PMC公司的Pm25LV010。(512 Kbit / 1 Mbit 3.0 Volt-only, Serial Flash Memory With 25 MHz SPI )适合低功耗和低电压下工作的应用场合;具有完备的数据保护功能。通过设置芯片的状态寄存器,可以将存储空间的高1/4、高1/2或整片写保护。写使能和写禁止指令进一步保护数据。另外还提供WP引脚用于硬件数据保护,以防止对状态寄存器的意外修改
特性 Single Input (PWM and TTL Compatible) High Current Power FET Driver, 1.0A Source/2A Sink Auxiliary Output FET Driver, 0.5A Source/1A Sink Time Delays Between Power and Auxiliary Outputs Independently Programmable from 50ns to 500ns Time Delay or True Zero-Voltage Operation Independently Configurable for Each Output Switching Frequency to 1MHz Typical 50ns Propagation Delays ENBL Pin Activates 220uA Sleep Mode Power Output is Active Low in Sleep Mode Synchronous Rectifier Driver Technical/Catalog Information UC3715N Vendor Texas Instruments Category Integrated Circuits (ICs) Configuration Low-Side Voltage - Supply 7 V ~ 20 V Current - Peak 2A Delay Time 50ns Package / Case 8-DIP (300 mil) Packaging Tube Number of Outputs 2 Input Type PWM Number of Configurations 2 Operating Temperature 0°C ~ 70°C High Side Voltage - Max (Bootstrap) - Drawing Number 296; 4040082; P; 8 Mfr Reel Diamete...
M51996的大概功能1脚:PWM输出晶体管的集电极2脚:PWM输出端,也是内部下拉晶体管的集电极3脚:内部下拉晶体管(保护用与2脚输出反相)的发射极,接与1脚同电源的负极4/13脚:好象是过热保护端,本图接负应是不用此功能5脚:过压保护,大于0.75V时停止PWM输出,本图接负取消此功能6脚:电压反馈端,实际反馈电流在0.6-1.4ma,占空比0-50%7脚:大于2.5V时可降低PWM输出频率,接负取消此功能8脚:内部辅助电源输出,精确的7.8V9脚:软启动端,电压变低时PWM频率可下降,此端接正表明取消该功能10/11/12脚:RC振荡外接回路,三者决定PWM输出的频率,本图约200KHZ14脚:IC电源的负端15脚:过电流检测,大于0.2V时停振,根据串接的取样电阻可算出限制电流16脚:IC的正电源,一般12-30V,本电路16V