MC33465 Datasheet, PDF (1/8 Pages) ON Semiconductor – Micropower Undervoltage Sensing Circuits with Programmable Ouput Delay

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)
http://onsemi.com
5
1
SOT–23–5
N SUFFIX
CASE 1212
PIN CONNECTIONS
Reset 1
Input 2
Ground 3
5 CD
4 N/C
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
Representative Block Diagrams
MC33465N–YYATR
Open Drain Output Configuration
2 Input
1 Reset
MC33465N–YYCTR
Complementary Output Configuration
2 Input
RD
Vref
3 Gnd 5 CD
RD
Vref
3 Gnd 5 CD
YY Denotes Threshold Voltage
This device contains 28 active transistors.
1
Reset
© Semiconductor Components Industries, LLC, 1999
1
October, 1999 – Rev. 3
Publication Order Number:
MC33465/D