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MC34280FTBR2 bảng dữ liệu(PDF) 5 Page - ON Semiconductor |
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MC34280FTBR2 bảng dữ liệu(HTML) 5 Page - ON Semiconductor |
5 / 20 page MC34280 http://onsemi.com 5 PIN FUNCTION DESCRIPTION Pin No. Function Type/Direction Description 1 VMAINFB Analog / Input Feedback pin for VMAIN 2 VBAT Power Main battery supply 3 ENABLE CMOS / Input Chip enable, Active high, ENABLE activates VMAIN after battery plug in, ENABLE is inactive after VMAIN is on 4 VDD Analog / Output Connect to decoupling capacitor for internal logic supply 5 PDELAY Analog / Input Capacitor connection for defining Power–On signal delay 6 VREF Analog / Output Bandgap Reference output voltage. Nominal voltage is 1.25V 7 AGND Analog Ground 8 IREF Analog / Input Resistor connection for defining internal current bias and PDELAY current 9 LOWBATSEN Analog / Input Resistive network connection for defining low battery detect threshold 10 DGND Digital Ground 11 PORB CMOS / Output Active LOW Power–On reset signal 12 LOWBATB CMOS / Output Active LOW low battery detect output 13 LIBATON CMOS / Input microprocessor control signal for Lithium battery backup switch, the switch is ON when LIBATON=HIGH and LIBATCL=HIGH 14 LIBATCL CMOS / Input microprocessor control signal for Lithium battery backup switch, if it is HIGH, the switch is controlled by LIBATON, otherwise, controlled by internal logic 15 VAUXADJ CMOS / Input microprocessor control signal for VAUX voltage control 16 VAUXCON CMOS / Input microprocessor control signal for VAUX voltage control 17 VAUXEN CMOS / Input VAUX enable, Active high 18 VAUXFBP Analog / Input Feedback pin for VAUX 19 VAUXREF Analog / Output Reference Voltage for VAUX voltage level 20 VAUXFBN Analog / Input Feedback pin for VAUX 21 VAUXBDV Power VAUX BJT base drive circuit power supply 22 VAUXCHG Analog / Output test pin 23 VAUXBASE Analog / Output test pin 24 NC no connection 25 VAUXSW Analog / Output Collector output of the VAUX power BJT 26 VAUXEMR Analog / Output Emitter output of the VAUX power BJT 27 LIBATIN Analog / Input Lithium battery input for backup purposes 28 LIBATOUT Analog / Output Lithium battery output 29 NC no connection 30 VMAINGND Power Ground Ground for VMAIN low side switch 31 VMAINSW Analog / Input VMAIN inductor connection 32 VMAIN Analog / Output VMAIN output |
Số phần tương tự - MC34280FTBR2 |
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Mô tả tương tự - MC34280FTBR2 |
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