PST90xx

MITSUMI IC for System Reset PST90XX IC for System Reset Monolithic IC PST90XX Series Outline November 9, 2001 The function of this low voltage detection 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 systems. 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. Features 1. High precision voltage detection VS±2.5% max. 2. Super low current consumption ICCH=1.5µA typ. ICCL=1µA typ. 3. Low operating threshold voltage 0.7V max. 4. Hysteresis voltage is provided as a detect voltage Vs 5% typ. 5. The detect voltage can be selected at your discretion at 0.1 V step within the range of 0.8 to 1.8V by the following stipulation method. PST90XX Detected voltage value (Example : for 0.8V ······ PST9008) Packages TO-92A (PST90 SOT-25A (PST90 ) N) www.DataSheet4U.com Applications 1. 2. 3. 4. 5. Reset circuits for microcomputers, CPUs and MPUs Reset circuits for logic circuits Battery voltage check circuits Back-up power supply switching circuits Level detection circuits Pin Assignment 1 1 2 3 1 2 3 VOUT VCC GND 1 2 3 5 4 2 3 4 5 SOT-25A (TOP VIEW) Note : The pin 2 of SOT-25 package is a SUB terminal. Connect it to GND. TO-92A NC SUB GND VOUT VCC MITSUMI IC for System Reset PST90XX Equivalent Circuit Diagram Absolute Maximum Ratin...