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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
General Description
Combining low-power CMOS logic with high-current, high-voltage power FET outputs, the Series SLA707XM translator/drivers provide complete control and drive for a two-phase unipolar stepper motor with internal fixed off time and pulse-width modulation (PWM) control of the output current in a power multi-chip module (PMCMTM). There are no phase-sequence tables, high-frequency control lines, or complex interfaces to program. The CMOS logic section provides the sequencing logic, direction, control, synchronous/asynchronous PWM operation, and a "sleep" function. The minimum CLOCK input is an ideal fit for applications where a complex P is unavailable or overburdened. TTL or LSTTL may require the use of appropriate pull-up resistors to ensure a proper input-logic high. For PWM current control, the maximum output current is determined by the user's selection of a reference voltage and sensing resistor. The NMOS outputs are capable of sinking up to 1, 1.5, 2, or 3 A (depending on device) and withstanding 46 V in the off state. Clamp diodes provide protection against inductive transients. Special power-up sequencing is not required. Full-,and Half-step operation are externally selectable for the SLA7070/71/72/73MR. Full-, Half-, quarter-, and eighth-, and sixteenth-step operation are externally selectable for the SLA7075/76/77/78MR. Half-step excitation alternates between the one-phase and two-phase modes (A-AB-B-AB-A-AB-BAB),providing an eight-step sequence.
February, 2006
Package--SLA23Pin
Applications
PPC Printer OA Equipment
Key Specifications
Motor Supply Voltage (VM): 44V max Load Supply Voltage (Vs): 10V to 44V Logic Supply Voltage (Vcc): 3V to 5.5V Output Current (Io): 1A(SLA7070MxRxx, SLA7075MxRxx) 1.5A(SLA7071MxRxx, SLA7076MxRxx) 2A(SLA7072MxRxx, SLA7077MxRxx) 3A(SLA7073MxRxx, SLA7078MxRxx) The x represents P, W, or R according to the functions (See App Note). Output Maximum Voltage (VDSS): 100V min
Features
To 3 A Output Rating Internal Sequencer for Microstepping Operation PWM Constant-Current Motor Drive Cost-Effective, Multi-Chip Solution 100 V, Avalanche-Rated NMOS Outputs Low RDS(on) NMOS Outputs (150 milliohms typical) Advanced, Improved Body Diodes Inputs Compatible with 3.3 V or 5 V Control Signals Sleep Mode Internal Clamp Diodes
Typical Connection
Vs=10V 44V
Vcc=3.0V 5.5V
Sleep
CA
Q1
r1
C1
OutA VDD
OutA
VBB
OutB
OutB
CB

Reset Clock CW/CCW M1 SLA707XMR M2 M3 Sync Mo N.C. Ref/Sleep1 SenseA Gnd r2 r3
Microcomputer
SenseB
C2 1Gnd
Gnd Logic Ground
Single Point Ground
Power Ground Gnd
.
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
Scope
The present specifications shall apply to a micro-stepping capable 2-phase unipolar stepper motor driver IC, SLA7077MR and shall apply to the devices compliant with RoHS Directive. Lead part solder: Pb free. Inner solder: Containing Pb > 85%. * Please refer to the electric characteristics in the application note for other devices of the series.
February, 2006
Outline
Type Structure Applications Hybrid integrated circuit Plastic molded (transfer mold) To drive a 2-phase stepper motor. (Micro-Stepping Capable. PWM Constant-Current Control.)
Absolute maximum ratings
Parameter Load Supply Voltage Main Power Supply Voltage Logic Supply Voltage Output Current Logic Input Voltage REF Input Voltage Sense Voltage Power Dissipation Junction Temperature
Operating Temperature Range
Symbol VM VBB VDD IO VIN VREF VRS PD Tj Ta
Ratings 46 46 7 2.0* -0.3 to VDD+0.3 -0.3 to VDD+0.3 2 4.7 17 150 -20 to 85
Unit V V V A V V V W W C C
Remarks
Vref=0.4V, Mode F
Except for tw<1s At Ta=25C At Tc=25C
Storage Temperature Range Tstg -30 to 150 C *Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any conditions, do not exceed the specified junction temperature(Tj).
