DS3668N National Semiconductor, DS3668N Datasheet

DS3668N

Manufacturer Part Number

DS3668N

Description

Power Driver IC

Manufacturer

National Semiconductor

Datasheets

1.DS3668N.pdf (5 pages)

2.DS3668N.pdf (4 pages)

Specifications of DS3668N

Supply Voltage Max

Driver Case Style

DIP

Device Type

Peripheral Driver

Power Driver Type

Peripheral

No. Of Pins

Mounting Type

Through Hole

Output Current Max

600mA

Peak Reflow Compatible (260 C)

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

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C 1995 National Semiconductor Corporation

DS3668 Quad Fault Protected Peripheral Driver

General Description

The DS3668 quad peripheral driver is designed for those

applications where low operating power high breakdown

voltage high output current and low output ON voltage are

required Unlike most peripheral drivers available a unique

fault protection circuit is incorporated on each output When

the load current exceeds 1 0A (approximately) on any out-

put for more than a built-in delay time nominally 12 s that

output will be shut off by its protection circuitry with no effect

on other outputs This condition will prevail until that protec-

tion circuitry is reset by toggling the corresponding input or

the enable pin low for at least 1 0

provided to ensure that the protection circuitry is not trig-

gered by turn-on surge currents associated with certain

kinds of loads

The DS3668’s inputs combine TTL compatibility with high

input impedance In fact its extreme low input current al-

lows it to be driven directly by a MOS device The outputs

are capable of sinking 600 mA each and offer a 70V break-

down However for inductive loads the output should be

clamped to 35V or less to avoid latch up during turn off

(inductive fly-back protection

clamp diode capable of handling 800 mA is provided at

each output for this purpose In addition the DS3668 incor-

porates circuitry that guarantees glitch-free power up or

down operation and a fail-safe feature which puts the output

in a high impedance state when the input is open

The molded package is specifically constructed to allow in-

creased power dissipation over conventional packages The

four ground pins are directly connected to the device chip

with a special copper lead frame When the quad driver is

soldered into a PC board the power rating of the device

improves significantly

Connection Diagram

Dual-In-Line Package

Top View

TL F 5225

refer AN-213) An on-chip

s This built-in delay is

TL F 5225 – 1

Applications

Features

Truth Table

Relay drivers

Solenoid drivers

Hammer drivers

Stepping motor drivers

Triac drivers

LED drivers

High current high voltage drivers

Level translators

Fiber optic LED drivers

Output fault protection

High impedance TTL compatible inputs

High output current 600 mA per output

No output latch-up at 35V

Low output ON voltage (550 mV typ

High breakdown voltage (70V)

Open collector outputs

Output clamp diodes for inductive fly-back protection

NPN inputs for minimal input currents (1 A typical)

Low operating power

Standard 5V power supply

Power up down protection

Fail-safe operation

2W power package

Pin-for-pin compatible with SN75437

See NS Package Number N16E

Low state

High state

High impedance state

Order Number DS3668N

OUT

RRD-B30M105 Printed in U S A

600 mA)

March 1995

Related parts for DS3668N

DS3668N Summary of contents

Page 1

... Standard 5V power supply Y Power up down protection Y Fail-safe operation Y 2W power package Y Pin-for-pin compatible with SN75437 Y Truth Table High state e L Low state e Z High impedance state e Order Number DS3668N TL F 5225 – 1 See NS Package Number N16E March 1995 600 mA) OUT RRD-B30M105 Printed ...

Page 2

... Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Input Voltage Output Voltage Continuous Power Dissipation ( Free-Air Storage Temperature Range Lead Temperature (Soldering 4 seconds) Electrical Characteristics (Notes 2 and 3) ...

Page 3

AC Test Circuit Includes probe and jig capacitance Typical Application are the windings of a bifilar stepping motor V MOTOR Protection Circuit Block Diagram Switching Waveforms TL F 5225 – 2 Stepping Motor Driver is the ...

Page 4

... National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications Molded Dual-In-Line Package (N) Order Number DS3668N NS Package Number N16E 2 A critical component is any component of a life ...

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