TL77xxA Supply-Voltage Supervisors

1 Features

• Power-On Reset Generator
• Automatic Reset Generation After Voltage Drop
• Wide Supply-Voltage Range
• Precision Voltage Sensor
• Temperature-Compensated Voltage Reference
• Externally Adjustable Pulse Duration

2 Applications

• Computers
• Tablets
• Smart Phones
• Servers
• Music Players

3 Description

The TL77xxA family of integrated-circuit supply-voltage supervisors is designed specifically for use as reset controllers in microcomputer and microprocessor systems. The supply-voltage supervisor monitors the supply for undervoltage conditions at the SENSE input. During power up, the RESET output becomes active (low) when V_CC attains a value approaching 3.6 V. At this point (assuming that SENSE is above V_IT+), the delay timer function activates a time delay, after which outputs RESET and RESET go inactive (high and low, respectively). When an undervoltage condition occurs during normal operation, RESET and RESET go active.

1. For all available packages, see the orderable addendum at the end of the datasheet.

Three-Supply Monitoring

4 Revision History

Changes from J Revision (January 2015) to K Revision

• Added SO (8) to Device Information tableGo
• Changed RESET to RESET in Timing DiagramGo
• Added Receiving Notification of Documentation Updates sectionGo

Changes from I Revision (July 2009) to J Revision

• Added Applications, Device Information table, Pin Functions table, ESD Ratings table, Thermal Information table, Typical Characteristics, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section.Go
• Deleted Ordering Information table.Go