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MIC3231YML Datasheet(PDF) 3 Page - Micrel Semiconductor |
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MIC3231YML Datasheet(HTML) 3 Page - Micrel Semiconductor |
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3 / 20 page  Micrel, Inc. MIC3230/1/2 January 2009 3 M9999-011409-A Pin Configuration IADJ IS 6 5 1 VIN EN PWMD COMP 10 VDD DRV PGND OVP 9 8 7 2 3 4 IADJ IS VIN EN PWMD COMP 1 VDD DRV PGND OVP 2 3 4 5 FS EPAD SYNC/NC 6 8 12 11 10 9 7 1 N/C VIN EN PWMD COMP IADJ FS AGND 16 N/C VDD DRV PGND OVP IS SYNC/NC N/C 15 14 13 12 11 10 9 2 3 4 5 6 7 8 EPAD MSOP-10 (MM) MIC3232 3mmx3mmMLF ®-12L (ML) MIC3230, MIC3231 See Product Option Matrix for selection TSSOP-16 (TSE) MIC3230, MIC3231 See Product Option Matrix for selection Pin Description Pin Number 3x3MLF Pin Number TSSOP-16L Pin Number MSOP-10L Pin Name Pin Function -- 1 -- NC No Connect 1 2 1 VIN Input Voltage (power) 6V to 45V 2 3 2 EN Enable Control (Input). Logic High (≥1.5V) enables the regulator. Logic Low (≤0.4V) shuts down the regulator. Connect a 100kΩ resistor from EN to VIN. 3 4 3 PWMD PWM input. High signal terminates the output power. Low Signal starts up the output power. 4 5 4 COMP Compensation (output): for external compensation 5 6 5 IADJ Feedback (input) 6 7 -- FS Frequency Select (input). Connected to a Resistor to determine the operating frequency -- 8 -- AGND Analog Ground -- 9 -- NC No Connect 7 10 -- SYNC Sync (output). Connect to another MIC3230 to synchronize multiple converters. 8 11 6 IS Current Sense (input). Connected to external current sense resistor which in turn is connected to the source of the external FET as well as an external slope compensation resistor 9 12 7 OVP OVP divider connection (output). Connect the top of the divider string to the output. If the load is disconnected, the output voltage will rise until OVP reaches 1.25V and then will regulate around this point 10 13 8 PGND Power Ground 11 14 9 DRV Drive Output: connect to the gate of external FET (output) 12 15 10 VDD VDD Filter for internal power rail. Do not connect an external load to this pin. Connect 10µF to GND. -- 16 -- NC No Connect -- -- -- EPAD Connect to AGND |
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