UCN5804LB Allegro Micro Systems, Inc., UCN5804LB Datasheet

UCN5804LB

Manufacturer Part Number

UCN5804LB

Description

BiMOS II unipolar sepper-motor translator/driver

Manufacturer

Allegro Micro Systems, Inc.

Datasheet

1.UCN5804LB.pdf (8 pages)

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OUTPUT

GROUND

Output Voltage, V

Output Sustaining Voltage,

Output Sink Current, I

Logic Supply Voltage, V

Input Voltage, V

Package Power Dissipation,

Operating Temperature Range,

Storage Temperature Range,

Note that the UCN5804B (dual in-line package)

and UCN5804LB (small outline IC package) are

electrically identical and share a common

terminal number assignment.

CE (sus)

......................................... See Graph

.................................. -20

................................ -55

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

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

LOGIC

............................... 50 V

OUT

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

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

C to +150

C to +85

ONE-PHASE

OUTPUT

ENABLE

DIRECTION

GROUND

STEP INPUT

HALF-STEP

SUPPLY

GROUND

Dwg. W-194

STEPPER-MOTOR TRANSLATOR/DRIVER

5804

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.

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.

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.

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.

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.

I 1.5 A Maximum Output Current

I 35 V Output Sustaining Voltage

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

I Internal Clamp Diodes

I Output Enable and Direction Control

I Power-On Reset

I Internal Thermal Shutdown Circuitry

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

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

The CMOS logic section provides the sequencing logic, DIRECTION

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

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

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

BiMOS II UNIPOLAR

Related parts for UCN5804LB

UCN5804LB Summary of contents

Page 1

... 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. I 1.5 A Maximum Output Current ...

Page 2

BiMOS II UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER IN Dwg. EP-010-5 K OUT Dwg. EP-021 SUFFIX 'LB Drive Format Two-Phase One-Phase Half-Step Step-Inhibit 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 ...

Page 3

Characteristic Output Leakage Current Output Sustaining Voltage Output Saturation Voltage Clamp Diode Leakage Current Clamp Diode Forward Voltage Input Current Input Voltage Supply Current Turn-Off Delay Turn-On Delay Thermal Shutdown Temperature CLOCK ONE PHASE HALF STEP OOUTPUT ENABLE OUTPUT A ...

Page 4

BiMOS II UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER Internal power-on reset (POR) circuitry resets OUTPUT (and OUTPUT in the two-phase A D drive format) to the on state with initial applica- tion of the logic supply voltage. After reset, the circuit then ...

Page 5

BiMOS II UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER 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 ...

Page 6

BiMOS II UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER 16 0.280 0.240 1 0.070 0.045 0.210 MAX 0.015 MIN 0.022 0.014 16 7.11 6.10 1 1.77 1.15 5.33 MAX 0.39 MIN 0.558 0.356 NOTES: 1. Exact body and lead configuration at vendor’s option ...

Page 7

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 ...

Page 8

BiMOS II UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER * 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. † ...

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