UCN5804LB_技术文档

5804

BiMOS II UNIPOLAR

STEPPER-MOTOR TRANSLATOR/DRIVER

Combining low-power CMOS logic with high-current and high-voltage

bipolar outputs, the UCN5804B and UCN5804LB BiMOS II translator/

drivers provide complete control and drive for a four-phase unipolar stepper-

motor with continuous output current ratings to 1.25 A per phase (1.5 A

startup) and 35 V.

1

V_DD

OE

OUTPUT _B

16

SUPPLY

OUTPUT

ENABLE

K_BD

2

3

15

14

The CMOS logic section provides the sequencing logic, DIRECTION

and OUTPUT ENABLE control, and a power-on reset function. Three

stepper-motor drive formats, wave-drive (one-phase), two-phase, and half-

step are externally selectable. The inputs are compatible with standard

CMOS, PMOS, and NMOS circuits. TTL or LSTTL may require the use of

appropriate pull-up resistors to ensure a proper input-logic high.

OUTPUT _D

DIRECTION

GROUND

4

5

13

12

GROUND

LOGIC

OUTPUT _C

K_AC

STEP INPUT

11

6

7

8

The wave-drive format consists of energizing one motor phase at a time

in an A-B-C-D (or D-C-B-A) sequence. This excitation mode consumes the

least power and assures positional accuracy regardless of any winding

inbalance in the motor. Two-phase drive energizes two adjacent phases in

each detent position (AB-BC-CD-DA). This sequence mode offers an

improved torque-speed product, greater detent torque, and is less susceptible

to motor resonance. Half-step excitation alternates between the one-phase

and two-phase modes (A-AB-B-BC-C-CD-D-DA), providing an eight-step

sequence.

10 HALF-STEP

9

OUTPUT_A

ONE-PHASE

Dwg. W-194

Note that the UCN5804B (dual in-line package)

and UCN5804LB (small outline IC package) are

electrically identical and share a common

terminal number assignment.

The bipolar outputs are capable of sinking up to 1.5 A and withstanding

50 V in the off state (sustaining voltages up to 35 V). Ground-clamp and

flyback diodes provide protection against inductive transients. Thermal

protection circuitry disables the outputs when the chip temperature is exces-

sive.

Both devices are rated for operation over the temperature range of -20°C

to +85°C. The UCN5804B is supplied in a 16-pin dual in-line plastic batwing

package with a copper lead frame and heat-sinkable tabs for improved power

dissipation capabilities; the UCN5804LB is supplied in a 16-lead plastic

SOIC batwing package with a copper lead frame and heat-sinkable tabs.

ABSOLUTE MAXIMUM RATINGS

Output Voltage, V_CE...............................50 V

Output Sustaining Voltage,

FEATURES

V_{CE (sus)}............................................35 V

Output Sink Current, I_OUT.................... 1.5 A

Logic Supply Voltage, V_DD....................7.0 V

Input Voltage, V_IN..................................7.0 V

Package Power Dissipation,

ꢀ 1.5 A Maximum Output Current

ꢀ 35 V Output Sustaining Voltage

ꢀ Wave-Drive, Two-Phase, and Half-Step Drive Formats

ꢀ Internal Clamp Diodes

ꢀ Output Enable and Direction Control

ꢀ Power-On Reset

P_D......................................... See Graph

Operating Temperature Range,

ꢀ Internal Thermal Shutdown Circuitry

T_A.................................. -20°C to +85°C

Storage Temperature Range,

T_S................................ -55°C to +150°C

Always order by complete part number, e.g., UCN5804B .

5804

BiMOS II UNIPOLAR

STEPPER-MOTOR

TRANSLATOR/DRIVER

5

4

3

TYPICAL INPUT CIRCUIT

R

= 6.0°C/W

θJT

V

DD

IN

SUFFIX 'B', R

= 43°C/W

θJA

2

1

0

Dwg. EP-010-5

SUFFIX 'LB', R

50

= 63°C/W

θJA

TYPICAL OUTPUT DRIVER

25

75

100

125

150

TEMPERATURE IN °C

Dwg. GP-049-2A

K

OUT

TRUTH TABLE

Dwg. EP-021-4

Drive Format

Pin 9

Pin 10

Two-Phase

One-Phase

Half-Step

L

H

L

H

Step-Inhibit

H

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

5804

BiMOS II UNIPOLAR

STEPPER-MOTOR

TRANSLATOR/DRIVER

ELECTRICAL CHARACTERISTICS at T = 25°C, T ≤ 150°C, V = 4.5 V to 5.5 V

A

J

DD

(unless otherwise noted).

Limits

Characteristic

Symbol

Test Conditions

Min.

—

Typ.

Max.

