TL7757 Supply-Voltage Supervisor And Precision Voltage Detector | TI.com

TL7757 (ACTIVE) Supply-Voltage Supervisor And Precision Voltage Detector

Supply-Voltage Supervisor And Precision Voltage Detector - TL7757
Datasheet
 

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.

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

Parametrics

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Part number Order Threshold voltage 1 (Typ) (V) Number of supplies monitored VCC (Max) (V) VCC (Min) (V) Output driver type/reset output Time delay (ms) Features Rating Operating temperature range (C) Watchdog timer WDI (sec)
TL7757 Order now 4.55     1     7     1     Active-low
Open-drain    
Programmable     Wide input voltage     Catalog     -40 to 85
0 to 70    
None    
TL7759 Order now 4.55     1     7     1     Active-high
Active-low
Open-drain    
Programmable     Wide input voltage
Dual output    
Catalog     0 to 70     None