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| 型号： | A3972SB |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 9/11页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRIVER PWM DUAL 24-DIP |
| 标准包装： | 15 |
| 应用： | 步进电机驱动器 |
| 输出数： | 1 |
| 电流 - 输出： | ±1.5A |
| 电压 - 负载： | 15 V ~ 50 V |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 24-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 24-DIP |
| 包装： | 管件 |
A3972
Dual DMOS Full-Bridge
Microstepping PWM Motor Driver
APPLICATIONS INFORMATION
Current Sensing. To minimize inaccuracies in sensing the
I PEAK current level caused by ground-trace IR drops, the sense
resistor should have an independent ground return to the ground
terminal of the device. For low-value sense resistors, the IR
drops in the sense resistor ’s PCB 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.
Thermal Protection. Circuitry turns off all drivers when the
junction temperature reaches 165°C typically. It is intended
only to protect the device from failures due to excessive junction
temperature and should not imply that output short circuits are
permitted. Thermal shutdown has a hysteresis of approximately
15°C.
Serial Port Write Timing Operation. Data is clocked into
a shift register on the rising edge of CLOCK signal. Normally,
STROBE will be held high, and only will be brought low to
initiate a write cycle. The data is written MSB ? rst, followed
by the word-select bit. Refer to serial port diagram for timing
requirements.
SLEEP
H
STROBE
Layout. The printed wiring board should use a heavy ground
plane. For optimum electrical and thermal performance, the
driver should be soldered directly onto the board. The ground
side of R S should have an individual path to the ground pin(s) of
the driver. This path should be as short as physically possible
and should not have any other components connected to it. The
load supply pin, V BB , should be decoupled with an electrolytic
capacitor (>47 μ F is recommended) placed as close to the driver
as is possible.
C
D
E
F
G
CLOCK
A
B
DATA
D18
D17
D0
Dwg. WP-038-1
A. Minimum Data Setup Time .......................................15 ns
B. Minimum Data Hold Time ........................................10 ns
C. Minimum Setup Strobe to Clock Rising Edge ........150 ns
D. Minimum Clock High Pulse Width ...........................40 ns
E. Minimum Clock Low Pulse Width ............................40 ns
F. Minimum Setup Clock Rising Edge to Strobe ...........50 ns
G . Minimum Strobe Pulse Width .................................150 ns
H. Minimum Setup Sleep to Strobe Falling ...................50 μ s
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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| A3972SB-T | 功能描述:IC MOTOR DRIVER PWM DUAL 24-DIP 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 |
| A3973KB | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:DUAL FULL BRIDGE PROTECTED MOTOR DRIVER |
| A3973SB | 功能描述:IC MOTOR DRIVER PWM DUAL 24-DIP RoHS:否 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 |
| A3973SB-T | 功能描述:IC MOTOR DRIVER PWM DUAL 24-DIP 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 |
| A3973SLB | 功能描述:IC MOTOR DRIVER PWM DUAL 24SOIC RoHS:否 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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