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A3957SLBTR PDF预览

A3957SLBTR

更新时间： 2024-11-30 21:14:59
品牌 Logo 应用领域
急速微 - ALLEGRO 电动机控制光电二极管
页数 文件大小 规格书
14页 200K
描述
Stepper Motor Controller, 1.5A, BIPolar, PDSO22, BATWING, PLASTIC, SOIC-24

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中文翻译

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A3957SLBTR 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：SOIC包装说明：SOP, SOP24,.4
针数：24Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.86模拟集成电路 - 其他类型：STEPPER MOTOR CONTROLLER
JESD-30 代码：R-PDSO-G22JESD-609代码：e0
长度：15.4 mm功能数量：1
端子数量：22最高工作温度：85 °C
最低工作温度：-20 °C最大输出电流：1.5 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）：NOT SPECIFIED
电源：5,5/50 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)：50 mA最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：4.5 V标称供电电压 (Vsup)：5 V
表面贴装：YES技术：BIPOLAR
温度等级：OTHER端子面层：Tin/Lead (Sn/Pb)
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：NOT SPECIFIED
宽度：7.5 mmBase Number Matches：1

A3957SLBTR 数据手册

 浏览型号A3957SLBTR的Datasheet PDF文件第2页浏览型号A3957SLBTR的Datasheet PDF文件第3页浏览型号A3957SLBTR的Datasheet PDF文件第4页浏览型号A3957SLBTR的Datasheet PDF文件第5页浏览型号A3957SLBTR的Datasheet PDF文件第6页浏览型号A3957SLBTR的Datasheet PDF文件第7页 
3957  
FULL-BRIDGE PWM  
MICROSTEPPING MOTOR DRIVER  
The A3957SLB is designed for driving one winding of a bipolar stepper  
motor in a microstepping mode. The outputs are rated for continuous output  
currents to ±1.5 A and operating voltages to 50 V. Internal pulse-width  
modulated (PWM) current control combined with an internal four-bit nonlin-  
ear digital-to-analog converter allows the motor current to be controlled in  
full-, half-, quarter-, eighth-, or sixteenth-step (microstepping) modes.  
Nonlinear increments minimize the number of control lines necessary for  
microstepping. Microstepping provides for increased step resolution, and  
reduces torque variations and resonance problems at low speed.  
NO  
CONNECT  
NO  
CONNECT  
1
2
3
4
NC  
NC  
NC 24  
23  
V
BB  
LOAD  
SUPPLY  
PFD  
REF  
22  
OUT  
B
NO  
CONNECT  
NO  
CONNECT  
NC 21  
RC  
GROUND  
GROUND  
5
6
20  
D
0
19 GROUND  
18 GROUND  
LOGIC  
Internal circuitry determines whether the PWM current-control circuitry  
operates in a slow (recirculating) current-decay mode, fast (regenerative)  
current-decay mode, or in a mixed current-decay mode in which the off time  
is divided into a period of fast current decay with the remainder of the fixed  
off time spent in slow current decay. The combination of user-selectable  
current-sensing resistor and reference voltage, digitally selected output  
current ratio; and slow, fast, or mixed current-decay modes provides users  
with a broad, variable range of motor control.  
7
8
9
17  
SENSE  
D
3
NO  
CONNECT  
LOGIC  
SUPPLY  
V
NC 16  
CC  
PHASE 10  
15 OUT  
A
NO  
CONNECT  
11  
12  
D
NC  
14  
13  
2
NO  
CONNECT  
NC  
D
1
Internal circuit protection includes thermal shutdown with hysteresis,  
transient-suppression diodes, and crossover current protection. Special  
power-up sequencing is not required.  
Dwg. PP-056-4  
ABSOLUTE MAXIMUM RATINGS  
The A3957SLB is supplied in a 24-lead plastic SOIC with copper heat-  
sink tabs. The power tab is at ground potential and needs no electrical  
isolation.  
Load Supply Voltage, VBB . . . . . . . . . 50 V  
Output Current, IOUT  
(Continuous) . . . . . . . . . . . . . ±1.5 A*  
Logic Supply Voltage, VCC . . . . . . . 7.0 V  
Logic/Reference Input Voltage Range,  
VIN . . . . . . . . . . -0.3 V to VCC + 0.3 V  
Sense Voltage, VS . . . . . . . . . . . . . . . 1.0 V  
Package Power Dissipation (TA = 25°C),  
PD . . . . . . . . . . . . . . . . . . . . . . 2.23 W†  
Operating Temperature Range,  
FEATURES  
■ ±1.5 A Continuous Output Current  
■ 50 V Output Voltage Rating  
■ Internal PWM Current Control  
■ 4-Bit Non-Linear DAC for 16-Bit Microstepping  
■ Satlington™ Sink Drivers  
TA . . . . . . . . . . . . . . . -20˚C to +85˚C  
Junction Temperature, TJ . . . . . . . . +150˚C  
Storage Temperature Range,  
■ Fast, Mixed Fast/Slow, and Slow Current-Decay Modes  
■ Internal Transient-Suppression Diodes  
■ Internal Thermal-Shutdown Circuitry  
■ Crossover-Current and UVLO Protection  
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.  
Always order by complete part number:  
† Per SEMI G42-88 Specification, Thermal Test  
Board Standardization for Measuring Junction-  
to-Ambient Thermal Resistance of Semiconductor  
Packages..  
Part Number  
Package  
RθJA  
RθJC  
RθJT  
A3957SLB  
24-lead batwing SOIC  
56°C/W  
—
6°C/W  
1234567...14

中文翻译

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