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| 型号： | A3988SJP-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 10/14页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DVR PWM FULL BRG 48LQFP |
| 标准包装： | 1 |
| 应用： | 直流电机驱动器，步进电机驱动器 |
| 输出数： | 2 或 4 |
| 电流 - 输出： | ±1.2A |
| 电压 - 负载： | 8 V ~ 36 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： | 48-LQFP 裸露焊盘 |
| 供应商设备封装： | 48-LQFP 裸露焊盘（7x7） |
| 包装： | 管件 |
A3988
Quad DMOS Full Bridge PWM Motor Driver
The two input capacitors should be placed in parallel, and as
close to the device supply pins as possible. The ceramic capaci-
tor should be closer to the pins than the bulk capacitor. This is
necessary because the ceramic capacitor will be responsible for
delivering the high frequency current components.
Sense Pins The sense resistors, RS x , should have a very low
impedance path to ground, because they must carry a large cur-
rent while supporting very accurate voltage measurements by
the current sense comparators. Long ground traces will cause
additional voltage drops, adversely affecting the ability of the
comparators to accurately measure the current in the windings.
As shown in the layout below, the SENSE x pins have very short
traces to the RS x resistors and very thick, low impedance traces
directly to the star ground underneath the device. If possible,
there should be no other components on the sense circuits.
Note: When selecting a value for the sense resistors, be sure not to
exceed the maximum voltage on the SENSE x pins of ±500 mV.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
10
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相关代理商/技术参数 |
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| A3988SJPTR-T | 功能描述:IC PWM MOTR DVR FULL BRDG 48LQFP 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:步进电机驱动器，1-2 相，2 相 评估套件:- 输出数:1 电流 - 输出:800mA 电压 - 负载:10 V ~ 28 V 电源电压:4.75 V ~ 5.25 V 工作温度:-20°C ~ 90°C 安装类型:表面贴装 封装/外壳:28-SOP + 2 翼片裸露焊盘 供应商设备封装:28-HSOPHC（15.2x7.9） 包装:剪切带 (CT) 其它名称:869-1268-1 |
| A3989 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Bipolar Stepper and High Current DC Motor Driver |
| A3989_V | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Bipolar Stepper and High Current DC Motor Driver |
| A39899 | 制造商:n/a 功能描述:Power Semiconductor |
| A3989SEV-T | 制造商:Allegro MicroSystems 功能描述:Motor Driver IC |
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