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CAT803: Voltage Supervisor, Open Drain, Active Low

Datasheet: 3-Pin Microprocessor Power Supply Supervisors
Rev. 34 (86kB)
Product Overview
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The CAT803 is a uP supervisory circuits that monitor power supplies in digital systems. The CAT803 is a direct replacement for the MAX803 in applications operating over the industrial temperature range.

This device generates a reset signal, which is asserted while the power supply voltage is below a preset threshold level and for at least 140 ms after the power supply level has risen above that level. The underlying floating gate technology, Analog EEPROM used by ON Semiconductor, makes it possible to offer any custom reset threshold value. Seven industry standard threshold levels are offered to support +5.0 V, +3.3 V, +3.0 V and +2.5 V systems. The CAT803 has an open-drain RESET output (active LOW). The CAT803 requires a pull-up resistor on the reset output.

Fast transients on the power supply are ignored and the output is guaranteed to be in the correct state at Vcc levels as low as 1.0 V.

The CAT803 is available in both the compact 3-pin SOT-23 and SC70 packages.
Features
 
  • Precision monitoring of
    +5.0V (-5%, -10%, -20%),
    +3.3V (-5%, -10%),
    +3.0V (-10%) and
    +2.5V (-5%) power supplies
  • Offered in three output configurations:
    - CAT803: Open-Drain Active LOW reset
  • Direct replacements for the MAX803 in applications operating over the industrial temperature range
  • Reset valid down to VCC = 1.0 V
  • 6 μA power supply current
  • Power supply transient immunity
  • Industrial temperature range: -40˚C to +85˚C
  • Available in RoHS-compliant SOT-23 and SC70 packages
  • These Devices are Pb Free and are RoHS Compliant
Applications
  • Computers
  • Servers
  • Laptops
  • Cable modems
  • Wireless communications
  • Embedded control systems
  • White goods
  • Power meters
  • Intelligent instruments
  • PDAs and handheld equipment
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (1)
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
CAT803SSDI-GT3 Active
Pb-free
Halide free
CAT803 SC-70-3 / SOT-323-3 419AB 1 260 Tape and Reel 3000 $0.2
Market Leadtime (weeks) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 186,000
PandS   (2020-09-14 00:00) : <100

Product
Description
Pricing ($/Unit)
Compliance
Status
Voltages Monitored
VCC Max (V)
V(TO) Typ (V)
IQ Typ (µA)
Reset Active State
Reset Timer
Manual Reset
Watchdog Timer
Package Type
CAT803SSDI-GT3  
 $0.2 
Pb
H
 Active   
1
5.5
2.93
6
Low
Yes
No
No
SC-70-3 / SOT-323-3
Case Outlines
419AB   
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