LMD18201中文.docVIP

LMD18201 3A, 55V H-Bridge General Description The LMD18201 is a 3A H-Bridge designed for motion control applications.LMD18201是3A的H桥设计为运动控制应用。The device is built using a multi-technology process which combines bipolar and CMOS control circuitry with DMOS power devices on the same monolithic structure.该设备是使用多技术的过程中，结合了双极型和CMOS控制电路和DMOS功率器件在同一单片结构。The H-Bridge configuration is ideal for driving DC and stepper motors.H桥驱动直流和步进电机的配置是理想的。The LMD18201 accommodates peak output currents up to 6A.LMD18201可容纳峰值输出电流高达6A。Current sensing can be achieved via a small sense resistor connected in series with the power ground lead.电流感应可以实现通过一个小的检测电阻串联在电源的地线。For current sensing without disturbing the path of current to the load, the LMD18200 is recommended.进行电流检测，而不会干扰到负载的电流的路径，在LMD18200建议。 Features n Delivers up to 3A continuous output???提供高达3A的连续输出 n Operates at supply voltages up to 55V???工作在电源电压高达55V n Low RDS(ON) typically 0.33Ω per switchn低RDS（ON）通常每个开关0.33Ω n TTL and CMOS compatible inputs???TTL和CMOS兼容输入 n No “shoot-through” currentn无“直通”当前 Thermal warning flag output at 145°C热警告标志输出在145℃ n Thermal shutdown (outputs off) at 170°Cn热关断（输出关闭），在170℃ n Internal clamp diodesn内部钳位二极管 n Shorted load protection???负载短路保护 n Internal charge pump with external bootstrap capabilityn内部电荷泵外部自举功能 Applications n DC and stepper motor drives n Position and velocity servomechanisms n Factory automation robots n Numerically controlled machinery n Computer printers and plotters n直流和步进电机驱动器 N位置和速度伺服 N工厂自动化机器人 ???数控机械 N计算机打印机和绘图仪 Functional Diagram FIGURE 1. Functional Block Diagram of LMD18201 Connection Diagram and Ordering Information Top View Order Number LMD18201T See NS Package Number TA11B Absolute Maximum Ratings (Note 1)绝对最大额定值（注1） If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/Distributors for availability and specifications. 如果军事/航空航天指定的设备是必需的，请联系国家半导体销售办事处/分销商的可用性和规格。 Total Supply Voltage (VS, Pin 6) 60V Voltage at Pins 3, 4, 5 an