Units

µA

V

Output Leakage Current

Output Sustaining Voltage

Output Saturation Voltage

I

V

= 50 V

10

50

CEX

OUT

V

I

= 1.25 A, L = 3 mH

= 700 mA

= 1 A

35

—

CE(sus)

OUT

V

1.0

1.1

1.2

10

1.2

1.4

1.5

50

V

CE(SAT)

—

V

= 1.25 A

—

V

Clamp Diode Leakage Current

Clamp Diode Forward Voltage

Input Current

I

V = 50 V

—

µA

V

R

V

I = 1.25 A

—

1.5

0.5

-0.5

—

3.0

5.0

-5.0

5.3

0.8

30

F

I

V

= V

DD

—

µA

V

IN(1)

IN(0)

IN

= 0.8 V

—

IN

Input Voltage

V

= 5 V

3.5

-0.3

—

IN(1)

IN(0)

DD

V

—

V

Supply Current

I

2 Outputs ON

20

mA

µs

°C

DD

Turn-Off Delay

t

50% Step Inputs to 50% Output

—

10

ON

Turn-On Delay

t

—

10

OFF

Thermal Shutdown Temperature

T

—

165

—

J

TIMING CONDITIONS

CLOCK

C

ONE PHASE

HALF STEP

A

B

OOUTPUT ENABLE

OUTPUT A

OUTPUT B

OUTPUT C

OUTPUT D

OUTPUT

TWO -PHASE

HALF-STEP

WAVE DRIVE

DISABLED

Dwg. W-110A

A. Minimum Data Set Up Time . . . . . . . . . . . . . . . . . . . . . . . . 100 ns

B. Minimum Data Hold Time . . . . . . . . . . . . . . . . . . . . . . . . . . 100 ns

C. Minimum Step Input Pulse Width . . . . . . . . . . . . . . . . . . . . . 3.0 µs

www.allegromicro.com

5804

BiMOS II UNIPOLAR

STEPPER-MOTOR

TRANSLATOR/DRIVER

WAVE-DRIVE SEQUENCE

APPLICATIONS INFORMATION

Half Step = L, One Phase = H

Internal power-on reset (POR) circuitry resets

OUTPUT_A(and OUTPUT_Din the two-phase

drive format) to the on state with initial applica-

tion of the logic supply voltage. After reset, the

circuit then steps according to the tables.

Step

A

B

C

D

POR

ON

OFF

ON

OFF

ON

OFF

ON

1

2

3

4

The outputs will advance one sequence

position on the high-to-low transition of the STEP

INPUT pulse. Logic levels on the HALF-STEP

and ONE-PHASE inputs will determine the drive

format (one-phase, two-phase, or half-step). The

DIRECTION pin determines the rotation se-

quence of the outputs. Note that the STEP

INPUT must be in the low state when changing

the state of ONE-PHASE, HALF-STEP, or

DIRECTION to prevent erroneous stepping.

OFF

TWO-PHASE DRIVE SEQUENCE

Half Step = L, One Phase = L

Step

A

B

C

D

POR

ON

OFF

ON

OFF

ON

OFF

ON

1

2

3

4

All outputs are disabled (off) when OUTPUT

ENABLE is at a logic high. If the function is not

required, OUTPUT ENABLE should be tied low.

In that condition, all outputs depend only on the

state of the step logic.

ON

During normal commutation of a unipolar

stepper motor, mutual coupling between the

motor windings can force the outputs of the

UCN5804B below ground. This condition will

cause forward biasing of the collector-to-substrate

junction and source current from the output. For

many L/R applications, this substrate current is

high enough to adversely affect the logic circuitry

and cause misstepping. External series diodes

(Schottky are recommended for increased

efficiency at low-voltage operation) will prevent

substrate current from being sourced through the

outputs. Alternatively, external ground clamp

diodes will provide a preferred current path from

ground when the outputs are pulled below ground.

HALF-STEP DRIVE SEQUENCE

Half Step = H, One Phase = L

Step

A

B

C

D

POR

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

1

2

3

4

5

6

7

8

ON

Internal thermal protection circuitry disables

all outputs when the junction temperature reaches

approximately 165°C. The outputs are enabled

again when the junction cools down to approxi-

mately 145°C.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

5804

BiMOS II UNIPOLAR

STEPPER-MOTOR

TRANSLATOR/DRIVER

TYPICAL APPLICATION

L/R Stepper-Motor Drive

The products described here are manufactured under one or more

U.S. patents or U.S. patents pending.

Allegro MicroSystems, Inc. reserves the right to make, from time to

time, such departures from the detail specifications as may be

required to permit improvements in the performance, reliability, or

manufacturability of its products. Before placing an order, the user is

cautioned to verify that the information being relied upon is current.

Allegro products are not authorized for use as critical components

in life-support devices or systems without express written approval.

