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L6228Q датащи(PDF) 2 Page - STMicroelectronics

номер детали L6228Q
подробное описание детали  DMOS driver for bipolar stepper motor
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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L6228Q датащи(HTML) 2 Page - STMicroelectronics

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Contents
L6228Q
2/32
Doc ID 14321 Rev 4
Contents
1
Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2
Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4
Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1
Power stages and charge pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2
Logic inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3
PWM current control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.4
Decay modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.5
Stepping sequence generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.6
Half step mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.7
Normal drive mode (full-step two-phase-on) . . . . . . . . . . . . . . . . . . . . . . 18
4.8
Wave drive mode (full-step one-phase-on) . . . . . . . . . . . . . . . . . . . . . . . 18
4.9
Non-dissipative overcurrent protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.10
Thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6
Output current capability and IC power dissipation . . . . . . . . . . . . . . 25
7
Thermal management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9
Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
10
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31


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