5804

5804 ALLEGRO

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Technical content

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. 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. 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 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.

FEATURES

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 BiMOS II UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER Always order by complete part number, e.g., UCN5804B . Dwg. W-194 SUPPLY DIRECTION OUTPUT ENABLE GROUND GROUND GROUND GROUND STEP INPUT HALF-STEP ONE-PHASEOUTPUT OUTPUT OUTPUT OUTPUT B BD D K C AC A K LOGIC OE 16DDV ABSOLUTE MAXIMUM RATINGS Output Sustaining Voltage, Package Power Dissipation, Operating Temperature Range, Storage Temperature Range, Data Sheet26184.12C* Note that the UCN5804B (dual in-line package) and UCN5804LB (small outline IC package) are electrically identical and share a common terminal number assignment. 5804

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000 5804 BiMOS II UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER TRUTH TABLE Drive Format Pin 9 Pin 10 Two-Phase L L One-Phase H L Half-Step L H Step-Inhibit H H TYPICAL INPUT CIRCUIT Dwg. EP-021-4 OUT K TYPICAL OUTPUT DRIVER Dwg. EP-010-5 IN VDD Copyright © 1987, 2000 Allegro MicroSystems, Inc. 50 75 100 125 150 ALLOWABLE PACKAGE POWER DISSIPATION IN WATTSTEMPERATURE IN °C Dwg. GP-049-2A R = 6.0°C/WθJT SUFFIX 'B', R = 43°C/WθJA SUFFIX 'LB', R = 63°C/WθJA

www.allegromicro.com 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 CEX VOUT = 50 V — 10 50 µA Output Sustaining Voltage V CE(sus) IOUT = 1.25 A, L = 3 mH 35 — — V Output Saturation Voltage V CE(SAT) IOUT = 700 mA — 1.0 1.2 V IOUT = 1 A — 1.1 1.4 V IOUT = 1.25 A — 1.2 1.5 V Clamp Diode Leakage Current I R VR = 50 V — 10 50 µA Clamp Diode Forward Voltage V F IF = 1.25 A — 1.5 3.0 V Input Current I IN(1) VIN = VDD —0 . 5 5 . 0 µA IIN(0) VIN = 0.8 V — -0.5 -5.0 µA Input Voltage V IN(1) VDD = 5 V 3.5 — 5.3 V Supply Current I DD 2 Outputs ON — 20 30 mA Turn-Off Delay t ON 50% Step Inputs to 50% Output — — 10 µs Turn-On Delay t OFF 50% Step Inputs to 50% Output — — 10 µs Thermal Shutdown Temperature T J — 165 — °C TIMING CONDITIONS Dwg. W-110A ONE PHASE HALF STEP OUTPUT A OUTPUT B OOUTPUT ENABLE OUTPUT C OUTPUT D TWO -PHASE HALF-STEP WAVE DRIVE OUTPUT DISABLED A B C CLOCK

Worcester, Massachusetts 01615-0036 (508) 853-5000 5804 BiMOS II UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER WAVE-DRIVE SEQUENCE Half Step = L, One Phase = H S t e p ABCD POR ON OFF OFF OFF

1 ON OFF OFF OFF

2 OFF ON OFF OFF

3 OFF OFF ON OFF

4 OFF OFF OFF ON

Half Step = L, One Phase = L S t e p ABCD POR ON OFF OFF ON

1 ON OFF OFF ON

2 ON ON OFF OFF

3 OFF ON ON OFF

4 OFF OFF ON ON

Half Step = H, One Phase = L S t e p ABCD POR ON OFF OFF OFF

3 OFF ON OFF OFF

4 OFF ON ON OFF

5 OFF OFF ON OFF

6 OFF OFF ON ON

7 OFF OFF OFF ON

8 ON OFF OFF ON

Internal power-on reset (POR) circuitry resets OUTPUTA (and OUTPUTD in 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. 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. 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. 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. 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.

www.allegromicro.com TYPICAL APPLICATION L/R Stepper-Motor Drive The products described here are manufactured under one or more 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.

