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Product details

Parameters

Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) 4.55 Features Wide input voltage Reset threshold accuracy (%) 2.6 Output driver type/reset output Active-low, Open-drain Time delay (ms) Programmable Rating Catalog Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 85, 0 to 70 open-in-new Find other Supervisor & reset ICs

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 SOT-89 (PK) 3 18 mm² 4.5 x 4.095 TO-92 (LP) 3 19 mm² 5.2 x 3.68 open-in-new Find other Supervisor & reset ICs

Features

  • Power-On Reset Generator
  • Automatic Reset Generation After Voltage Drop
  • Low Standby Current ...20 µA
  • RESET\ Output Defined When VCC Exceeds 1 V
  • Precision Threshold Voltage 4.55 V ±120 mV
  • High Output Sink Capability ...20 mA
  • Comparator Hysteresis Prevents Erratic Resets

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Description

The TL7757 is a supply-voltage supervisor designed for use in microcomputer and microprocessor systems. The supervisor monitors the supply voltage for undervoltage conditions. During power up, when the supply voltage, VCC, attains a value approaching 1 V, the RESET\ output becomes active (low) to prevent undefined operation. If the supply voltage drops below threshold voltage level (VIT–), the RESET\ output goes to the active (low) level until the supply undervoltage fault condition is eliminated.

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Technical documentation

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Type Title Date
* Data sheet TL7757 datasheet (Rev. I) Sep. 14, 2006
Technical article What’s not in the power MOSFET data sheet part 2: voltage-dependent leakage currents Jul. 23, 2021
Selection guide Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) Feb. 28, 2020
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs Sep. 19, 2011

Design & development

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CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
SOT-89 (PK) 3 View options
TO-92 (LP) 3 View options

Ordering & quality

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