LM3704 datasheet(3/18 Pages) TI1

No de pièce	LM3704

Description	Voltage Supervisor With Power-Fail Input, Low-Line Output and Manual Reset

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Fabricant	TI1 [Texas Instruments]

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1

VCC

10

RESET

2

MR

9

NC

3

PFI

8

PFO

4

NC

7

LLO

5

GND

6

NC

3

LM3704

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SNVS088F – MAY 2004 – REVISED APRIL 2016

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5 Pin Configuration and Functions

DGS Package

10-Pin VSSOP

Top View

Pin Functions

I/O

DESCRIPTION

NO.

NAME

1

VCC

I

Power supply input.

2

MR

I

Manual-reset input. When MR is less than VMRT (manual reset threshold) RESET/RESET is engaged.

3

PFI

I

Power-fail comparator input. When PFI is less than VPFT (power-fail reset threshold), the PFO goes low.

Otherwise, PFO remains high.

4

NC

—

No connection.

5

GND

—

Ground reference for all signals.

6

NC

—

No connection.

7

LLO

O

Low-line logic output. Early power-fail warning output. Low when VCC falls below VLLOT (low-line output

threshold). This output can be used to generate an NMI (non-maskable interrupt) to provide an early

warning of imminent power failure.

8

PFO

O

Power-fail logic output. When PFI is below VPFT, PFO goes low; otherwise, PFO remains high.

9

NC

—

No connection. Test input used at factory only. Leave floating.

10

RESET

O

Reset logic output. Pulses low for tRP (reset time-out period) when triggered, and stays low whenever

VCC is below the reset threshold or when MR is below VMRT. It remains low for tRP after either VCC rises

above the reset threshold, or after MR input rises above VMRT.

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