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LMD18200 Datasheet

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LMD18200
LMD18200 3A, 55V H-Bridge
Literature Number: SNVS091E
Specifications of TI (Texas Instruments) LMD18200
Approx. Price (us$):
8.51 | 1ku
Operating Supply Current(ma):
13
Operating Supply(max)(v):
55
Operating Supply(min)(v):
12
Peak Output Current(a):
3
Pin/package:
11TO

Summary of Contents

Page 1

... LMD18200 LMD18200 3A, 55V H-Bridge Literature Number: SNVS091E ...

Page 2

... H-Bridge General Description The LMD18200 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. Ideal for driving DC and stepper motors; the LMD18200 accom- modates peak output currents ...

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... Connection Diagram and Ordering Information www.national.com 11-Lead TO-220 Package Top View Order Number LMD18200T See NS Package TA11B 2 1056802 ...

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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 ...

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Electrical Characteristics Notes Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating the device beyond its rated operating conditions. Note 2: See Application Information ...

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Supply Current vs Frequency (V 42V) S Current Sense Output vs Load Current Test Circuit Temperature (V 1056820 1056822 5 Supply Current vs 42V) S 1056821 Current Sense Operating Region 1056823 1056808 www.national.com ...

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... For the LMD18200, the PWM signal drives the direction input (pin 3) and the PWM input (pin 5) is tied to logic high. 6 1056809 TABLE 1 ...

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... FIGURE 2. Locked Anti-Phase PWM Control resents zero drive. Current delivered to the load is propor- Figure 3). The (ab- tional to pulse width. For the LMD18200, the DIRECTION input (pin 3) is driven by the sign signal and the PWM input (pin 5) is driven by the magnitude signal. FIGURE 3. Sign/Magnitude PWM Control tween transitions of the Direction, Brake, and/or PWM input signals ...

Page 9

... V supply line) serves to reduce the magnitude of a current CC surge to a safe level for the LMD18200. Once the device is shut down, the control circuitry will periodically try to turn the power device back on. This feature allows the immediate re- turn to normal operation in the event that the fault condition has been removed ...

Page 10

... A major consideration when switching current through induc- tive loads is protection of the switching power devices from the large voltage transients that occur. Each of the four switches in the LMD18200 have a built-in protection diode to clamp transient voltages exceeding the positive supply or ground to a safe diode voltage drop across the switch. ...

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... TORQUE REGULATION Locked Anti-Phase Control of a brushed DC motor. Current sense output of the LMD18200 provides load sensing. The www.national.com FIGURE 7. Fixed Off-Time Control FIGURE 8. Switching Waveforms LM3524D is a general purpose PWM controller. The relation- ship of peak motor current to adjustment voltage is shown in Figure 10 ...

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FIGURE 9. Locked Anti-Phase Control Regulates Torque VELOCITY REGULATION Utilizes tachometer output from the motor to sense motor speed for a locked anti-phase control loop. The relationship 1056813 FIGURE 10. Peak Motor Current vs Adjustment Voltage of motor speed to ...

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FIGURE 11. Regulate Velocity with Tachometer Feedback www.national.com 1056815 FIGURE 12. Motor Speed vs Control Voltage 12 1056814 ...

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... Physical Dimensions inches (millimeters) unless otherwise noted 11-Lead TO-220 Power Package (T) Order Number LMD18200T NS Package Number TA11B 13 www.national.com ...

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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 ...

Page 16

... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...

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