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
Electrical characteristics
Recommendable Operating Range Parameter Load Supply Voltage
Main Power Supply Voltage Range
February, 2006
Symbol VM VBB VDD VREF TC
MIN
Ratings MAX 44 10 44 5.5 0.4 90
Unit V V V V C
Remarks
Logic Supply Voltage Range REF Input Voltage Range Case Temperature
3.0 0.04
Please adjust the Vcc surge voltage to 0.5V or less. The control current accuracy decreases in 0.1V or less.
12Pin temperature With no Fin
Electrical Characteristic
(Ta=25C,VBB=24V,VDD=5V Unless Otherwise Noted.) Limits Parameter Symbol Unit Min. Typ. Max. IBB 15 mA Main Power Supply Current 100 A IBBS Logic Supply Current IDD 5 mA Drain-Source Breakdown Output On Resistance V(BR)DS RDS(on) 100 0.25 0.4 V
Test Condition Regularity
at SLEEP operation
VBB=44V ID=1mA
Io=2A
Io=2A VF 0.95 1.2 V fclk 250* kHz duty=50% VLIL 0.25 VDD V Logic Input Voltage VLIH 0.75VDD V ILIL 1 A Logic Input Current 1 A ILIH Stationary current control VREF 0 0.45 V REF Input Voltage Range at SLEEP operation 2.0 VDD V VREFS *Operation at a step frequency greater than the specified minimum value is possible but not warranted.
Body Diode Forward Voltage Maximum Clock Frequency
Note. Negative current is defined as the outflowing current from the specified pin.
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
REF Input Current
February, 2006
IREF 10 A VREF=0 to VDD VLOL 1.25 V ILOL =1.25mA Logic Output Voltage VDD-1.25 V ILOH =-1.25mA VLOH ILOL 1.25 mA Logic Output Current -1.25 mA ILOH Operation at a step frequency greater than the specified minimum value is possible but not warranted. Note. Negative current is defined as the outflowing current from the specified pin. Electrical Characteristic(continued) (Ta=25C,VBB =24V,VDD =5V Unless Otherwise Noted.) Limits Characteristic Symbol Unit Test Condition Min. Typ. Max. VREF=0.3V Sense Voltage VSENSE 0.3 V Mode F Current detection Resistance Rs Mode F Mode E Mode D Mode C Mode B Mode A Mode 9 Mode 8 Mode 7 Mode 6 Mode 5 Mode 4 Mode 3 Mode 2 Mode 1 tSE tpdon tpdoff tON(min) tOFF1 tOFF2 tOFF3 0.199 0.205 100 98.1 95.7 92.4 88.2 83.1 77.3 70.7 63.4 55.5 47.1 38.2 29.0 19.5 9.8 100 2.0 1.5 1.7 12 9 7 0.211 % % % % % % % % % % % % % % % s s s s s s s
Step Reference Current Ratio
VREF=0.04V to 0.4V
Wake-Up time Switching Time PWM Minimum On Time PWM OFF Time
Sleep1 & Sleep2
ClockOut ON ClockOut OFF
Mode 8 to F Mode 4 to 7 Mode 1 to 3
Note. Negative current is defined as coming out of the specified pin.
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
Thermal Design Data
150 125 Tj-a= 26.6xPD T[] 100 75 Tc-a= 21.3xPD 50 25 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 PD Allowable Package Power [W] Dissipation PD [W]
February, 2006
Truth Table Input Pin Name Low Level High Level Clock Reset Run Logic Reset CW/CCW Forward (CW) Reverse(CCW) M1 M2 Micro-Stepping Operation Mode Setting M3 Ref Sleep Mode 1* Sync Asynchronous PWM Operation Synchronous PWM Operation * With a setup of a sleep mode 1, the operation is "Output Disable" and "Sequencer Enable"
T [C]
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
Micro-Stepping Operation Mode Setting Operation Mode M1 M2 M3 Remarks 2 Phase(1 Step) L L L Mode 8 only 2Phase(1 Step) H L L Mode F only 1-2 Phase(1/2 Step) L H L Mode 8, F 1-2 Phase(1/2 Step) H H L Mode F W1-2 Phase(1/4 Step) L L H Mode 4,8,C,F W1-2 Phase(1/8 Step) H L H Mode 2,4,6,8,A,C,E,F 4W1-2 Phase(1/16 Step) L H H Mode 1 to F Sleep Mode 2* H H H * With a setup of a sleep mode 2, the operation is "Output Disable" and "Sequencer Hold". Sleep mode 2 operates without depending on the Clock.
