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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LTC4240IGN 데이터시트(PDF) 14 Page - Linear Technology |
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LTC4240IGN 데이터시트(HTML) 14 Page - Linear Technology |
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14 / 28 page  LTC4240 14 4240f APPLICATIO S I FOR ATIO Table 2. Command Byte Definitions HIGH LOW POWER-UP STATE C7 Don’t care Don’t care N/A C6 Don’t care Don’t care N/A C5 Ignore VEEOUT faults Don’t ignore VEEOUT faults LOW C4 Ignore 12VOUT faults Don’t ignore 12VOUT faults LOW C3 Sets RESETOUT Does not set RESETOUT low LOW C2 Turns OFF/ON to OFF Does not set OFF/ON LOW Overrides OFF/ON pin Does not override OFF/ON pin C1 Turns on LED open drain Does not turn on LED open drain LOW C0 Don’t care Don’t care N/A Figure 1. Send Byte Protocol Figure 2. Send Byte Command Latch and Logic SCL 12 34 5 6 7 8 9 1 2 3 4 5 6 7 8 9 STOP SDA START ACK ACK R/WR=0 ADDR 4 ADDR 3 ADDR 2 ADDR 1 ADDR 0 C5 C4 C3 C2 C1 XX 01 XX XX LATCH COMMAND BYTE ADDRESS BYTE COMMAND BYTE 4240 F01 4240 F02 C3 IS USED TO SET LOCAL_PCI_RST# (RESETOUT). C2 PULLS DOWN THE GATE OF THE EXTERNAL N-CHANNEL SWITCHES. IT ALSO TURNS OFF THE 12VIN AND VEEIN INTERNAL POWER SWITCHES. C3 C2 C1 RESETIN PWRGD OFF/ON GATE RESETOUT RESETOUT LED C1 TURNS ON THE EXTERNAL STATUS LED INDEPENDENT OF RESETOUT. |
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