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MIC2019YML Datasheet(PDF) 9 Page - Micrel Semiconductor |
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MIC2019YML Datasheet(HTML) 9 Page - Micrel Semiconductor |
9 / 30 page Micrel, Inc. MIC20xx Family August 2011 9 M9999-080211-D Descriptions These pin and signal descriptions aid in the differentiation of a pin from electrical signals and components connected to that pin. For example, VOUT is the switch’s output pin, while VOUT is the electrical signal output voltage present at the VOUT pin. Pin Descriptions Pin Name Type Description VIN Input Supply input. This pin provides power to both the output switch and the switch’s internal control circuitry. GND ─ Ground. EN Input Switch Enable (Input): FAULT/ Output Fault status. A logic LOW on this pin indicates the switch is in current limiting, or has been shut down by the thermal protection circuit. This is an open-drain output allowing logical OR’ing of multiple switches. CSLEW Input Slew rate control. Adding a small value capacitor between this pin and VIN slows turn-ON of the power FET. VOUT Output Switch output. The load being driven by the switch is connected to this pin. VUVLO Input Variable Under Voltage Lockout (VUVLO): Monitors the input voltage through a resistor divider between VIN and GND. Shuts the switch off if voltage falls below the threshold set by the resistor divider. Previously called VUVLO. ILIMIT Input Set current limit threshold via a resistor connected from ILIMIT to GND. EP Thermal On MLF packages connect EP to GND. Signal Descriptions Signal Name Type Description VIN Input Electrical signal input voltage present at the VIN pin. GND ─ Ground. VEN Input Electrical signal input voltage present at the ENABLE pin. VFAULT/ Output Electrical signal output voltage present at the FAULT/ pin. CSLEW Component Capacitance value connected to the CSLEW pin. VOUT Output Electrical signal output voltage present at the VOUT pin. VVUVLO_TH Internal VUVLO internal reference threshold voltage. This voltage is compared to the VUVLO pin input voltage to determine if the switch should be disabled. Reference threshold voltage has a typical value of 250mV. CLOAD Component Capacitance value connected in parallel with the load. Load capacitance. IOUT Output Electrical signal output current present at the VOUT pin. ILIMIT Internal Switch’s current limit. Fixed at factory or user adjustable. |
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