The information included herein is believed to be accurate and

reliable. However, Allegro MicroSystems, Inc. assumes no responsi-

bility for its use; nor for any infringement of patents or other rights of

third parties which may result from its use.

www.allegromicro.com

5804

BiMOS II UNIPOLAR

STEPPER-MOTOR

TRANSLATOR/DRIVER

UCN5804B

Dimensions in Inches

(controlling dimensions)

0.020

0.008

NOTE 4

9

16

0.430

MAX

0.280

0.240

0.300

BSC

1

8

0.100

BSC

0.070

0.005

MIN

0.045

0.775

0.735

0.210

MAX

0.015

MIN

0.150

0.115

0.022

0.014

Dwg. MA-001-17A in

Dimensions in Millimeters

(for reference only)

0.508

0.204

NOTE 4

9

16

10.92

MAX

7.11

6.10

7.62

BSC

1

8

2.54

BSC

1.77

0.13

MIN

1.15

19.68

18.67

5.33

MAX

0.39

MIN

3.81

2.93

0.558

0.356

Dwg. MA-001-17A mm

NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown.

2. Lead spacing tolerance is non-cumulative.

3. Lead thickness is measured at seating plane or below.

4. Webbed lead frame. Leads 4, 5, 12, and 13 are internally one piece.

5. Supplied in standard sticks/tubes of 25 devices.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

5804

BiMOS II UNIPOLAR

STEPPER-MOTOR

TRANSLATOR/DRIVER

UCN5804LB

(add “TR” to part number for tape and reel)

Dimensions in Inches

(for reference only)

16

9

0.0125

0.0091

0.419

0.394

0.2992

0.2914

0.050

0.016

0.020

0.013

1

2

0.050

3

BSC

0° TO 8°

0.4133

0.3977

0.0926

0.1043

Dwg. MA-008-17A in

0.0040 MIN.

Dimensions in Millimeters

(controlling dimensions)

16

9

0.32

0.23

10.65

10.00

7.60

7.40

1.27

0.40

0.51

0.33

1

2

1.27

3

BSC

0° TO 8°

10.50

10.10

2.65

2.35

Dwg. MA-008-17A mm

0.10 MIN.

NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown.

2. Lead spacing tolerance is non-cumulative.

3. Lead thickness is measured at seating plane or below.

4. Webbed lead frame. Leads 4, 5, 12, and 13 are internally one piece.

5. Supplied in standard sticks/tubes of 47 devices or add “TR” to part number for tape and reel.

www.allegromicro.com

5804

BiMOS II UNIPOLAR

STEPPER-MOTOR

TRANSLATOR/DRIVER

MOTOR DRIVERS

Function

Output Ratings*

Part Number^†

INTEGRATED CIRCUITS FOR BRUSHLESS DC MOTORS

3-Phase Power MOSFET Controller

2-Phase Hall-Effect Sensor/Driver

Bidirectional 3-Phase Back-EMF Controller/Driver

2-Phase Hall-Effect Sensor/Driver

3-Phase Back-EMF Controller/Driver

3-Phase Controller/Drivers

—

28 V

50 V

26 V

14 V

45 V

3933

3932

7600

3626

8906

3625

8902–A

2936 & 2936-120

400 mA

600 mA

900 mA

2.0 A

INTEGRATED BRIDGE DRIVERS FOR DC AND BIPOLAR STEPPER MOTORS

Dual Full Bridge with Protection & Diagnostics

PWM Current-Controlled Dual Full Bridge

PWM Current-Controlled Full Bridge

PWM Current-Controlled Dual Full Bridge

PWM Current-Controlled Microstepping Full Bridge

PWM Current-Controlled Dual DMOS Full Bridge

Dual Full-Bridge Driver

500 mA

650 mA

750 mA

800 mA

1.3 A

1.5 A

30 V

45 V

33 V

50 V

45 V

50 V

3976

3966

3968

2916

2919

6219

3964

3953

2917

3955

3957

3972

2998

3952

3958

3971

2.0 A

2.5 A

PWM Current-Controlled Full Bridge

DMOS Full Bridge PWM Driver

Dual DMOS Full Bridge

UNIPOLAR STEPPER MOTOR & OTHER DRIVERS

Voice-Coil Motor Driver

500 mA

800 mA

1 A

1.2 A

1.25 A

1.8 A

3 A

6 V

16 V

46 V

50 V

46 V

8932–A

8958

7024 & 7029

7042

5804

2540

Unipolar Stepper-Motor Quad Drivers

Unipolar Microstepper-Motor Quad Driver

Unipolar Stepper-Motor Translator/Driver

Unipolar Stepper-Motor Quad Driver

Unipolar Microstepper-Motor Quad Driver

2544

7026

3 A

7044

* Current is maximum specified test condition, voltage is maximum rating. See specification for sustaining voltage limits

or over-current protection voltage limits. Negative current is defined as coming out of (sourcing) the output.

† Complete part number includes additional characters to indicate operating temperature range and package style.

Also, see 3175, 3177, 3235, and 3275 Hall-effect sensors for use with brushless dc motors.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000


型号：	UCN5804LB
厂家：	ALLEGRO MICROSYSTEMS
描述：	BiMOS II UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER 采用BiMOS II单极步进电机译者/驱动器驱动器运动控制电子器件信号电路光电二极管电动机控制电机
文件：	总8页 (文件大小：155K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UCN5804LB [ALLEGRO]

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