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A3972SB PDF预览

A3972SB

更新时间: 2024-01-24 06:36:40
品牌 Logo 应用领域
急速微 - ALLEGRO 驱动器运动控制电子器件信号电路光电二极管电动机控制电机
页数 文件大小 规格书
12页 190K
描述
DUAL DMOS FULL-BRIDGE MICROSTEPPING PWM MOTOR DRIVER

A3972SB 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:DIP
包装说明:DIP, DIP24,.3针数:24
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.81
其他特性:ALSO REQUIRES 15V TO 50V VBB SUPPLY模拟集成电路 - 其他类型:BRUSH DC MOTOR CONTROLLER
JESD-30 代码:R-PDIP-T24JESD-609代码:e3
长度:30.099 mm功能数量:2
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:1.5 A
封装主体材料:PLASTIC/EPOXY封装代码:DIP
封装等效代码:DIP24,.3封装形状:RECTANGULAR
封装形式:IN-LINE峰值回流温度(摄氏度):NOT SPECIFIED
电源:5 V认证状态:Not Qualified
座面最大高度:5.33 mm子类别:Motion Control Electronics
最大供电电流 (Isup):12 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:NO技术:MOS
温度等级:OTHER端子面层:Matte Tin (Sn)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.62 mmBase Number Matches:1

A3972SB 数据手册

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3972  
DUAL DMOS FULL-BRIDGE MICRO-  
STEPPING PWM MOTOR DRIVER  
Designed for pulse-width modulated (PWM) current control of  
bipolar microstepping stepper motors, the A3972SB is capable of  
continuous output currents to 1.5 A and operating voltages to 50 V.  
Internal fixed off-time PWM current-control timing circuitry can be  
programmed via a serial interface to operate in slow, fast, and mixed  
current-decay modes.  
VCP  
CP1  
CP2  
OSC  
23 SLEEP  
24  
1
2
3
4
VREG  
22  
OUT1B  
LOAD  
21 OUT2B  
The desired load-current level is set via the serial port with two 6-bit  
linear DACs in conjunction with a reference voltage. The six bits of  
control allow maximum flexibility in torque control for a variety of step  
methods, from microstepping to full-step drive. Load current is set in  
1.56% increments of the maximum value.  
LOAD  
SUPPLY  
20  
5
6
7
8
SUPPLY  
1
V
BB1  
V
BB2  
2
19  
18  
GROUND  
GROUND  
GROUND  
GROUND  
SENSE  
1
SENSE  
2
Synchronous rectification circuitry allows the load current to flow  
through the low rDS(on) of the DMOS output driver during the current  
decay. This feature will eliminate the need for external clamp diodes in  
most applications, saving cost and external component count, while  
minimizing power dissipation.  
17  
16  
9
OUT2A  
LOGIC  
OUT1A  
STROBE  
VDD  
15  
14  
13  
10  
11  
SUPPLY  
MUX  
CLOCK  
Internal circuit protection includes thermal shutdown with hyster-  
esis, transient-suppression diodes, and crossover-current protection.  
Special power-up sequencing is not required.  
REF  
DATA 12  
Dwg. PP-069-3  
The A3972SB is supplied in a 24-lead plastic DIP with a copper  
batwing power tab (suffix ‘B’). The power tab is at ground potential and  
needs no electrical isolation.  
ABSOLUTE MAXIMUM RATINGS  
at TA = +25°C  
Load Supply Voltage, VBB ................ 50 V  
Output Current, IOUT ...................... 1.5 A  
Logic Supply Voltage, VDD .............. 7.0 V  
Logic Input Voltage Range,  
VIN ................ -0.3 V to VDD + 0.3 V  
Reference Voltage, VREF ..................... 3 V  
Sense Voltage (dc), VS ................ 500 mV  
Package Power Dissipation,  
PD .......................................... 3.1 W  
Operating Temperature Range,  
TA .......................... -20°C to +85°C  
Junction Temperature, TJ ............. +150°C  
Storage Temperature Range,  
FEATURES  
I
1.5 A, 50 V Continuous Output Rating  
I Low rDS(on) DMOS Output Drivers  
I Optimized Microstepping via 6-Bit Linear DACs  
I Programmable Mixed, Fast, and Slow Current-Decay Modes  
I 4 MHz Internal Oscillator for Digital Timing  
I Serial-Interface Controls Chip Functions  
I Synchronous Rectification for Low Power Dissipation  
I Internal UVLO and Thermal Shutdown Circuitry  
I Crossover-Current Protection  
TS ......................... -55°C to +150°C  
I Precision 2 V Reference  
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 tempera-  
ture of 150°C.  
I Inputs Compatible with 3.3 V or 5 V Control Signals  
I Sleep and Idle Modes  
Always order by complete part number: A3972SB .  

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