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元器件相关资料电机.rar （33个子文件）

电机

H桥工作原理.doc 313KB

直流电机.pdf 48KB

l297

中文来97.pdf 150KB

步进电机资料

步进电机C

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TEMP.LST 139B

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ULN2003A.pdf 269KB

步进电机控制接口实例

步进电机控制接口实例.pdf 92KB

ULN2003中文.rar 27KB

l293

41496_TI_L293.pdf 492KB

9457_TI_L293D.pdf 490KB

步进电机控制接口实例.rar 87KB

l297.rar 139KB

 

  

SLRS008C − SEPTEMBER 1986 − REVISED NOVEMBER 2004

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Featuring Unitrode L293 and L293D

Products Now From Texas Instruments

D Wide Supply-Voltage Range: 4.5 V to 36 V

D Separate Input-Logic Supply

D Internal ESD Protection

D Thermal Shutdown

D High-Noise-Immunity Inputs

D Functionally Similar to SGS L293 and

SGS L293D

D Output Current 1 A Per Channel

(600 mA for L293D)

D Peak Output Current 2 A Per Channel

(1.2 A for L293D)

D Output Clamp Diodes for Inductive

Transient Suppression (L293D)

description/ordering information

The L293 and L293D are quadruple high-current

half-H drivers. The L293 is designed to provide

bidirectional drive currents of up to 1 A at voltages

from 4.5 V to 36 V. The L293D is designed to

provide bidirectional drive currents of up to

600-mA at voltages from 4.5 V to 36 V. Both

devices are designed to drive inductive loads such

as relays, solenoids, dc and bipolar stepping

motors, as well as other high-current/high-voltage

loads in positive-supply applications.

All inputs are TTL compatible. Each output is a

complete totem-pole drive circuit, with a

Darlington transistor sink and a pseudo-

Darlington source. Drivers are enabled in pairs, with drivers 1 and 2 enabled by 1,2EN and drivers 3 and 4

enabled by 3,4EN. When an enable input is high, the associated drivers are enabled, and their outputs are active

and in phase with their inputs. When the enable input is low, those drivers are disabled, and their outputs are

off and in the high-impedance state. With the proper data inputs, each pair of drivers forms a full-H (or bridge)

reversible drive suitable for solenoid or motor applications.

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

HSOP (DWP) Tube of 20 L293DWP L293DWP

0°C to 70°C

PDIP (N) Tube of 25 L293N L293N

C to 70

PDIP (NE)

Tube of 25 L293NE L293NE

PDIP (NE)

Tube of 25 L293DNE L293DNE

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

HEAT SINK AND

GROUND

HEAT SINK AND

GROUND

1,2EN

CC2

CC1

3,4EN

L293 ...N OR NE PACKAGE

L293D . . . NE PACKAGE

(TOP VIEW)

1,2EN

CC2

CC1

3,4EN

L293 . . . DWP PACKAGE

(TOP VIEW)

HEAT SINK AND

GROUND

HEAT SINK AND

GROUND

 

  

SLRS008C − SEPTEMBER 1986 − REVISED NOVEMBER 2004

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

description/ordering information (continued)

On the L293, external high-speed output clamp diodes should be used for inductive transient suppression.

A V

CC1

terminal, separate from V

CC2

, is provided for the logic inputs to minimize device power dissipation.

The L293and L293D are characterized for operation from 0°C to 70°C.

block diagram

CC2

CC1

NOTE: Output diodes are internal in L293D.

FUNCTION TABLE

(each driver)

INPUTS

†

OUTPUT

A EN

OUTPUT

H H H

L HL

X L Z

H = high level, L = low level, X = irrelevant,

Z = high impedance (off)

†

In the thermal shutdown mode, the output is

in the high-impedance state, regardless of

the input levels.

