- 您现在的位置：买卖IC网 > PDF目录1774 > A4988SETTR-T (Allegro Microsystems Inc)IC MICROSTEPPER MOTOR DRVR 28QFN PDF资料下载
参数资料
| 型号： | A4988SETTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC MICROSTEPPER MOTOR DRVR 28QFN |
| 特色产品： | A498x Motor Driver Family |
| 标准包装： | 1 |
| 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： | 28-VFQFN 裸露焊盘 |
| 供应商设备封装： | 28-QFN/MLP 裸露焊盘（5x5） |
| 包装： | 标准包装 |
| 其它名称： | 620-1343-6 |
A4988
DMOS Microstepping Driver with Translator
And Overcurrent Protection
Features and Benefits
Description
?
?
?
?
?
?
?
?
?
?
?
Low R DS(ON) outputs
Automatic current decay mode detection/selection
Mixed and Slow current decay modes
Synchronous rectification for low power dissipation
Internal UVLO
Crossover-current protection
3.3 and 5 V compatible logic supply
Thermal shutdown circuitry
Short-to-ground protection
Shorted load protection
Five selectable step modes: full, 1 / 2 , 1 / 4 , 1 / 8 , and 1 / 16
The A4988 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-, eighth-, and
sixteenth-step modes, with an output drive capacity of up to
35 V and ±2 A. The A4988 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
A4988. 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.
Package:
28-contact QFN
with exposed thermal pad
5 mm × 5 mm × 0.90 mm
(ET package)
Approximate size
The A4988 interface is an ideal fit for applications where a
complex microprocessor is unavailable or is overburdened.
During stepping operation, the chopping control in the A4988
automatically selects the current decay mode, Slow or Mixed.
In Mixed decay mode, the device is set initially to a fast decay
for a proportion of the fixed off-time, then to a slow decay for
the remainder of the off-time. Mixed decay current control
results in reduced audible motor noise, increased step accuracy,
and reduced power dissipation.
Continued on the next page…
Typical Application Diagram
V DD
0.22 μ F
0.1 μ F
0.1 μ F
0.22 μ F
5 k Ω
VREG ROSC
VDD
CP1
CP2
VCP
VBB1
VBB2
100 μ F
Microcontroller or
Controller Logic
SLEEP
STEP
MS1
A4988
OUT1A
OUT1B
SENSE1
MS2
MS3
DIR
ENABL E
RESET
OUT2A
OUT2B
SENSE2
4988-DS, Rev. 4
VREF
GND
GND
相关PDF资料 |
PDF描述 |
|---|---|
| A4989SLDTR-T | IC FULL BRDG MFET DRVR 38TSSOP |
| A6595KA-T | IC PWR DRIVER 8BIT SER 20-DIP |
| A6B259KLWTR | IC PWR DRVR 8BIT ADDRESS 20SOIC |
| A6B273KLWTR | IC PWR DRVR 8BIT ADDRESS 20SOIC |
| A8287SLBTR | IC REG LNB SUPPLY/CTRL 24-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| A4989 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A4989 is a dual full-bridge gate driver with integrated microstepping translator suitable for driving a wide range of higher power industrial bipolar 2-phase stepper motors (typically 30 to 500 W). |
| A4989SLDTR-T | 功能描述:IC FULL BRDG MFET DRVR 38TSSOP 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 |
| A4990KLPTR-T | 制造商:Allegro MicroSystems LLC 功能描述:IC DVR FULL BRIDGE DUAL 20TSSOP 制造商:ALLEGRO 功能描述:AUTOMOTIVE DUAL FULL BRIDGE DR 制造商:Allegro MicroSystems LLC 功能描述:AUTOMOTIVE DUAL FULL BRIDGE DR |
| A4992KLPTR-T | 制造商:Allegro MicroSystems LLC 功能描述:AUTOMOTIVE STEPPER MOTOR DRIVE |
| A4993KLPTR-T | 功能描述:IC MOTOR DVR STEP AUTO 制造商:allegro microsystems, llc 系列:* 零件状态:有效 标准包装:4,000 |
发布紧急采购，3分钟左右您将得到回复。