February, 2006
Output Pin Pin Name Mo
High Level Half-Step Position (Mode 8)
Low Level -
Logic Input Timing Requirements
Reset
2s(min) 5s(min) 4s(min) 2s(min) 2s(min) 1s(min) 1s(min) 1s(min) 1s(min)
Clock CW/CCW M1 M2 M3
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
Step Sequencing Chart 2Phase Mode: 8 M1: L,
RESET CLOCK
February, 2006
M2: L,
M3: L
... 0 B 1 2
CW
A
0
A
70.7
CCW
70.7 0
Mode: F M1: H,
RESET CLOCK
M2: L,
M3: L
... 0 B 1 2
CW
A
0
A
CCW
0 10
0
B
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
1-2Phase Mode: 8 <=> F
RESET CLOCK
February, 2006
M1: L,
M2: H,
M3: L
... 0 1 B 2 3 4
CW
A
0
A
70.7
CCW
70.7
0 10
Mode: F
RESET CLOCK
M1:H,
M2: H,
0
B
M3: L
... 0 1 B 2 3 4
CW
A
0
A
CCW
0 10
0
B
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
...
16
February, 2006
10
11
12
13
14
15
9
A
5
6
7
B
CCW
8
4
3
2
W1-2Phase
1
CW
0
CLOCK
RESET
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A
92.4 98.1 0 10
0
19.5
38.2
55.5
70.7
83.1
B
19.5
38.2
55.5
70.7
83.1
92.4
98.1
0
2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
...
February, 2006
10
11
12
13
14
15
16
9
A
5
6
7
B
CCW
8
4
3
2
1
CW
2W1-2Phase
0
CLOCK
RESET
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A
92.4 98.1 0 10
0
19.5
38.2
55.5
70.7
83.1
B
19.5
38.2
55.5
70.7
83.1
92.4
98.1
0
4W1-2Phase
RESET
CLOCK
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
...
0
1
2
3
4
B
2-Phase Unipolar Stepper Motor Driver
CW
SLA707XM Series
95.7
88.2 83.1
77.3
70.7
63.4
55.5
47.1
38.2
29.0
19.5
0 10
9.8
98.1
I03-004EA-060227
0
92.4
Sanken Electric Co.,Ltd.
A
11/20
A
0
9.8
19.5
29.0
38.2
47.1
55.5
63.4
70.7
77.3
83.1 88.2
92.4
CCW
98.1
95.7
February, 2006
B
2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
Block diagram (Connection diagram)
Internal functional block diagram
CW/CCW
February, 2006
Reset
Clock
OutB
OutB
OutB
1
OutA 5
2
OutA
OutB
3
OutA
4
OutA
N.C.
VBB
14
VDD
13
Ref
Mo 6
M2
M3
M1
18
7
8
9 16 10 15
11
20 21 22 23
MIC
PreDriver Sequencer & Sleep Circuit
Reg. PreDriver
DAC
DAC Synchro Control
SenseA
+ Comp Rs
OSC
Comp PWM Control OSC
PWM Control
+ Rs
19 SenseB
17 Sync
12 Gnd
Pin Assignment (Terminal Functions) Pin No. Symbol Function 1, 2 Out A Phase A Output 3, 4 Out A/ Phase A/ Output 5 Sense A Phase A Current Sense 6 Mo Position Monitoring Output 7 M1 Micro-Stepping Operation Mode and 8 M2 Sleep Mode 2 Setting Input 9 M3 10 Clock Step Clock Input 11 VBB Main Power Supply (For Motor) 12 Gnd GND Control Current and Sleep Mode 1 13 Ref Setting Input. 14 VDD Logic Supply 15 Reset Reset Input for Logic Circuit 16 CW/CCW Forward / Reverse Switch Input 17 Sync PWM Chopping Function Select Input 18 N.C. Non Connection 19 Sense B Phase B Current Sense 20, 21 Out B/ Phase B/ Output 22, 23 Out B Phase B Output
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
Example application circuit
Vs=10V 44V
February, 2006
Vcc=3.0V 5.5V
Sleep
CA
Q1
r1
C1
OutA VDD
OutA
VBB
OutB
OutB
CB

Reset Clock CW/CCW M1 SLA7077MR M2 M3 Sync Mo N.C. Ref/Sleep1 SenseA Gnd r2 r3
Microcomputer
SenseB
C2 1Gnd
Logic Gnd Ground
Single Point Ground
PowerGnd Ground
Reference constant R1 = 10k R2 = 5.1k (VR) R3 = 10k CA = 100F/50V CB = 10F/10V C1 = 0.1F
* Take precautions to avoid noise on the VDD line: Switching noise from PCB traces, where high current flows, to the VDD line should be minimized because the noise level more than 0.5V on the VDD line may cause malfunctioning operation. The tip for avoiding such problem is to separate the logic GND (S-GND) and the power GND (P-GND) on the PCB, and then connect them together at IC GND pin (pin 12).
