Combining low-power CMOS logic with high-current highvoltage bipolar o
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BiMOS UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER
Combining low-power CMOS logic with high-current highvoltage bipolar outputs, UCN5804B UCN5804LB BiMOS translator/drivers provide complete control drive four-phase unipolar stepper-motor with continuous output current ratings 1.25 phase (1.5 startup) CMOS logic section provides sequencing logic, DIRECTION OUTPUT ENABLE control, power-ON reset function. Three stepper-motor drive formats, wave-drive (one-phase), twophase, half-step externally selectable. inputs compatible with standard CMOS, PMOS, NMOS circuits. LSTTL require appropriate pull-up resistors ensure proper input-logic high. wave-drive format consists energizing motor phase time A-B-C-D D-C-B-A) sequence. This excitation mode consumes least power assures positional accuracy regardless winding inbalance motor. Two-phase drive energizes adjacent phases each detent position (AB-BC-CD-DA). This sequence mode offers improved torque-speed product, greater detent torque, less susceptible motor resonance. Half-step excitation alternates between one-phase two-phase modes (A-AB-B-BC-C-CD-D-DA), providing eight-step sequence. bipolar outputs capable sinking withstanding state (sustaining voltages Ground-clamp flyback diodes provide protection against inductive transients. Thermal protection circuitry disables outputs when chip temperature excessive.
Data Sheet 26184.12B
BiMOS UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER
OUTPUT LOGIC GROUND OUTPUT GROUND STEP INPUT HALF-STEP ONE-PHASE
SUPPLY OUTPUT ENABLE DIRECTION GROUND
OUTPUT GROUND
OUTPUT
Dwg. W-194
Note that UCN5804B (dual in-line package) UCN5804LB (small outline package) electrically identical share common number assignment.
ABSOLUTE MAXIMUM RATINGS
Output Voltage, Output Sustaining Voltage, (sus) Output Sink Current, IOUT Logic Supply Voltage, Input Voltage, Package Power Dissipation, Graph Operating Temperature Range, -20°C +85°C Storage Temperature Range, -55°C +150°C
Both devices rated operation over temperature range -20°C +85°C. UCN5804B supplied 16-pin dual in-line plastic batwing package with copper lead frame heat-sinkable tabs improved power dissipation capabilities; UCN5804LB supplied 16-lead plastic SOIC batwing package with copper lead frame heat-sinkable tabs.
FEATURES
Maximum Output Current Output Sustaining Voltage Wave-Drive, Two-Phase, Half-Step Drive Formats Internal Clamp Diodes Output Enable Direction Control Power-ON Reset Internal Thermal Shutdown Circuitry
Always order complete part number, e.g., UCN5804B
BiMOS UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER
6.0°C/W
TYPICAL INPUT CIRCUIT
ALLOWABLE PACKAGE POWER DISSIPATION WATTS
SUFFIX 'B', 43°C/W
Dwg. EP-010-5
SUFFIX 'LB', 67°C/W
TYPICAL OUTPUT DRIVER
TEMPERATURE
Dwg. GP-049-2
TRUTH TABLE
Dwg. EP-021-4
Drive Format Two-Phase One-Phase Half-Step Step-Inhibit
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright 1987, 1997, Allegro MicroSystems, Inc.
BiMOS UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER
ELECTRICAL CHARACTERISTICS 25°C, 150°C, (unless otherwise noted).
Characteristic Output Leakage Current Output Sustaining Voltage Output Saturation Voltage Symbol ICEX VCE(sus) VCE(SAT) Test Conditions VOUT IOUT 1.25 IOUT IOUT IOUT 1.25 Clamp Diode Leakage Current Clamp Diode Forward Voltage Input Current IIN(1) IIN(0) Input Voltage VIN(1) VIN(0) Supply Current Turn-Off Delay Turn-On Delay Thermal Shutdown Temperature tOFF Outputs Step Inputs Output Step Inputs Output 1.25 Min. -0.3 Limits Typ. Max. -0.5 -5.0 Units
TIMING CONDITIONS
CLOCK PHASE HALF STEP OOUTPUT ENABLE OUTPUT OUTPUT OUTPUT OUTPUT -PHASE HALF-STEP OUTPUT WAVE DRIVE DISABLED
Dwg. W-110A
Minimum Data Time Minimum Data Hold Time Minimum Step Input Pulse Width
BiMOS UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER
APPLICATIONS INFORMATION
Internal power-ON reset (POR) circuitry resets OUTPUTA (and OUTPUTD twophase drive format) state with initial application logic supply voltage. After reset, circuit then steps according tables. outputs will advance sequence position high-to-low transition STEP INPUT pulse. Logic levels HALF-STEP ONE-PHASE inputs will determine drive format (one-phase, twophase, half-step). DIRECTION determines rotation sequence outputs. Note that STEP INPUT must state when changing state ONE-PHASE, HALF-STEP, DIRECTION prevent erroneous stepping. outputs disabled (OFF) when OUTPUT ENABLE logic high. function required, OUTPUT ENABLE should tied low. that condition, outputs depend only state step logic. During normal commutation unipolar stepper motor, mutual coupling between motor windings force outputs UCN5804B below ground. This condition will cause forward biasing collector-tosubstrate junction source current from output. many applications, this substrate current high enough adversely affect logic circuitry cause misstepping. External series diodes (Schottky recommended increased efficiency lowvoltage operation) will prevent substrate current from being sourced through outputs. Alternatively, external ground clamp diodes will provide preferred current path from ground when outputs pulled below ground. Internal thermal protection circuitry disables outputs when junction temperature reaches approximately 165°C. outputs enabled again when junction cools down approximately 145°C.
