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A3976

更新时间： 2024-01-10 06:29:03
品牌 Logo 应用领域
其他 - ETC 驱动器电机
页数 文件大小 规格书
5页 59K
描述
DUAL FULL BRIDGE PROTECTED MOTOR DRIVER

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A3976 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：SOIC包装说明：BATWING, PLASTIC, SOIC-22/24
针数：22/24Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.82模拟集成电路 - 其他类型：STEPPER MOTOR CONTROLLER
JESD-30 代码：R-PDSO-G22JESD-609代码：e3
长度：15.4 mm湿度敏感等级：3
功能数量：1端子数量：22
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：0.5 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：5,6/25 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：AUTOMOTIVE端子面层：Matte Tin (Sn)
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

A3976 数据手册

 浏览型号A3976的Datasheet PDF文件第1页浏览型号A3976的Datasheet PDF文件第2页浏览型号A3976的Datasheet PDF文件第3页浏览型号A3976的Datasheet PDF文件第4页 
Page 5 of 5  
3976 Dual Protected PWM Motor Driver  
APPLICATION NOTES  
wait for that particular logic state after the short has been  
removed before normal operation is allowed to resume.  
Thermal Protection. Circuitry turns OFF all drivers  
when the junction temperature reaches 170°C typically. It is  
intended only to protect the device from failures due to  
excessive junction temperatures and has a hysteresis of  
approximately 15°C.  
Open Lead Protection. During normal PWM  
operation diagnostic circuitry will look for a minimum  
source current level after a bridge is signalled on.  
Additionally, the diode flyback is monitored on the proper  
output. The logic will signal a fault and disable the outputs if  
it determines that the current is below the minimum level  
AND no flyback is occurring. If the inductive load is too  
large, the current would take too long to reach the minimal  
level and a false open load would be reported. It is  
recommended that the inductive load be less than 38mH.  
Layout. The printed wiring board should use a heavy  
ground plane. For optimum electrical and thermal  
performance, the driver should be soldered directly onto the  
board. The load supply pin, VBB, should be decoupled with  
an electrolytic capacitor (> 47 µF is recommended) placed as  
close to the device as possible.  
Short Circuit Protection. Internal sense resistors in  
series with VBB and ground will trip the fault circuitry if  
greater than 1.1A is detected. To prevent false overcurrent  
events due to reverse recovery spikes of the clamp diodes,  
the current monitor is blanked for 5us after a high side is  
signalled to turn on. If an additional input command follows  
after the initial fault, the selected pair of drivers will pulse on  
for the 5us blanking duration. The short circuit fault will  
remember the input state where the fault occurred and will  
Terminal List  
Pin Name  
VBB  
Pin Description  
24 Lead SOIC  
1
2
3
18,19,6,7  
9
11  
12  
13  
14  
16  
22  
23  
24  
16 Lead DIP  
1
2
3
4,5,12,13  
6
7
8
Motor Supply Voltage  
Control Logic – Bridge 1  
Control Logic – Bridge 1  
Power Ground Return  
Bridge 1 Output  
Diagnostic Output  
Bridge 1 Output  
Bridge 2 Output  
Diagnostic Output  
Bridge 2 Output  
Control Logic – Bridge 2  
Control Logic – Bridge 2  
Logic Supply  
ENABLE1  
PHASE1  
GROUND  
OUT1A  
FAULT1  
OUT1B  
OUT2B  
FAULT2  
OUT2A  
PHASE2  
ENABLE2  
VCC  
9
10  
11  
14  
15  
16  
NC  
No Connect  
3,4,5,8,15,17,20,21  
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