC 81XX (XX : detected voltage value) 3 2 1 5 4 SOT-25 SOT-89 SOT-23 : SEE PAGE 2 SOT-25 : SEE PAGE 2 TO-92 1: VOUT; 2: VCC; 3: GND SOT-89 1: VCC 2: GND 3: VOUT 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. BLOCK DIAGRAM The Pin2 this product is SUB, so connect the pin to Ground. UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R119-001,I UTC 81XX MARKING INFORMATION PACKAGE PIN CODE 2 SOT-23 3 VOUT PIN 1 VCC LINEAR INTEGRATED CIRCUIT PIN 2 VOU...