Push-pull Reset output and SOT23-3 supervisory IC
The PT7M78xx family microprocessor (µP) supervisory circuits are targeted to improve reliability and accuracy of power-supply circuitry in µP systems. These devices reduce the complexity and number of components required to monitor power-supply and battery functions.
The main functions are:
1. Asserting reset output during power-up, power-down and brownout conditions for µP system.
2. Detecting power failure or low-battery conditions with a 1.25V threshold detector
3. Watchdog functions
4. Manual reset.
· Precision supply-voltage monitor
o 4.63V (PT7M78xxL)
o 4.38V (PT7M78xxM)
o 3.08V (PT7M78xxT)
o 2.93V (PT7M78xxS)
o 2.63V (PT7M78xxR)
o 2.32V (PT7M78xxZ)
o 2.20V (PT7M78xxY)
o 4.00V (PT7M78xxJ)
o 2.25V (PT7M78xxK)
o 2.80V (PT7M78xxG)
· 200ms reset pulse width
· Debounced CMOS-compatible manual-reset input (7811, 7812, 7823, 7825)
· Reset Output Signal for Watchdog and Power
· Abnormal, Manual Reset
· Reset Push-Pull output (PT7M7809,7811,7823,7824,7825)
· Reset Open-Drain output (PT7M7803)
· Voltage monitor for power-fail or low battery warning
· Guaranteed RESET/RESET valid at VCC=1.0V
· Power-supply circuitry in µP systems
· Networking
· Security System
· Server/Storage
· Embedded System
Fixed Detect Voltages | 2.2, 2.25, 2.32, 2.63, 2.80, 2.93, 3.08, 4, 4.38, 4.63 V |
Adjustable Detect voltage reference voltage | N/A V |
Number of Channels | 1 |
Minimum Operating Voltage | 1 V |
Maximum Input | 5.5 V |
Quiescent Current | 10 µA |
Typical Time Delay | N/A µs |
