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1 / 8 page © Semiconductor Components Industries, LLC, 1999 October, 1999 – Rev. 3 1 Publication Order Number: MC33465/D MC33465 Micropower Undervoltage Sensing Circuits with Programmable Output Delay The MC33465 series are micropower undervoltage sensing circuits that are specifically designed for use with battery powered microprocessor based systems, where extended battery life is required. A choice of several threshold voltages from 0.9 V to 4.5 V are available. This device features a very low quiescent bias current of 1.0 µA typical. The MC33465 series features a highly accurate voltage reference, a comparator with precise thresholds and built–in hysteresis to prevent erratic reset operation, a choice of output configurations between open drain or complementary, a time delayed output, which can be programmed by the system designer, and guaranteed operation below 1.0 V with extremely low standby current. This device is available in a SOT–23 5–pin surface mount package. Applications include direct monitoring of the MPU/logic power supply used in appliance, automotive, industrial and portable equipment. Features: • Extremely Low Standby Current of 1.0 µA at Vin = 3.5 V • Wide Input Voltage Range (0.7 V to 10 V) • Monitors Power Supply Voltages from 1.1 V to 5.0 V • High Accuracy Detector Threshold (±2.5%) • Two Reset Output Types (Open Drain or Complementary Drive) • Programmable Output Delay by External Capacitor (100 ms typ. with 0.15 µF) • Surface Mount Package (SOT–23 5–Pin) • Convenient Tape and Reel (3000 per Reel) Representative Block Diagrams This device contains 28 active transistors. MC33465N–YYATR Open Drain Output Configuration MC33465N–YYCTR Complementary Output Configuration YY Denotes Threshold Voltage Vref 2 Input 1 Reset 3 Gnd 5CD RD Vref 2 Input 3 Gnd 5CD RD 1 Reset SOT–23–5 N SUFFIX CASE 1212 http://onsemi.com PIN CONNECTIONS 5 1 15 4 2 3 (Top View) Reset Input Ground CD N/C See detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet. ORDERING INFORMATION |
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