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A3962 PDF预览

A3962

更新时间: 2024-02-27 09:20:21
品牌 Logo 应用领域
急速微 - ALLEGRO 驱动器
页数 文件大小 规格书
8页 88K
描述
DUAL FULL-BRIDGE PWM MOTOR DRIVER

A3962 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, SOP20,.4
针数:20Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.66Is Samacsys:N
模拟集成电路 - 其他类型:STEPPER MOTOR CONTROLLERJESD-30 代码:R-PDSO-G20
JESD-609代码:e0长度:12.8 mm
功能数量:2端子数量:20
最高工作温度:85 °C最低工作温度:-20 °C
最大输出电流:0.8 A封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP20,.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 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):85 mA
最大供电电压 (Vsup):5.25 V最小供电电压 (Vsup):4.75 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 mm
Base Number Matches:1

A3962 数据手册

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3962  
DUAL FULL-BRIDGE PWM MOTOR DRIVER  
Designed for pulse-width modulated (PWM) current control of  
bipolar stepper motors, the A3962SLB is capable of continuous output  
1
2
20  
19  
18  
OUT  
OUT  
2B  
currents to ±800 mA and operating voltages to 30 V. Internal fixed  
off-time PWM current-control circuitry can be used to regulate the  
maximum load current to a desired value. An internal precision voltage  
reference is provided to improve motor peak-current control accuracy.  
The peak load current limit is set by the user’s selection of an external  
resistor divider and current-sensing resistors.  
1B  
1
2
SENSE  
SENSE  
OUT  
2
1
3
4
5
OUT  
2A  
1A  
V
BB  
LOAD  
SUPPLY  
LOGIC  
SUPPLY  
V
17  
16  
15  
14  
13  
CC  
GROUND  
GROUND  
GROUND  
The fixed off-time pulse duration is set by user-selected external  
RC timing networks. The capacitor in the RC timing network also  
determines a user-selectable blanking window that prevents false  
triggering of the PWM current control circuitry during switching transi-  
tions. This eliminates the need for two external RC filter networks on  
the current-sensing comparator inputs.  
6
7
GROUND  
V
V
REF(IN)  
REF(OUT)  
8
RC  
RC  
2
1
θ
12 PHASE  
9
θ
PHASE  
2
1
2
1
1
11  
ENABLE  
10  
ENABLE  
2
For each bridge the PHASE input controls load current polarity by  
selecting the appropriate source and sink driver pair. For each bridge  
the ENABLE input, when held high, disables the output drivers. Spe-  
cial power-up sequencing is not required. Internal circuit protection  
includes thermal shutdown with hysteresis, transient-suppression  
diodes, and crossover-current protection.  
Dwg. PP-047-1  
ABSOLUTE MAXIMUM RATINGS  
Load Supply Voltage, VBB . . . . . . . . . 30 V  
Output Current, IOUT . . . . . . . . . . ±800 mA*  
Logic Supply Voltage, VCC . . . . . . . . . 7.0 V  
The A3962SLB is supplied in a 20-lead plastic SOIC with copper  
heat sink tabs. The power tab is at ground potential and needs no  
electrical isolation.  
Logic Input Voltage Range,  
VIN . . . . . . . . . . . -0.3 V to VCC + 0.3 V  
Sense Voltage, VSENSE . . . . . . . . . . . . 1.0 V  
FEATURES  
Reference Output Current,  
±800 mA Continuous Output Current Rating  
30 V Output Voltage Rating  
IREF OUT . . . . . . . . . . . . . . . . . . . 1.0 mA  
Package Power Dissipation,  
Internal PWM Current Control, Saturated Sink Drivers  
Internally Generated Precision 2.5 V Reference  
Internal Transient-Suppression Diodes  
Internal Thermal-Shutdown Circuitry  
Crossover-Current Protection, UVLO Protection  
Automotive Capable  
PD . . . . . . . . . . . . . . . . . . . . See Graph  
Operating Temperature Range,  
TA . . . . . . . . . . . . . . . . -20˚C to +85˚C  
Junction Temperature, TJ . . . . . . . +150˚C†  
Storage Temperature Range,  
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 tempera  
ture of 150˚C.  
† Fault conditions that produce excessive junction  
temperature will activate the device’s thermal  
shutdown circuitry. These conditions can be  
tolerated but should be avoided.  
Always order by complete part number: A3962SLB .  

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