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A3982SLB-T PDF预览

A3982SLB-T

更新时间: 2024-01-25 06:13:52
品牌 Logo 应用领域
急速微 - ALLEGRO 驱动器转换器光电二极管电动机控制电机
页数 文件大小 规格书
10页 299K
描述
DMOS Stepper Motor Driver with Translator

A3982SLB-T 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:SOIC
包装说明:SOP, SOP24,.4针数:24
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:1.62
模拟集成电路 - 其他类型:STEPPER MOTOR CONTROLLERJESD-30 代码:R-PDSO-G24
JESD-609代码:e3长度:15.4 mm
湿度敏感等级:3功能数量:1
端子数量:24最高工作温度:85 °C
最低工作温度:-20 °C最大输出电流:2 A
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP24,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
电源:3.3/5,35 V认证状态:Not Qualified
座面最大高度:2.65 mm子类别:Motion Control Electronics
最大供电电流 (Isup):8 mA最大供电电压 (Vsup):5.5 V
最小供电电压 (Vsup):3 V表面贴装:YES
技术:NMOS温度等级:OTHER
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:7.5 mm
Base Number Matches:1

A3982SLB-T 数据手册

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A3982  
DMOS Stepper Motor Driver with Translator  
The A3982 is a complete stepper motor driver with built-in translator  
for easy operation. It is designed to operate bipolar stepper motors in  
full- and half-step modes, with an output drive capacity of up to 35 V  
and ±2 A. The A3982 includes a fixed off-time current regulator which  
Package LB  
OUT1A  
24  
OUT2A  
SENSE2  
VBB2  
1
2
has the ability to operate in Slow or Mixed decay modes.  
SENSE1  
23  
The translator is the key to the easy implementation of the A3982.  
VBB1  
22  
3
Simply inputting one pulse on the STEP input drives the motor one  
step. There are no phase sequence tables, high frequency control lines,  
or complex interfaces to program. The A3982 interface is an ideal fit  
for applications where a complex microprocessor is unavailable or is  
overburdened.  
OUT1B  
21  
OUT2B  
ENABLE  
PGND  
PGND  
CP1  
4
DIR  
20  
5
PGND  
PGND  
REF  
6
19  
18  
17  
16  
15  
14  
13  
7
8
The chopping control in the A3982 automatically selects the current  
decay mode (Slow or Mixed). When a signal occurs at the STEP input  
pin, the A3982 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 initially to a fast  
decay for a period amounting to 31.25% of the fixed off-time, then  
to a slow decay for the remainder of the off-time). This current decay  
control scheme results in reduced audible motor noise, increased step  
accuracy, and reduced power dissipation.  
CP2  
STEP  
VDD  
9
VCP  
10  
11  
12  
VREG  
MS1  
ROSC  
RESET  
Internal synchronous rectification control circuitry is provided to  
improve power dissipation during PWM operation.  
Approximate Scale 1:1  
Internal circuit protection includes: thermal shutdown with hysteresis,  
undervoltage lockout (UVLO), and crossover-current protection.  
Special power-on sequencing is not required.  
ABSOLUTE MAXIMUM RATINGS  
Load Supply Voltage,VBB ...................................35 V  
Output Current, IOUT.........................................±2 A*  
Logic Input Voltage, VIN ..................... –0.3 V to 7 V  
Sense Voltage, VSENSE .......................................0.5 V  
Reference Voltage, VREF ………..........................4 V  
Operating Temperature Range  
Ambient, TA ................................. –20°C to 85°C  
Junction Temperature, TJ(MAX).....................150°C  
Storage Temperature, TS .................... –55°C to 150°C  
*Output current rating may be limited by duty cycle,  
ambient temperature, and heat sinking. Under any  
set of conditions, do not exceed the specified current  
rating or a junction temperature of 150°C.  
The A3982 is supplied in a 24-pin wide-body SOIC (package LB) with  
internally-fused power ground leads. It is also available in a lead (Pb)  
free version (suffix –T), with 100% matte tin plated leadframes.  
FEATURES  
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  
Use the following complete part number when ordering:  
Part Number  
A3982SLB  
Pb-free  
Package  
Ambient  
24-pin, Wide SOIC  
–20°C to 85°C  
A3982SLB-T  
Yes  
26184.28B  

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