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MIC2549A-1YN Datasheet(PDF) 3 Page - Micrel Semiconductor |
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MIC2549A-1YN Datasheet(HTML) 3 Page - Micrel Semiconductor |
3 / 16 page April 2004 3 M9999-041204 MIC2545A/2549A Micrel Pin Description Pin Number Pin Number Pin Name Pin Function SOP, DIP TSSOP 1 1 EN Enable (Input): Logic-compatible enable input (-1 version is active high, -2 version is active low). High input >1.8V typical; low input <1.4V typical. Do not float. MIC2549A only: Also resets thermal shutdown latch. 2 3 FLG Fault Flag (Output): Active-low, open-drain output. Indicates overcurrent or thermal shutdown. MIC2549A only: Latched low on thermal shutdown. 3 5 GND Ground: Supply return. 4 7 ILIM Current Limit: Sets current limit threshold using an external resistor (R SET) connected to ground. 76.8 Ω < R SET < 459Ω. 5, 7 8, 12 IN Supply Input: Output MOSFET drain. Also powers internal circuitry. Both IN pins must be externally connected together. 6, 8 10, 14 OUT Switch Output: Output MOSFET source. Both OUT pins must be externally connected together. 2,4,6,9,11,13 NC Not internally connected |
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