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
Package information
Package type, physical dimensions and Material
February, 2006
Gate Flash
a b d c
(Fin)
JAPAN
(Base measurement)
(Tip measurement)
(Tip measurement)
a. Part Number (1) b. Part Number (2)
(Includes Mold Flash)
c. Part Number (3) d. Lot Number
1st letter
SLA707XMR* WB (Marked per functions.)* P (Marked per functions.)* The last digit of year Month 1 to 9 :
Arabic Numerals for Jan. to Sep.
2nd letter
Dimensions in millimeters Material of terminal : Cu Treatment of terminal : Ni planting + solder dip (Pb Free) Appearance The body shall be clean and shall not bear any stain, rust or flaw. Marking The part number and lot number shall be clearly marked in white.
3rd &4th letter
October : O November : N December : D Day 01 to 31 : Arabic Numerals
* The letter x in Part Number (1) represents one number from 0 to 3 and 5 to 8 according to the combination of the current rating and sequencer. The letter P, R, W, B represent the functions built-in. (No marking for non built-in functions.)
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
Packing specifications
February, 2006
31
580
* Rubber stoppers are provided on both ends of a stick. * 18 pcs in X direction (Maximum: 18 pcs per stick)
8 X
130 610
* 20 sticks in Y direction 3 sticks in Z direction
185 Z Y
* 18pcsx20x3 =1080 pcs(Max.)
Dimensions in millimeters
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
Cautions and warnings
The calculation of control current SLA707XMR control current Io (at Mode F) is calculated as follows:
February, 2006
IO =
V REF
RS
Setting the REF voltage more than 2V activates the sleep mode 1 (all outputs are in OFF state). Even in this case, the internal logic circuit is alive.
Logic input/output (RESET, CLOCK, CW/CCW, M1, M2, M3, SYNC, Mo) * The timing shown below shall comply with the "Logic input timing". -The rising edge timing of CW/CCW, M1, M2, M3 and CLOCK input -The RESET release timing (=the falling edge on RESET input) and the rising edge timing of CLOCK input *In case the above does not comply with the "Logic input timing", the device may operate with an unexpected sequence. * Be sure not to leave the logic inputs (RESET, CLOCK, CW/CCW, M1, M2, M3, SYNC) open. Be sure to connect the unused logic inputs to VDD or GND. *In case any of the logic inputs are left "OPEN", malfunction may occur due to external noises. * When the logic output (Mo) is not used, be sure to keep it "OPEN". *In case it is connected to VDD or GND, it may cause the device's deterioration or/and breakdown. Mounting on a heat sink 1) Recommended Mounting Torque (on an External Heat sink) 2) Recommended Silicone G746 YG6260 SC102 {SHIN-ETSU CHEMICAL} {TOSHIBA SILICONE} {DOW CORNING TORAY SILICONE}
0.490 to 0.822N*m
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
Notice This device has C-MOS inputs. Please note the following contents.
February, 2006
* When a static electricity is liable to be troublesome, especially in winter, be sure to control the room humidity properly. * Be sure to take some proper measures for wirings from the IC input pins and for assembly processes in order not to apply static charges to IC leads. PC board pins should be shorted together to keep them in the same potential to avoid this kind of trouble.
