数据表 (LM3431EVAL/NOPB)目录FEATURES1APPLICATIONS1DESCRIPTION1TYPICAL APPLICATION CIRCUIT1CONNECTION DIAGRAM2ABSOLUTE MAXIMUM RATINGS3RECOMMENDED OPERATING CONDITIONS3ELECTRICAL CHARACTERISTICS4TYPICAL PERFORMANCE CHARACTERISTICS6BLOCK DIAGRAM8OPERATION DESCRIPTION10BOOST CONTROLLER10ENABLE and UVLO10Soft-Start11Output Voltage, OVP, and SH11Switching Frequency12Inductor Selection12Current Sensing14Current Limit14VCC15Diode Selection15NFET Selection15Input Capacitor Selection16Output Capacitor Selection16Compensation16LED CURRENT REGULATOR19Setting LED Current19NDRV19CFB and SC Diodes19Dimming20Setting FF21LED Protection22Fault Modes and Fault Delay22Fault Shutdown and Automatic Restart23Open LED24Shorted LED24Shorted Cathode25Thermal Considerations25THM25TSD26Temperature Coefficients27LEDOFF: Adding Additional channels27LED Current Accuracy27PCB Layout28Revision History30文件大小: 1.6 MB页数: 36Language: English打开用户手册