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参数资料
| 型号： | A3984SLPTR |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER MICROSTEPPING 24-TSSOP |
| 标准包装： | 4,000 |
| 应用： | 步进电机驱动器 |
| 输出数： | 1 |
| 电流 - 输出： | ±2A |
| 电压 - 负载： | 8 V ~ 35 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： | 24-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 24-TSSOP 裸露焊盘 |
| 包装： | 带卷 (TR) |
A3984
DMOS Microstepping Driver with Translator
Features and Benefits
? Low RDS(ON) outputs
? Automatic current decay mode detection/selection
? Mixed and Slow current decay modes
? Synchronous rectification for low power dissipation
? Internal UVLO and thermal shutdown circuitry
? Crossover-current protection
Package: 24-pin TSSOP with exposed
thermal pad (suffix LP)
Not to scale
Description
The A3984 is a complete microstepping motor driver with
built-in translator for easy operation. It is designed to
operate bipolar stepper motors in full-, half-, quarter-, and
sixteenth-step modes, with an output drive capacity of up to
35 V and ±2 A. The A3984 includes a fixed off-time current
regulator which has the ability to operate in Slow or Mixed
decay modes.
The translator is the key to the easy implementation of the
A3984. Simply inputting one pulse on the STEP input drives
the motor one microstep. There are no phase sequence
tables, high frequency control lines, or complex interfaces to
program. The A3984 interface is an ideal fit for applications
where a complex microprocessor is unavailable or is
overburdened.
The chopping control in the A3984 automatically selects
the current decay mode (Slow or Mixed). When a signal
occurs at the STEP input pin, the A3984 determines if
that step results in a higher or lower current in each of the
motor phases. If the change is to a higher current, then
the decay mode is set to Slow decay. If the change is to a
lower current, then the current decay is set to Mixed (set
Continued on the next page…
Pin-out Diagram
CP1
CP2
VCP
VREG
MS1
MS2
RESET
ROSC
SLEEP
1
2
3
4
5
6
7
8
9
24 GND
23 ENABLE
22 OUT2B
21 VBB2
20 SENSE2
19 OUT2A
18 OUT1A
17 SENSE1
16 VBB1
26184.30E
VDD 10
STEP 11
REF 12
15 OUT1B
14 DIR
13 GND
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A3984SLPTR-T | 功能描述:IC DRIVER MICROSTEPPING 24-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: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 |
| A3985 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Digitally Programmable Dual Full-Bridge MOSFET Driver |
| A3985SLD-T | 制造商:Allegro MicroSystems 功能描述:MOSFET DRVR 2V 8-OUT Hi/Lo Side Full Brdg 38-Pin TSSOP Tube 制造商:Allegro MicroSystems 功能描述:IC MOSFET DRIVER |
| A3985SLD-T | 制造商:Allegro MicroSystems 功能描述:MOSFET Driver IC |
| A3985SLDTR-T | 功能描述:IC MOSFET DRVR PROG DUAL 38TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 外部开关 系列:- 标准包装:5 系列:- 配置:低端 输入类型:非反相 延迟时间:600ns 电流 - 峰:12A 配置数:1 输出数:1 高端电压 - 最大（自引导启动）:- 电源电压:14.2 V ~ 15.8 V 工作温度:-20°C ~ 60°C 安装类型:通孔 封装/外壳:21-SIP 模块 供应商设备封装:模块 包装:散装 配用:BG2A-NF-ND - KIT DEV BOARD FOR IGBT 其它名称:835-1063 |
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