Description:

The TL7757 is a power supply voltage monitor designed for use in microcomputer and microprocessor systems. The ADR5043BKSZ-REEL7 monitor monitors the power supply voltage for undervoltage conditions. During power up, when the power supply voltage VCC reaches a value close to 1 V, the RESET  output becomes active (low level) to prevent undefined operation. If the power supply voltage drops below the threshold voltage level (V IT –), the RESET  output becomes active (low) until the power supply undervoltage fault condition is eliminated.

characteristic:

● Power on reset generator

● Automatic reset generation after voltage drop

● Low standby current twenty μ A

● RESET  output definition when V CC exceeds 1 V

Precision threshold voltage 4.55V ± 120mV

● High output absorption 20 mA

● Comparator hysteresis prevents unstable resets

Parameters:

Quantity of consumables monitored: 1

Threshold voltage 1 (Typ) (V): 4.55

Feature: Wide input voltage

Reset threshold accuracy (%): 2.6

Output drive type/reset output: effective at low level, open drain

Time delay (milliseconds): programmable

Watchdog timer WDI (s): None

Operating temperature range (℃): - 40 to 85, 0 to 70

◆ Equivalent schematic diagram