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A3969SET-T Datasheet

  • A3969SET-T

  • Dual Full-Bridge PWM Motor Driver

  • 9頁

  • ALLEGRO   ALLEGRO

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A3969
Dual Full-Bridge PWM Motor Driver
Features and Benefits
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鹵650 mA Continuous Output Current
30 V Output Voltage Rating
Internal Fixed-Frequency PWM Current Control
Satlington Sink Drivers
User-Selectable Blanking Window
Internal Ground-Clamp and Flyback Diodes
Internal Thermal-Shutdown Circuitry
Crossover-Current Protection and UVLO Protection
Description
The A3969 is designed to drive both windings of a two-phase
bipolar stepper motor. The device includes two H-bridges
capable of continuous output currents of 鹵650 mA and operating
voltages to 30 V. Motor winding current can be controlled by
the internal fixed-frequency, pulse-width modulated (PWM),
current-control circuitry. The peak load current limit is set by
the user鈥檚 selection of a reference voltage and current-sensing
resistors.
The fixed-frequency pulse duration is set by a user-selected
external RC timing network. The capacitor in the RC timing
network also determines a user-selectable blanking window that
prevents false triggering of the PWM current-control circuitry
during switching transitions.
To reduce on-chip power dissipation, the H-bridge power
outputs have been optimized for low saturation voltages. The
sink drivers feature the Allegro
廬
patented Satlington
廬
output
structure. The Satlington outputs combine the low voltage drop
of a saturated transistor and the high peak current capability
of a Darlington.
Continued on the next page鈥?/div>
Package: 28 pin QFN (suffix ET)
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Approximate scale
Typical Application
+3.3 V
+24 V
+3.3 V
20 k惟
10 k惟
56 k惟
680 pF
47 渭F
28
27
26
25
24
23
22
21
20
19
0.5 惟
18
17
16
EN1
PH1
15
0.5 惟
1
2
3
4
5
LOGIC
LOGIC
EN2
PH2
6
7
V
BB
10
12
13
DS3969
14
11
8
9

A3969SET-T相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
    版本
    描述
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  • 英文版
    DUAL FULL-BRIDGE PWM MOTOR DRIVER
    ALLEGRO
  • 英文版
    DUAL FULL-BRIDGE PWM MOTOR DRIVER
    ALLEGRO [A...
  • 英文版
    DMOS Dual Full-Bridge PWM Motor Driver
    ALLEGRO
  • 英文版
    DMOS Dual Full-Bridge PWM Motor Driver
    ALLEGRO [A...
  • 英文版
    DUAL FULL-BRIDGE PWM MOTOR DRIVER
    ALLEGRO
  • 英文版
    DUAL FULL-BRIDGE PWM MOTOR DRIVER
    ALLEGRO [A...
  • 英文版
    MICROSTEPPING DRIVER WITH TRANSLATOR
    ALLEGRO
  • 英文版
    MICROSTEPPING DRIVER WITH TRANSLATOR
    ALLEGRO [A...
  • 英文版
    Dual Full-Bridge PWM Motor Driver
    ALLEGRO
  • 英文版
    Dual Full-Bridge PWM Motor Driver
    ALLEGRO [A...
  • 英文版
    DUAL FULL-BRIDGE PWM MOTOR DRIVER
    ETC
  • 英文版
    DMOS Dual Full-Bridge PWM Motor Driver
    ETC
  • 英文版
    DUAL FULL-BRIDGE PWM MOTOR DRIVER
    ALLEGRO
  • 英文版
    DUAL FULL-BRIDGE PWM MOTOR DRIVER
    ALLEGRO [A...
  • 英文版
    Stepper Motor Controller/Driver
    ETC
  • 英文版
    DUAL FULL-BRIDGE PWM MOTOR DRIVER
    ALLEGRO
  • 英文版
    DUAL FULL-BRIDGE PWM MOTOR DRIVER
    ALLEGRO [A...
  • 英文版
    AC Motor Controller, 4.5A, BCDMOS, PDSO24, PLASTIC, SOIC-24
    ALLEGRO
  • 英文版
    DUAL FULL-BRIDGE PWM MOTOR DRIVER
    ALLEGRO
  • 英文版
    DUAL FULL-BRIDGE PWM MOTOR DRIVER
    ALLEGRO [A...

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