Specification

[AP1034]
016003455-E-01 - 2 - 2016/06
3. Table of Contents
1. General Description ........................................................................................................................................... 1
2. Features .............................................................................................................................................................. 1
3. Table of Contents ............................................................................................................................................... 2
4. Block Diagram ................................................................................................................................................... 3
5. Ordering Guide .................................................................................................................................................. 3
6. Pin Configurations and Function ....................................................................................................................... 4
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Pin Configurations ...................................................................................................................................... 4
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Functions .................................................................................................................................................... 5
7. Absolute Maximum Ratings .............................................................................................................................. 6
8. Recommended Operating Conditions ................................................................................................................ 7
9. Electrical Characteristics .................................................................................................................................... 7
10. Functional Descriptions ..................................................................................................................................... 9
10.1 Input and Output of Terminal ..................................................................................................................... 9
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Truth Table ................................................................................................................................................. 9
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ENABLEB : Output Enable Terminal ....................................................................................................... 9
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SLEEPB : Sleep Mode Setting Terminal ................................................................................................... 9
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MODE1,MODE2 : Motor Excitation Mode Setting Terminal ................................................................. 10
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STEP : Step Input Terminal ..................................................................................................................... 10
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DIR : Motor Rotation Direction Setting Terminal .................................................................................. 11
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RESETB : Home Position Setting Terminal ............................................................................................ 11
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FS : PWM Chopper Frequency Select Terminal ...................................................................................... 12
10.2 PWM Constant Current Control ............................................................................................................... 12
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Setting of the Output Current ................................................................................................................... 12
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Mixed Decay Mode Current Waveform ................................................................................................... 13
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Blanking Time .......................................................................................................................................... 13
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Output Transistor Operating Mode .......................................................................................................... 13
10.3 Micro-Step Function ................................................................................................................................. 14
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Step Sequence .......................................................................................................................................... 14
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Example of Current Waveforms in Each Excitation Mode ...................................................................... 15
10.4 Protection Functions ................................................................................................................................. 17
 Thermal Shutdown Circuit (TSD) ............................................................................................................ 17
 Under Voltage Lock Output Circuit (UVLO) .......................................................................................... 17
 Over Current Protection Circuit (OCP) .................................................................................................... 18
11. Recommended External Circuit ....................................................................................................................... 19
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Recommended External Circuit ............................................................................................................... 19
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Recommended Layout .............................................................................................................................. 20
12. Package ............................................................................................................................................................ 21
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Outline Dimensions .................................................................................................................................. 21
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Marking .................................................................................................................................................... 23
13. Revise History .................................................................................................................................................. 24
IMPORTANT NOTICE ..................................................................................................................................... 25