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参数资料
| 型号： | A4989SLDTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 8/17页 |
| 文件大小： | 0K |
| 描述： | IC FULL BRDG MFET DRVR 38TSSOP |
| 标准包装： | 1 |
| 应用： | 步进电机控制器，2 相 |
| 输出数： | 1 |
| 电压 - 负载： | 12 V ~ 50 V |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 38-TFSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 38-TSSOP |
| 包装： | 标准包装 |
| 其它名称： | 620-1389-6 |
A4989
STEP
100
71
Dual Full-Bridge MOSFET Driver
with Microstepping Translator
STEP
100
71
Slow
Slow
Slow
I OUT1B (%*)
Phase = 1,
Direction = H
0
Slow
I OUT1B (%*)
Phase = 1,
Direction = H
0
Mixed
Mixed
Mixed
–71
–100
100
–71
–100
100
71
71
Slow
Slow
Slow
Slow
I OUT2B (%*)
Phase = 2,
0
I OUT2B (%*)
Phase = 2,
Mixed
0
Mixed
Mixed
Direction = H
Slow
Direction = H
–71
–100
*For precise definition of output levels, refer to table 3
Figure 2. Decay Mode for Full-Step Increments
STEP
100
92
71
–71
–100
*For precise definition of output levels, refer to table 3
Figure 3. Decay Modes for Half-Step Increments
I OUT1B (%*)
Phase = 1,
Direction = H
38
0
Slow
Mixed
Mixed
Slow
Mixed
Mixed
Slow
Mixed
–38
–71
–92
–100
100
92
71
38
I OUT2B (%*)
Phase = 2,
Direction = H
0
Mixed
Slow
Slow
Mixed
Mixed
Slow
Mixed
Mixed
–38
–71
–92
–100
*For precise definition of output levels, refer to table 3
Figure 4. Decay Modes for Quarter-Step Increments
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
8
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