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A3984SLPT-T PDF预览

A3984SLPT-T

更新时间: 2024-02-19 14:18:30
品牌 Logo 应用领域
急速微 - ALLEGRO 驱动器
页数 文件大小 规格书
13页 350K
描述
Stepper Motor Controller, 2A, NMOS, PDSO24, 1.20 MM HEIGHT, LEAD FREE, MO-153ADT, TSSOP-24

A3984SLPT-T 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:TSSOP包装说明:HTSSOP, TSSOP24,.25
针数:24Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.73模拟集成电路 - 其他类型:STEPPER MOTOR CONTROLLER
JESD-30 代码:R-PDSO-G24JESD-609代码:e3
长度:7.8 mm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:HTSSOP
封装等效代码:TSSOP24,.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:3.3/5,35 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: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 mmBase Number Matches:1

A3984SLPT-T 数据手册

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A3984  
DMOS Microstepping Driver with Translator  
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.  
Package LP  
GND  
24  
CP1  
CP2  
1
2
ENABLE  
23  
OUT2B  
VCP  
3
22  
The translator is the key to the easy implementation of the A3984.  
VBB2  
VREG  
MS1  
Simply inputting one pulse on the STEP input drives the motor one  
microstep. There are no phase sequence tables, high frequency control  
4
21  
SENSE2  
20  
5
lines, or complex interfaces to program. The A3984 interface is an ideal  
fit for applications where a complex microprocessor is unavailable or is  
overburdened.  
MS2  
OUT2A  
OUT1A  
SENSE1  
VBB1  
6
19  
18  
17  
16  
15  
14  
13  
RESET  
ROSC  
SLEEP  
VDD  
7
8
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 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.  
9
OUT1B  
DIR  
10  
11  
12  
STEP  
REF  
GND  
Approximate Scale 1:1  
Internal synchronous rectification control circuitry is provided to  
improve power dissipation during PWM operation.  
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 A3984 is supplied in a low-profile (1.2 mm maximum), 24-pin  
TSSOP with exposed thermal pad (package LP). 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 Pb-free  
Package  
Description  
A3984SLP  
24-pin, TSSOP  
Exposed thermal pad  
A3984SLP-T  
Yes  
26184.30A  

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