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series

February, 2006
Asia Pacific
China
Sanken Electric Hong Kong Co., Ltd. Suite 1026 Ocean Centre, Canton Road, Tsimshatsui, Kowloon, Hong Kong Tel: 852-2735-5262 Fax: 852-2735-5494 Sanken Electric (Shanghai) Co., Ltd. Room3202, Maxdo Centre, Xingyi Road 8, Changning district, Shanghai, China Tel: 86-21-5208-1177 Fax: 86-21-5208-1757 Taiwan Sanken Electric Co., Ltd. Room 1801, 18th Floor, 88 Jung Shiau East Road, Sec. 2, Taipei 100, Taiwan R.O.C. Tel: 886-2-2356-8161 Fax: 886-2-2356-8261
India
Saket Devices Pvt. Ltd. Office No.13, First Floor, Bandal - Dhankude Plaza, Near PMT Depot, Paud Road, Kothrud, Pune - 411 038, India Tel: 91-20-5621-2340 91-20-2528-5449 Fax: 91-20-2528-5459
Japan
Sanken Electric Co., Ltd. Overseas Sales Headquaters Metropolitan Plaza Bldg. 1-11-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-0021, Japan Tel: 81-3-3986-6164 Fax: 81-3-3986-8637
Korea
Sanken Electric Korea Co., Ltd. Mirae Asset Life Bldg. 6F, 168 Kongduk-dong, Mapo-ku, Seoul, 121-705, Korea Tel: 82-2-714-3700 Fax: 82-2-3272-2145
Singapore
Sanken Electric Singapore Pte. Ltd. 150 Beach Road, #14-03 The Gateway West, Singapore 189720 Tel: 65-6291-4755 Fax: 65-6297-1744
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
Europe
United Kingdom
Sanken Power Systems (UK) Limited Pencoed Technology Park, Pencoed, Bridgend CF35 5HY. UK Tel: 44-1656-869-100 Fax: 44-1656-869-162
February, 2006
North America
United States
Allegro MicroSystems, Inc. 115 Northeast Cutoff, Worcester, Massachusetts 01606, U.S.A. Tel: 1-508-853-5000 Fax: 1-508-853-3353 Allegro MicroSystems, Inc. (Southern California) 14 Hughes Street, Suite B105, Irvine, CA 92618 Tel: 1-949-460-2003 Fax: 1-949-460-7837
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2-Phase Unipolar Stepper Motor Driver
SLA707XM Series
CAUTION / WARNING
February, 2006
The information in this publication has been carefully checked and is believed to be accurate; however, no responsibility is assumed for inaccuracies. Sanken reserves the right to make changes without further notice to any products herein in the interest of improvements in the performance, reliability, or manufacturability of its products. Before placing an order, Sanken advises its customers to obtain the latest version of the relevant information to verify that the information being relied upon is current. Application and operation examples described in this catalog are quoted for the sole purpose of reference for the use of the products herein and Sanken can assume no responsibility for any infringement of industrial property rights, intellectual property rights or any other rights of Sanken or any third party which may result from its use. When using the products herein, the applicability and suitability of such products for the intended purpose or object shall be reviewed at the users' responsibility. Although Sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure nd defect of semiconductor products at a certain rate is inevitable. Users of Sanken products are requested to take, at their own risk, preventative measures including safety design of the equipment or systems against any possible injury, death, fires or damages to the society due to device failure or malfunction. Sanken products listed in this catalog are designed and intended for the use as components in general purpose electronic equipment or apparatus (home appliances, office equipment, telecommunication equipment, measuring equipment, etc.). Before placing an order, the user's written consent to the specifications is requested. When considering the use of Sanken products in the applications where higher reliability is required (transportation equipment and its control systems, traffic signal control systems or equipment, fire/crime alarm systems, various safety devices, etc.), please contact your nearest Sanken sales representative to discuss and obtain written confirmation of your specifications. The use of Sanken products without the written consent of Sanken in the applications where extremely high reliability is required (aerospace equipment, nuclear power control systems, life support systems, etc.) is strictly prohibited. Anti radioactive ray design is not considered for the products listed herein. This publication shall not be reproduced in whole or in part without prior written approval from Sanken. This is notification that you, as purchaser of the products/technology, are not allowed to perform any of the following: 1. Resell or retransfer these products/technology to any party intending to disturb international peace and security. 2. Use these products/technology yourself for activities disturbing international peace and security. 3. Allow any other party to use these products/technology for activities disturbing international peace and security. Also, as purchaser of these products/technology, you agree to follow the procedures for the export or transfer of these products/technology, under the Foreign Exchange and Foreign Trade Law, when you export or transfer the products/technology abroad.
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