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MAX15004AAUE Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX15004AAUE Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 27 page 4.5V to 40V Input Automotive Flyback/Boost/SEPIC Power-Supply Controllers _______________________________________________________________________________________ 9 Pin Description PIN NAME FUNCTION 1 IN Input Power Supply. Bypass IN with a minimum 0.1µF ceramic capacitor to PGND. 2 ON/ OFF ON/ OFF Input. Connect ON/OFF to IN for always-on operation. To externally program the UVLO threshold of the IN supply, connect a resistive divider between IN, ON/ OFF, and SGND. Pull ON/OFF to SGND to disable the controller. 3 OVI Overvoltage Comparator Input. Connect a resistive divider between the output of the power supply, OVI, and SGND to set the output overvoltage threshold. 4 SLOPE Programmable Slope Compensation Capacitor Input. Connect a capacitor (CSLOPE) to SGND to set the amount of slope compensation. Slope compensation = (2.5 x 10 -9) / CSLOPE mV/µs with CSLOPE in farads. 5 N.C. No Connection. Not internally connected. 6 RTCT Oscillator-Timing Network Input. Connect a resistor from RTCT to REG5 and a capacitor from RTCT to SGND to set the oscillator frequency (see the Oscillator Frequency/External Synchronization section). 7 SGND Signal Ground. Connect SGND to SGND plane. 8 SYNC External-Clock Synchronization Input. Connect SYNC to SGND when not using an external clock. 9 SS Soft-Start Capacitor Input. Connect a capacitor from SS to SGND to set the soft-start time interval. 10 FB Internal Error-Amplifier Inverting Input. The noninverting input is internally connected to SS. 11 COMP Error-Amplifier Output. Connect the frequency compensation network between FB and COMP. 12 CS Current-Sense Input. The current-sense signal is compared to a signal proportional to the error-amplifier output voltage. 13 REG5 5V Low-Dropout Regulator Output. Bypass REG5 with a 1µF ceramic capacitor to SGND. 14 PGND Power Ground. Connect PGND to the power ground plane. 15 OUT Gate Driver Output. Connect OUT to the gate of the external n-channel MOSFET. 16 VCC 7.4V Low-Dropout Regulator Output—Driver Power Source. Bypass VCC with 0.1µF and 1µF or higher ceramic capacitors to PGND. —EP Exposed Pad (MAX15004A/MAX15005A only). Connect EP to the SGND plane to improve thermal performance. Do not use the EP as an electrical connection. |
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