LM18293N National Semiconductor, LM18293N Datasheet

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LM18293N

Manufacturer Part Number
LM18293N
Description
IC DRIVER PUSH PULL 4CHAN
Manufacturer
National Semiconductor
Type
Driverr
Datasheet

Specifications of LM18293N

Number Of Drivers/receivers
4/0
Voltage - Supply
36V
Mounting Type
Through Hole
Package / Case
*
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Protocol
-
Other names
*LM18293N
LM18293

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© 1998 National Semiconductor Corporation
LM18293
Four Channel Push-Pull Driver
General Description
The LM18293 is designed to drive DC loads up to one amp.
Typical applications include driving such inductive loads as
solenoids, relays and stepper motors along with driving
switching power transistors and use as a buffer for low level
logic signals. The four inputs accept standard TTL and DTL
levels for ease of interfacing. Two enable pins are provided
that also accept the standard TTL and DTL levels. Each en-
able controls 2 channels and when an enable pin is disabled
(tied low), the corresponding outputs are forced to the
TRI-STATE
(i.e., floating), the circuit will function as if it has been en-
abled. Separate pins are provided for the main power supply
(pin 8), and the logic supply (pin 16). This allows a lower volt-
age to be used to bias up the logic resulting in reduced
power dissipation. The chip is packaged in a specially de-
Typical Connection
TRI-STATE
®
using two outputs and unidirectional on/off function of two DC motors using a single output each.
is a registered trademark of National Semiconductor Corp.
®
FIGURE 1. Application circuit showing bidirectional and on/off control of a single DC motor
condition. If the enable pins are not connected
DS008706
NS Package Number N16A
Order Number LM18293N
signed 16 pin power DIP. The 4 center pins of this package
are tied together and form the die paddle inside the package.
This provides much better heat sinking capability than most
other DIP packages available. The device is capable of oper-
ating at voltages up to 36 volts.
Features
n 1A output current capability per channel
n Pin for pin replacement for L293B
n Special 16 pin power DIP package
n 36 volt operation
n Internal thermal overload protection
n Logical “0” input voltage up to 1.5 volts results in high
noise immunity
DS008706-1
www.national.com
March 1998

Related parts for LM18293N

LM18293N Summary of contents

Page 1

... Pin for pin replacement for L293B n Special 16 pin power DIP package n 36 volt operation n Internal thermal overload protection n Logical “0” input voltage up to 1.5 volts results in high noise immunity Order Number LM18293N NS Package Number N16A March 1998 DS008706-1 www.national.com ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Output Drive Supply Voltage ( Logic Supply Voltage ( Input Voltage ( Enable Voltage ( Peak Output Current (Non-Repetitive ms) Electrical Characteristics = 24V 5V 25˚ 0.4V 3.5V, each channel, unless otherwise noted ...

Page 3

Connection Diagram DS008706-2 Enable 1 activates outputs 1 & 2 Enable 2 activates outputs 3 & 4 Simplified Schematic TABLE 1. Input/Output Truth Table (Each Channel ...

Page 4

Typical Performance Characteristics Output Voltage vs. Input Voltage DS008706-12 Source Saturation Voltage vs. Ambient Temperature DS008706-15 www.national.com Output Voltage vs. Enable Voltage DS008706-13 Sink Saturation Voltage vs. Ambient Temperature DS008706-16 4 Saturation Voltage vs. Output Current DS008706-14 Quiescent Logic Supply ...

Page 5

Typical Applications FIGURE 2. DC motor controls (with connections to ground and to the supply voltages) TABLE 2. DC Motor Controls V Pin Pin Fast Motor Stop Fast Motor Stop ...

Page 6

Bipolar Stepping Motor Control (see Figure 4 ) (Continued) FIGURE 4. Motor Control Block Diagram Mounting Instructions The junction to ambient thermal resistance of the LM18293 can be reduced by soldering the ground pins to a suitable copper area of ...

Page 7

Mounting Instructions (Continued) FIGURE 8. Maximum Allowable Power DS008706-11 Dissipation vs Ambient Temperature 7 www.national.com ...

Page 8

... 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 LM18293N NS Package Number N16A 2. A critical component in any component of a life support ...

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