Datasheets»National Semiconductor (acquired by TI (Texas Instruments))»LMD18201T Datasheet

LMD18201T Datasheet

Download or read online National Semiconductor LMD18201T IC, MOTOR CTRL, HALF BRIDGE 3A TO-220-11 pdf datasheet.
Also see for LMD18201T: Datasheet #2 (10 pages)



Page
1 of 12
next
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
Delivers up to 3A continuous output
Operates at supply voltages up to 55V
Low R
typically 0.33Ω per switch at 3A
DS(ON)
Functional Diagram
FIGURE 1. Functional Block Diagram of LMD18201
© 2011 National Semiconductor Corporation
LMD18201
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
Applications
DC and stepper motor drives
Position and velocity servomechanisms
Factory automation robots
Numerically controlled machinery
Computer printers and plotters
10793
February 3, 2011
1079301
www.national.com
Specifications of National Semiconductor LMD18201T
Driver Case Style:
TO-220
Motor Type:
Half Bridge
No. Of Outputs:
2
No. Of Pins:
11
Operating Temperature Range:
-40°C To +125°C
Output Current:
3A
Supply Voltage Range:
12V To 55V

Summary of Contents

Page 1

... Operates at supply voltages up to 55V Low R typically 0.33Ω per switch at 3A DS(ON) Functional Diagram FIGURE 1. Functional Block Diagram of LMD18201 © 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 ...

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 ...

Page 11

Notes 11 www.national.com ...

Page 12

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

Comments to this Datasheet