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A3981KLPTR-T PDF预览

A3981KLPTR-T

更新时间: 2024-02-25 22:35:42
品牌 Logo 应用领域
急速微 - ALLEGRO 驱动器
页数 文件大小 规格书
42页 943K
描述
Stepper Motor Controller, PDSO28, 9.70 X 4.40 MM, 1.20 MM HEIGHT, LEAD FREE, MO-153AET, TSSOP-28

A3981KLPTR-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:TSSOP
包装说明:HTSSOP, TSSOP28,.25针数:28
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:1.38
Is Samacsys:N模拟集成电路 - 其他类型:STEPPER MOTOR CONTROLLER
JESD-30 代码:R-PDSO-G28JESD-609代码:e3
长度:9.7 mm湿度敏感等级:2
功能数量:1端子数量:28
最高工作温度:150 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:HTSSOP
封装等效代码:TSSOP28,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
电源:3.3,7/28 V认证状态:Not Qualified
座面最大高度:1.2 mm子类别:Motion Control Electronics
最大供电电流 (Isup):5 mA最大供电电压 (Vsup):5.5 V
最小供电电压 (Vsup):3 V标称供电电压 (Vsup):3.3 V
表面贴装:YES温度等级:AUTOMOTIVE
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:4.4 mm
Base Number Matches:1

A3981KLPTR-T 数据手册

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A3981  
Automotive, Programmable Stepper Driver  
Description  
Features and Benefits  
TheA3981isaflexiblemicrosteppingmotordriverwithbuilt-in  
• Peak motor current up to ±1.4 A, 28 V  
translatorforeasyoperation.Itisasingle-chipsolution,designed  
to operate bipolar stepper motors in full-, half-, quarter- and  
sixteenth-step modes, at up to 28 V and ±1.4 A. The A3981  
can be controlled by simple Step and Direction inputs, or  
through the SPI-compatible serial interface that also can be  
used to program many of the integrated features and to read  
diagnostic information.  
• Low RDS(on) outputs, 0.5 Ω source and sink, typical  
• Automatic current decay mode detection/selection  
• Mixed, Fast, and Slow current decay modes  
• Synchronous rectification for low power dissipation  
• Internal OVLO, UVLO, and Thermal Shutdown circuitry  
• Crossover-current protection  
• Short circuit and open load diagnostics  
• Hot and cold thermal warning  
• Stall detect features  
• SPI-compatible or simple Step and Direction motion control  
• Highly configurable via SPI-compatible serial interface  
The current regulator can be programmed to operate in fixed  
off-time or fixed frequency PWM, with several decay modes  
to reduce audible motor noise and increase step accuracy.  
In addition the phase current tables can be programmed via  
the serial interface to create unique microstep current  
profiles to further improve motor performance for  
specific applications.  
Applications  
• Automotive stepper motors  
• Engine management  
The current in each phase of the motor is controlled through a  
DMOS full bridge, using synchronous rectification to improve  
power dissipation. Internal circuits and timers prevent cross-  
conduction and shoot-through, when switching between high-  
side and low-side drives.  
• Headlamp positioning  
Package: 28-pin TSSOP with exposed  
thermal pad (suffix LP)  
The outputs are protected from short circuits, and features  
for low load current and stalled rotor detection are included.  
Chip-levelprotectionincludes:hotandcoldthermalwarnings,  
overtemperature shutdown, and overvoltage and undervoltage  
lockout.  
TheA3981 is supplied in a 28-pin TSSOPpower package with  
an exposed thermal pad (package type LP). This package is  
lead (Pb) free with 100% matte-tin leadframe plating.  
Not to scale  
Typical Applications  
Automotive  
12V Power Net  
Automotive  
12V Power Net  
Logic  
Supply  
Logic  
Supply  
CP1 CP2  
VDD  
STEP  
DIR  
MS0  
MS1  
ENABLE  
RESETn  
DIAG  
CP1 CP2  
VDD  
STEP  
DIR  
MS0  
MS1  
ENABLE  
RESETn  
DIAG  
VCP VBB  
OAP  
VCPVBB  
OAP  
OAM  
OAM  
Micro-  
controller  
or  
Micro-  
controller  
or  
Stepper  
Motor  
Stepper  
Motor  
REF  
REF  
OBP  
OBM  
OBP  
OBM  
SDI  
SDI  
ECU  
ECU  
SDO  
SCK  
STRn  
SDO  
SCK  
STRn  
VREG  
VREG  
SENSA  
SENSB  
SENSA  
SENSB  
OSC  
OSC  
AGND PGND  
AGND PGND  
Serial Interface Control  
Parallel Control  
A3981-DS, Rev. 4  

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