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参数资料
| 型号： | A3906SES-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 9/10页 |
| 文件大小： | 0K |
| 描述： | IC DVR DC/STEPPER MOTOR DUAL |
| 标准包装： | 92 |
| 应用： | 直流电机驱动器，步进电机驱动器 |
| 输出数： | 2/1 |
| 电流 - 输出： | ± 1A |
| 电源电压： | 2.5 V ~ 9 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN 裸露焊盘（4x4） |
| 包装： | 管件 |
| 其它名称： | 620-1249 |
A3906
Low Voltage Stepper and Single/Dual DC Motor Driver
becomes an ideal location for a star ground point. A low imped-
ance ground will prevent ground bounce during high current
operation and ensure that the supply voltage remains stable at
the input terminal. The recommended PCB layout shown in the
diagram below, illustrates how to create a star ground under the
device, to serve both as low impedance ground point and thermal
path.
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.
PCB Layout
C2
C3
C2
C3
C1
R1
OUT1A
C1
OUT1A
GND
U1
OUT1B
CP2
GND
SLEEP
A3906
PAD
SENSE1
OUT1B
VBB
R1
OUT1B
VBB
VBB
IN1
IN2
OUT2B
SENSE2
R2
OUT2B
R4
R2
OUT2B
OUT2A
+5V
R4
OUT2A
R3
GND
R3
+5V
PCB
A3906
Solder
Trace (2 oz.)
Signal (1 oz.)
Ground (1 oz.)
Thermal (2 oz.)
Thermal Vias
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A3906SESTR-T | 功能描述:IC DVR DC/STEP MOTOR DUAL 20-QFN 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 |
| A3907 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Low Voltage Voice Coil Motor Driver |
| A3907ECGTR | 功能描述:IC VOICE COIL MOTOR DVR 6-WLCSP 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 |
| A3908 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Low Voltage DC Motor Driver |
| A3908-0000T | 制造商:3M 制造商全称:3M Electronics 功能描述:100 x 100, PCB Two Row |
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