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MIC2040-1BMM Datasheet(PDF) 2 Page - Micrel Semiconductor |
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MIC2040-1BMM Datasheet(HTML) 2 Page - Micrel Semiconductor |
2 / 15 page MIC2040/2041 Micrel M9999-012004 2 January 2005 Pin Configuration ILIM VBIAS 6 5 1 EN /FAULT UVLOIN GND 10 VOUT VIN VOUT VIN 9 8 7 2 3 4 MIC2040/MIC2041 10-Pin MSOP (MM) Pin Description Pin Number Pin Name Pin Function 1EN Switch Enable Input: Gate control pin of the output MOSFET available as an active high (–1) or active low (–2) input signal. 2 /FAULT Fault Status Output: Open drain N-Channel device, active low. This pin indicates an overcurrent, or thermal shutdown condition. For an overcurrent event, /FAULT is asserted if the duration of the overcurrent condition lasts longer than 28ms. 4 GND Ground Connection: Tie to analog ground. 5 ILIM Current Limit Set: A resistor, R SET, connected to this pin sets the current limit threshold as CLF/R SET, where CLF is the current limit factor specified in the electrical characteristics table. For the MIC2040/41, the continuous output current range is 0.25A to 1.5A. 7, 9 VIN Switch Input Supply: The drain of the output MOSFET. The range of input for the switch is 0.8V to 5.5V. These pins must be externally connected together. 8, 10 VOUT Switch Output: The source of the output MOSFET. These pins must be externally connected together. 6 VBIAS Bias Supply Input: This input pin supplies bias to operate the switch with range from 1.6V to 5.5V. When switching voltage (V IN) is between 1.6V to 5.5V and the use of a single supply is desired, connect VBIAS to VIN externally. 3 UVLOIN Undervoltage Lockout Adjust Input: With this pin left open, the UVLO threshold is internally set to 1.45V. When the switching voltage (V IN) is at or below 1.6V, connecting an external resistive divider to this input will lower the UVLO threshold. The total resistance must be less than 200kΩ. See “Applications Information” for further detail. |
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