Step
WAVE-DRIVE SEQUENCE
Half Step Phase
TWO-PHASE DRIVE SEQUENCE
Half Step Phase Step
HALF-STEP DRIVE SEQUENCE
Half Step Phase Step
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
BiMOS UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER
TYPICAL APPLICATION Stepper-Motor Drive
LOGIC
DIRECTION CONTROL
STEP INPUT
LOGIC
Dwg. EP-0
BiMOS UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER
UCN5804B
Dimensions Inches (controlling dimensions)
0.020 0.008
NOTE
0.430 0.280 0.240
0.300
0.070 0.045
0.100 0.775 0.735
0.005
0.210
0.015
0.150 0.115 0.022 0.014
Dwg. MA-001-17A
Dimensions Millimeters
NOTE
0.508 0.204
10.92 7.11 6.10
7.62
1.77 1.15
2.54 19.68 18.67
0.13
5.33
0.39
3.81 2.93 0.558 0.356
Dwg. MA-001-17A
NOTES:
Exact body lead configuration vendor's option within limits shown. Lead spacing tolerance non-cumulative Lead thickness measured seating plane below. Webbed lead frame. Leads internally piece.
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
BiMOS UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER
UCN5804LB
Dimensions Inches
0.0125 0.0091
0.2992 0.2914
0.419 0.394
0.050 0.016 0.020 0.013
0.4133 0.3977
0.050
0.0926 0.1043 0.0040 MIN.
Dwg. MA-008-17A
Dimensions Millimeters (controlling dimensions)
0.32 0.23
7.60 7.40
10.65 10.00
1.27 0.40 0.51 0.33
10.50 10.10
1.27
2.65 2.35 0.10 MIN.
Dwg. MA-008-17A
NOTES:
Exact body lead configuration vendor's option within limits shown. Lead spacing tolerance non-cumulative Lead thickness measured seating plane below. Webbed lead frame. Leads internally piece.
BiMOS UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER
MOTOR DRIVERS SELECTION GUIDE
Function 3-Phase Controller/Drivers Hall-Effect Latched Sensors 2-Phase Hall-Effect Sensor/Controller Hall-Effect Complementary Output Sensor 2-Phase Hall-Effect Sensor/Driver 2-Phase Hall-Effect Sensor/Driver Hall-Effect Comp. Output Sensor/Driver 3-Phase Back-EMF Controller/Driver 3-Phase Controller/DMOS Driver 3-Phase Back-EMF Controller/Driver Current Controlled Dual Full Bridge Current Controlled Dual Full Bridge Current Controlled Dual Full Bridge Current Controlled Dual Full Bridge Dual Full Bridge Driver Current Controlled Full Bridge Current Controlled Full Bridge Current Controlled Dual Full Bridge Current Controlled Dual Full Bridge Unipolar Stepper Motor Quad Driver Unipolar Stepper-Motor Translator/Driver Unipolar Stepper-Motor Quad Driver Unipolar Microstepper-Motor Quad Driver Voice-Coil Motor Driver Voice-Coil Motor Driver Voice-Coil (and spindle) Motor Driver Output Ratings ±2.0 ±900 ±4.0 ±1.0 ±750 ±1.5 ±1.5 ±750 ±2.0 ±2.0 ±1.3 ±800 ±800 1.25 ±500 ±800 ±350 Part Number 2936 2936-120 3175 3177 3235 3275 3625 3626 5275 8902-A 8925 8984 2916 2917 2918 2919 2998 3952 3953 3961 3962 2544 5804 7024 7029 7042 8932-A 8958 8984 INTEGRATED CIRCUITS BRUSHLESS MOTORS
INTEGRATED BRIDGE DRIVERS BIPOLAR STEPPER MOTORS
OTHER INTEGRATED CIRCUIT PMCM MOTOR DRIVERS
Current maximum specified test condition, voltage maximum rating. specification sustaining voltage limits over-current protection voltage limits. Negative current defined coming (sourcing) output. Complete part number includes additional characters indicate operating temperature range package style.
Allegro MicroSystems, Inc. reserves right make, from time time, such departures from detail specifications required permit improvements design products. Components made under military approvals will accordance with approval requirements. information included herein believed accurate reliable. However, Allegro MicroSystems, Inc. assumes responsibility use; infringements patents other rights third parties which result from use.
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
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