Allegro UCN5804LB, UCN5804B Datasheet

OUTPUT

OUTPUT

GROUND

GROUND

OUTPUT

OUTPUT

Note that the UCN5804B (dual in-line package)
and UCN5804LB (small outline IC package) are
electrically identical and share a common
terminal number assignment.

1

B

K

2

BD

3

D

4

5

6

C

7

K

AC

8

A

LOGIC

V

OE

16

15

14

13

12

11

10

9

SUPPLY

OUTPUT
ENABLE

DIRECTION

GROUND

GROUND

STEP INPUT

HALF-STEP

ONE-PHASE

Dwg. W-194

DD

26184.12C*

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 stepper­motor with continuous output current ratings to 1.25 A per phase (1.5 A
startup) and 35 V.

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 half­step 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.

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.

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 exces­sive.

Data Sheet

ABSOLUTE MAXIMUM RATINGS

Output Voltage, VCE............................... 50 V

Output Sustaining Voltage,

V

Output Sink Current, I

Logic Supply Voltage, V

Input Voltage, V

Package Power Dissipation,

PD......................................... See Graph

Operating Temperature Range,

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

Storage Temperature Range,

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

............................................ 35 V

CE (sus)

.................... 1.5 A

OUT

.................... 7.0 V

DD

.................................. 7.0 V

IN

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.

FEATURES

■ 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

■ Internal Thermal Shutdown Circuitry

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

5804

BiMOS II UNIPOLAR
STEPPER-MOTOR
TRANSLATOR/DRIVER

TYPICAL INPUT CIRCUIT

V

DD

5

R = 6.0°C/W

θJT

4

IN

Dwg. EP-010-5

TYPICAL OUTPUT DRIVER

K

OUT

3

SUFFIX 'B', R = 43°C/W

θJA

2

1

SUFFIX 'LB', R = 63°C/W

θJA

0

25

ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS

50 75 100 125 150

TEMPERATURE IN °C

Dwg. GP-049-2A

Dwg. EP-021-4

TRUTH TABLE

Drive Format Pin 9 Pin 10

Two-Phase L L
One-Phase H L
Half-Step L H
Step-Inhibit H H

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
Copyright © 1987, 2000 Allegro MicroSystems, Inc.

5804

BiMOS II UNIPOLAR

STEPPER-MOTOR

TRANSLATOR/DRIVER

ELECTRICAL CHARACTERISTICS at TA = 25°C, TJ ≤ 150°C, VDD = 4.5 V to 5.5 V
(unless otherwise noted).

Limits

Characteristic Symbol Test Conditions Min. Typ. Max. Units

Output Leakage Current I

Output Sustaining Voltage V

Output Saturation Voltage V

CE(sus)

CE(SAT)

Clamp Diode Leakage Current I

Clamp Diode Forward Voltage V

Input Current I

I

Input Voltage V

V

Supply Current I

Turn-Off Delay t

Turn-On Delay t

Thermal Shutdown Temperature T

CEX

R

F

IN(1)

IN(0)

IN(1)

IN(0)

DD

ON

OFF

J

V

= 50 V — 10 50 µA

OUT

I

= 1.25 A, L = 3 mH 35 — — V

OUT

I

= 700 mA — 1.0 1.2 V

OUT

I

= 1 A — 1.1 1.4 V

OUT

I

= 1.25 A — 1.2 1.5 V

OUT

VR = 50 V — 10 50 µA

IF = 1.25 A — 1.5 3.0 V

VIN = V

DD

—0.55.0 µA

VIN = 0.8 V — -0.5 -5.0 µA

V

= 5 V 3.5 — 5.3 V

DD

-0.3 — 0.8 V

2 Outputs ON — 20 30 mA

50% Step Inputs to 50% Output — — 10 µs

50% Step Inputs to 50% Output — — 10 µs

— 165 — °C

CLOCK

ONE PHASE

HALF STEP

OOUTPUT ENABLE

OUTPUT A
OUTPUT B

OUTPUT C

OUTPUT D

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

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

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

TIMING CONDITIONS

C

A

TWO -PHASE HALF-STEP WAVE DRIVE

B

OUTPUT
DISABLED

µs

Dwg. W-110A

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