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参数资料
| 型号： | A3980KLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 17/19页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER MICROSTEPPING 28-TSSOP |
| 标准包装： | 1 |
| 应用： | 步进电机驱动器 |
| 输出数： | 1 |
| 电流 - 输出： | ± 1A |
| 电压 - 负载： | 7 V ~ 50 V |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 28-TSSOP 裸露焊盘 |
| 包装： | 标准包装 |
| 产品目录页面： | 1140 (CN2011-ZH PDF) |
| 其它名称： | 620-1298-6 |
A3980
Automotive DMOS Microstepping Driver
with Translator
Current Sensing. To minimize inaccuracies caused by
ground-trace IR drops in sensing the output current level,
the current-sense resistors (R S1 and R S2 ) should have an
independent ground return to the star ground point. This path
should be as short as possible. For low-value sense resistors,
the IR drops in the printed circuit board sense resistor traces
can be signi ? cant and should be taken into account. The use
of sockets should be avoided as they can introduce variation
in R S due to their contact resistance.
The recommended value of the sense resistor, R S ( Ω ), is
given by
R S = 0.5 / I TripMAX
up to a maximum of 1 Ω for I TripMAX of 0.5 A. Below 0.5 A,
R S should be 1 Ω , and V REF reduced accordingly, as shown
in the following table.
I MAX (A)
Recommended
R S ( Ω ) V REF (V)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.00
1.00
1.00
1.00
1.00
0.83
0.71
0.63
0.56
0.50
0.8
1.6
2.4
3.2
4.0
4.0
4.0
4.0
4.0
4.0
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
16
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| A3981KLPTR-T | 功能描述:IC MOTOR DVR MICROSTEP 28-TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:* 标准包装:1 系列:- 应用:直流电机驱动器，步进电机驱动器 评估套件:- 输出数:1 或 2 电流 - 输出:750mA 电压 - 负载:10 V ~ 40 V 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-BFSOP（0.295"，7.50mm 宽） 供应商设备封装:24-SOP 包装:Digi-Reel® 其它名称:MTS62C19A-HS105DKR |
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