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L6208QTR Datasheet(PDF) 2 Page - STMicroelectronics

Part # L6208QTR
Description  DMOS driver for bipolar stepper motor
Download  34 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6208QTR Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
L6208Q
2/34
DocID018710 Rev 3
Contents
1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2
Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5
Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1
Power stages and charge pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.2
Logic inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.3
PWM current control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.4
Decay mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.5
Stepping sequence generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.6
Half step mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.7
Normal drive mode (full step two-phase-on) . . . . . . . . . . . . . . . . . . . . . . 19
5.8
Wave drive mode (full step one-phase-on) . . . . . . . . . . . . . . . . . . . . . . . 19
5.9
Non-dissipative overcurrent detection and protection . . . . . . . . . . . . . . . 20
5.10
Thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7
Output current capability and IC power dissipation . . . . . . . . . . . . . . 26
8
Thermal management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9
Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
10
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30


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