LMD18201T/NOPB National Semiconductor, LMD18201T/NOPB Datasheet

IC H BRIDGE 3A 55V TO220-11

LMD18201T/NOPB

Manufacturer Part Number
LMD18201T/NOPB
Description
IC H BRIDGE 3A 55V TO220-11
Manufacturer
National Semiconductor
Datasheets

Specifications of LMD18201T/NOPB

Applications
DC Motor Driver, Stepper Motor Driver, H Bridge
Number Of Outputs
1
Current - Output
3A
Voltage - Supply
12 V ~ 55 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-11 (Bent and Staggered Leads)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Load
-
Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device
Other names
*LMD18201T
*LMD18201T/NOPB
LMD18201T
© 2011 National Semiconductor Corporation
3A, 55V H-Bridge
General Description
The LMD18201 is a 3A H-Bridge designed for motion control
applications. The device is built using a multi-technology pro-
cess which combines bipolar and CMOS control circuitry with
DMOS power devices on the same monolithic structure. The
H-Bridge configuration is ideal for driving DC and stepper
motors. The LMD18201 accommodates peak output currents
up to 6A. Current sensing can be achieved via a small sense
resistor connected in series with the power ground lead. For
current sensing without disturbing the path of current to the
load, the LMD18200 is recommended.
Features
Functional Diagram
Delivers up to 3A continuous output
Operates at supply voltages up to 55V
Low R
DS(ON)
typically 0.33Ω per switch at 3A
FIGURE 1. Functional Block Diagram of LMD18201
10793
LMD18201
Applications
TTL and CMOS compatible inputs
No “shoot-through” current
Thermal warning flag output at 145°C
Thermal shutdown (outputs off) at 170°C
Internal clamp diodes
Shorted load protection
Internal charge pump with external bootstrap capability
DC and stepper motor drives
Position and velocity servomechanisms
Factory automation robots
Numerically controlled machinery
Computer printers and plotters
1079301
February 3, 2011
www.national.com

Related parts for LMD18201T/NOPB

LMD18201T/NOPB Summary of contents

Page 1

... Delivers continuous output ■ Operates at supply voltages up to 55V ■ Low R typically 0.33Ω per switch at 3A DS(ON) Functional Diagram © 2011 National Semiconductor Corporation LMD18201 ■ TTL and CMOS compatible inputs ■ No “shoot-through” current ■ Thermal warning flag output at 145°C ■ ...

Page 2

Connection Diagram and Ordering Information www.national.com Top View Order Number LMD18201T See NS Package Number TA11B 2 1079302 ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Total Supply Voltage (V , Pin 6) S Voltage at Pins and 9 Voltage at Bootstrap Pins (Pins 1 and 11) Peak Output Current (200 ms) Continuous Output Current (Note ...

Page 4

Typical Performance Characteristics V vs Flag Current SAT R vs DS(ON) Supply Voltage Supply Current vs Frequency (V S www.national.com 1079312 1079314 = 42V) 1079316 Temperature DS(ON) 1079313 Supply Current vs Supply Voltage 1079315 Supply Current vs ...

Page 5

Test Circuit Switching Time Definitions Pinout Descriptions (See Connection Diagram) Pin 1, BOOTSTRAP 1 Input: Bootstrap capacitor pin for half H-Bridge number 1. The recommended capacitor (10 nF) is connected between pins 1 and 2. Pin 2, OUTPUT 1: Half ...

Page 6

Sign/magnitude PWM consists of separate direction (sign) and amplitude (magnitude) signals (see solute) magnitude signal is duty-cycle modulated, and the absence of a pulse signal (a continuous logic low level) rep- www.national.com FIGURE 2. Locked Anti-Phase PWM Control resents zero ...

Page 7

FIGURE 4. Transitions in Brake, Direction, or PWM Must be Separated by At Least 1 μsec SIGNAL TRANSITION REQUIREMENTS To ensure proper internal logic performance good prac- tice to avoid aligning the falling and rising edges of input ...

Page 8

V thereby providing a gate drive voltage greater than V S This switching action is controlled by a continuously running ...

Page 9

CURRENT SENSING In many motor control applications it is desirable to sense and control the current through the motor. For these types of ap- plications a companion product, the LMD18200, is also avail- able. The LMD18200 is identical to the ...

Page 10

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 11-Lead TO-220 Power Package (T) Order Number LMD18201T NS Package Number TA11B 10 ...

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Notes 11 www.national.com ...

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