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LM9074M/NOPB датащи(PDF) 6 Page - Texas Instruments |
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LM9074M/NOPB датащи(HTML) 6 Page - Texas Instruments |
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6 / 12 page ![]() ON/OFF, Keep-Alive and Safety Latch-Off Control Diagrams (Continued) Switch ON with ON/OFF input; Keep output biased with Keep-Alive; Hold ouput ON with ON/OFF; Turn OFF with ON/OFF input. (Temporary Keep-Alive Mode) 10130520 Safety Latch OFF of V OUT when in Keep-Alive Mode (ON/OFF going high required to turn Output back ON) 10130521 Control Logic Truth Table ON/OFF Input Keep-Alive Input Output Voltage Reset Output Operating Condition L X 0V L Low quiescent current standby (OFF) condition ↑ X5V ↑ after delay Output turns ON H X 5V H Normal ON condition ↓ H 0V L Output turns OFF ↓ L 5V H Output kept ON by Keep-Alive Input ↑ L 5V H Output remains ON (or turns ON) HX ∆V OUT ≥ −300 mV L Output pulled out of regulation, reset flag generated LL V OUT ≤ 4V L Output latches OFF www.national.com 5 |
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