 

  

SLRS008C − SEPTEMBER 1986 − REVISED NOVEMBER 2004

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

logic diagram

ÁÁ

1,2EN

3,4EN

schematics of inputs and outputs (L293)

Input

CC2

Output

GND

TYPICAL OF ALL OUTPUTS

EQUIVALENT OF EACH INPUT

CC1

Current

Source

GND

 

  

SLRS008C − SEPTEMBER 1986 − REVISED NOVEMBER 2004

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

schematics of inputs and outputs (L293D)

Input

CC2

Output

GND

TYPICAL OF ALL OUTPUTS

EQUIVALENT OF EACH INPUT

CC1

Current

Source

GND

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

†

Supply voltage, V

CC1

(see Note 1) 36 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output supply voltage, V

CC2

36 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage, V

7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output voltage range, V

−3 V to V

CC2

+ 3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Peak output current, I

(nonrepetitive, t ≤ 5 ms): L293 ±2 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Peak output current, I

(nonrepetitive, t ≤ 100 µs): L293D ±1.2 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous output current, I

: L293 ±1 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous output current, I

: L293D ±600 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance, θ

(see Notes 2 and 3): DWP package TBD°C/W. . . . . . . . . . . . . . . . . . . . . . .

N package 67°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . .

NE package TBD°C/W. . . . . . . . . . . . . . . . . . . . . . . . .

Maximum junction temperature, T

150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, T

stg

−65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES: 1. All voltage values are with respect to the network ground terminal.

2. Maximum power dissipation is a function of T

(max), q

, and T

. The maximum allowable power dissipation at any allowable

ambient temperature is P

= (T

(max) − T

)/q

. Operating at the absolute maximum T

of 150°C can affect reliability.

3. The package thermal impedance is calculated in accordance with JESD 51-7.

 

  

SLRS008C − SEPTEMBER 1986 − REVISED NOVEMBER 2004

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

recommended operating conditions

MIN MAX UNIT

Supply voltage

CC1

4.5 7

Supply voltage

CC2

CC1

High-level input voltage

CC1

≤ 7 V 2.3 V

CC1

High-level input voltage

CC1

≥ 7 V

2.3 7 V

Low-level output voltage −0.3

†

1.5 V

Operating free-air temperature 0 70 °C

†

The algebraic convention, in which the least positive (most negative) designated minimum, is used in this data sheet for logic voltage levels.

electrical characteristics, V

CC1

= 5 V, V

CC2

= 24 V, T

= 25°C

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

High-level output voltage

L293: I

= −1 A

L293D: I

= −0.6 A

CC2

− 1.8 V

CC2

− 1.4 V

Low-level output voltage

L293: I

= 1 A

L293D: I

= 0.6 A

1.2 1.8 V

OKH

High-level output clamp voltage L293D: I

= −0.6 A V

CC2

+ 1.3 V

OKL

Low-level output clamp voltage L293D: I

= 0.6 A 1.3 V

High-level input current

= 7 V

0.2 100

High-level input current

= 7 V

0.2 10

µA

Low-level input current

= 0

−3 −10

Low-level input current

= 0

−2 −100

µA

All outputs at high level 13 22

CC1

Logic supply current I

= 0

All outputs at low level 35 60

CC1

Logic supply current

= 0

All outputs at high impedance 8 24

All outputs at high level 14 24

CC2

Output supply current I

= 0

All outputs at low level 2 6

CC2

Output supply current

= 0

All outputs at high impedance 2 4

switching characteristics, V

CC1

= 5 V, V

CC2

= 24 V, T

= 25°C

PARAMETER

TEST CONDITIONS

L293NE, L293DNE

UNIT

PARAMETER

TEST CONDITIONS

MIN TYP MAX

UNIT

PLH

Propagation delay time, low-to-high-level output from A input 800 ns

PHL

Propagation delay time, high-to-low-level output from A input

= 30 pF, See Figure 1

400 ns

TLH

Transition time, low-to-high-level output

= 30 pF, See Figure 1

300 ns

THL

Transition time, high-to-low-level output 300 ns

switching characteristics, V

CC1

= 5 V, V

CC2

= 24 V, T

= 25°C

PARAMETER

TEST CONDITIONS

L293DWP, L293N

L293DN

UNIT

PARAMETER

TEST CONDITIONS

MIN TYP MAX

UNIT

PLH

Propagation delay time, low-to-high-level output from A input 750 ns

PHL

Propagation delay time, high-to-low-level output from A input

= 30 pF, See Figure 1

200 ns

TLH

Transition time, low-to-high-level output

= 30 pF, See Figure 1

100 ns

THL

Transition time, high-to-low-level output 350 ns

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