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| 型号： | A3972SB |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/11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
Features and Benefits
? ±1.5 A, 50 V Continuous Output Rating
? Low R DS(on) DMOS Output Drivers
? Optimized Microstepping via 6-Bit Linear DACs
? Programmable Mixed, Fast, and Slow Current-Decay
Modes
? 4 MHz Internal Oscillator for Digital Timing
? Serial-Interface Controls Chip Functions
? Synchronous Rectification for Low Power Dissipation
? Internal UVLO and Thermal Shutdown Circuitry
? Crossover-Current Protection
? Precision 2 V Reference
? Inputs Compatible with 3.3 or 5 V Control Signals
? Sleep and Idle Modes
Package: 24-pin DIP with 4 fused leads
(suffix B)
Not to scale
Description
Designed for pulse-width modulated (PWM) current control
of bipolar microstepping stepper motors, the A3972 is capable
of continuous output currents to ±1.5 A and operating voltages
to 50 V. Internal fixed off-time PWM current-control timing
circuitry can be programmed via a serial interface to operate
in slow, fast, and mixed current-decay modes.
The desired load-current level is set via the serial port with
two 6-bit linear DACs in conjunction with a reference voltage.
The six bits of control allow maximum flexibility in torque
control for a variety of step methods, from microstepping to
full-step drive. Load current is set in 1.56% increments of the
maximum value.
Synchronous rectification circuitry allows the load current
to flow through the low R DS(on) of the DMOS output driver
during the current decay. This feature will eliminate the
need for external clamp diodes in most applications, saving
cost and external component count, while minimizing power
dissipation.
Internal circuit protection includes thermal shutdown with
hysteresis, transient-suppression diodes, and crossover-current
protection. Special power-up sequencing is not required.
The A3972SB is supplied in a 24-pin plastic DIP with two
batwing power tabs (suffix ‘B’). The power tabs are at ground
potential and need no electrical isolation. The device is lead
(Pb) free with 100% matte tin leadframe plating.
Pin-out Diagram
29319.33, Rev. D
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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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