Worcester, Massachusetts 01615-0036 (508) 853-5000 5804 BiMOS II UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVER UCN5804B Dimensions in Inches (controlling dimensions) Dimensions in Millimeters (for reference only) 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. 0.020 0.008 0.300 BSC Dwg. MA-001-17A in 0.430 MAX 1 8 0.280 0.240 0.210 MAX 0.070 0.045 0.015 MIN 0.022 0.014 0.100 BSC 0.005 MIN 0.150 0.115 0.775 0.735 NOTE 4 0.508 0.204 7.62 BSC Dwg. MA-001-17A mm 10.92 MAX 1 8 7.11 6.10 5.33 MAX 1.77 1.15 0.39 MIN 0.558 0.356 2.54 BSC 0.13 MIN 3.81 2.93 19.68 18.67 NOTE 4

www.allegromicro.com 0° TO 8° 2 3 7.60 7.40 10.50 10.10 10.65 10.00 0.51 0.33 2.65 2.35 0.10 MIN. 0.32 0.23 1.27 0.40 Dwg. MA-008-17A mm 1.27 BSC UCN5804LB (add “TR” to part number for tape and reel) Dimensions in Inches (for reference only) Dimensions in Millimeters (controlling dimensions) 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. 0° TO 8° 1 2 3 0.2992 0.2914 0.4133 0.3977 0.419 0.394 0.020 0.013 0.0926 0.1043 0.0040 MIN. 0.0125 0.0091 0.050 0.016 Dwg. MA-008-17A in 0.050 BSC 16 9

Worcester, Massachusetts 01615-0036 (508) 853-5000 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 — 28 V 3933 3-Phase Power MOSFET Controller — 50 V 3932 3-Phase Power MOSFET Controller — 50 V 7600 2-Phase Hall-Effect Sensor/Driver 400 mA 26 V 3626 Bidirectional 3-Phase Back-EMF Controller/Driver ±600 mA 14 V 8906 2-Phase Hall-Effect Sensor/Driver 900 mA 14 V 3625 3-Phase Back-EMF Controller/Driver ±900 mA 14 V 8902–A 3-Phase Controller/Drivers ±2.0 A 45 V 2936 & 2936-120 INTEGRATED BRIDGE DRIVERS FOR DC AND BIPOLAR STEPPER MOTORS Dual Full Bridge with Protection & Diagnostics ±500 mA 30 V 3976 PWM Current-Controlled Dual Full Bridge ±650 mA 30 V 3966 PWM Current-Controlled Dual Full Bridge ±650 mA 30 V 3968 PWM Current-Controlled Dual Full Bridge ±750 mA 45 V 2916 PWM Current-Controlled Dual Full Bridge ±750 mA 45 V 2919 PWM Current-Controlled Dual Full Bridge ±750 mA 45 V 6219 PWM Current-Controlled Dual Full Bridge ±800 mA 33 V 3964 PWM Current-Controlled Full Bridge ±1.3 A 50 V 3953 PWM Current-Controlled Dual Full Bridge ±1.5 A 45 V 2917 PWM Current-Controlled Microstepping Full Bridge ±1.5 A 50 V 3955 PWM Current-Controlled Microstepping Full Bridge ±1.5 A 50 V 3957 PWM Current-Controlled Dual DMOS Full Bridge ±1.5 A 50 V 3972 Dual Full-Bridge Driver ±2.0 A 50 V 2998 PWM Current-Controlled Full Bridge ±2.0 A 50 V 3952 DMOS Full Bridge PWM Driver ±2.0 A 50 V 3958 Dual DMOS Full Bridge ±2.5 A 50 V 3971 UNIPOLAR STEPPER MOTOR & OTHER DRIVERS Voice-Coil Motor Driver ±500 mA 6 V 8932–A Voice-Coil Motor Driver ±800 mA 16 V 8958 Unipolar Stepper-Motor Quad Drivers 1 A 46 V 7024 & 7029 Unipolar Microstepper-Motor Quad Driver 1.2 A 46 V 7042 Unipolar Stepper-Motor Translator/Driver 1.25 A 50 V 5804 Unipolar Stepper-Motor Quad Driver 1.8 A 50 V 2540 Unipolar Stepper-Motor Quad Driver 1.8 A 50 V 2544 Unipolar Stepper-Motor Quad Driver 3 A 46 V 7026 Unipolar Microstepper-Motor Quad Driver 3 A 46 V 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.