Datasheet > UT01VS50L

UT01VS50L

更新时间： 2024-11-10 01:13:23

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艾法斯 - AEROFLEX		/
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描述
UT01VS50L Voltage Supervisor

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UT01VS50L 数据手册

Standard Products

UT01VS50L Voltage Supervisor

Data Sheet

July 28, 2014

www.aeroflex.com/voltsupv

FEATURES

INTRODUCTION

 4.75V to 5.5V Operating voltage range

The UT01VS50L’s function is to monitor vital supply and signal

voltages in microprocessor systems. It provides for safe reset

during power up, power down and brownout conditions by using

an internal precision voltage reference.

 Power supply (V ) monitor set by the internal voltage

reference at 4.65V

 Precision Input Voltage Monitor using an internal 1.25V

voltage reference

 Watchdog Timer Circuit monitoring activity on WDI input

The UT01VS50L monitors activity at an independent watchdog

input by employing an internal timer and a watchdog output that

goes low if the input is not toggled within 1.6s. It provides for

precision voltage threshold detection on an independent voltage

input which could be used for battery or supply-low monitoring

- Nominal timeout 1.6s

 RESET output responding to the V monitor and the

manual reset input MR

- Nominal RESET pulse width 200ms

of a supply voltage other than V

 RESET level valid for V >=1.2V

The UT01VS50L includes an active low manual reset with an

internal pull-up.

 Operating Temperature Range -55 C to +125 C

 Low Power, Typical 400uA



Operational environment:

- Total dose: 300 krad(Si)

APPLICATIONS

- SEL Immune: <110 MeV-cm /mg @125 C

 Voltage Supervisor function for various systems including

microprocessors, microcontrollers, DSPs and FPGAs

 Critical battery and power supply monitoring

 Replacement of older discrete solutions to improve reliability,

accuracy and reduce complexity of the systems

- SET Immune: <80 MeV-cm /mg

Packaging options:



- 8-lead dual-in-line flatpack

Standard Microelectronics Drawing (SMD) 5962-11213

- QML Q and V

WDO

RESET &

DIGITAL CONTROL

RESET

VDD

WDI TIMER

4.65 V

GND

PFI

VREF

WDI TRANSITION

DETECTOR

OSC

1.25 V

WDI

PFO

Figure 1. UT01VS50L Functional Block Diagram

12 3 4 5 6 7...15

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