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
Pin Configurations...................................................................................................................................... 4
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
Truth Table ................................................................................................................................................. 9
ENABLEB : Output Enable Terminal....................................................................................................... 9
SLEEPB : Sleep Mode Setting Terminal ................................................................................................... 9
MODE1,MODE2 : Motor Excitation Mode Setting Terminal................................................................. 10
STEP : Step Input Terminal ..................................................................................................................... 10
DIR : Motor Rotation Direction Setting Terminal .................................................................................. 11
RESETB : Home Position Setting Terminal ............................................................................................ 11
FS : PWM Chopper Frequency Select Terminal ...................................................................................... 12
10.2 PWM Constant Current Control............................................................................................................... 12
Setting of the Output Current ................................................................................................................... 12
Mixed Decay Mode Current Waveform................................................................................................... 13
Blanking Time.......................................................................................................................................... 13
Output Transistor Operating Mode .......................................................................................................... 13
10.3 Micro-Step Function................................................................................................................................. 14
Step Sequence .......................................................................................................................................... 14
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
Recommended External Circuit ............................................................................................................... 19
Recommended Layout.............................................................................................................................. 20
12. Package ............................................................................................................................................................ 21
Outline Dimensions.................................................................................................................................. 21
Marking .................................................................................................................................................... 23
13. Revise History.................................................................................................................................................. 24
IMPORTANT NOTICE ..................................................................................................................................... 25