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ERJ-3EKF7501V Datasheet(PDF) 4 Page - International Rectifier |
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ERJ-3EKF7501V Datasheet(HTML) 4 Page - International Rectifier |
4 / 51 page IR3892 4 www.irf.com © 2013 International Rectifier August 02, 2013 PIN DESCRIPTIONS PIN # PIN NAME PIN DESCRIPTION 1, 9 Vsns 1/2 Sense pins for over-voltage protection and PGood. A resistor divider with the same ratio as the respective feedback resistor divider should be connected between each Vsns pin and its respective Vout. 2, 8 EN 1/2 Enable pins for turning on and off the regulator. 3 Vin Input voltage for Internal LDO. A 1.0µF capacitor should be connected between this pin and PGnd. If external supply is connected to VCC pin, this pin should be shorted to VCC pin. 4 VCC/LDO_out Input Bias Voltage, output of the internal LDO. Place a minimum 2.2µF cap from this pin to PGnd. 5 GND Signal ground for internal reference and control circuitry. 6 Seq Input to error amplifier for sequencing purposes. Can be left floating for non-sequencing applications. It is only connected to the Error-Amplifier of channel 2. 7 Rt/Sync Multi-function pin to set switching frequency. Use an external resistor from this pin to Gnd to set the free-running switching frequency. Or use an external clock signal to connect to this pin through a diode, the device’s switching frequency is synchronized with the external clock. 10, 31 FB 2/1 Inverting inputs to the error amplifiers. These pins are connected directly to the outputs of the regulator via resistor dividers to set the output voltages and provide feedback to the error amplifiers. 11, 30 Comp 2/1 Output of the error amplifiers. External resistor and capacitor networks are typically connected from these pins to its respective Fb pin to provide loop compensation. 12, 29 PGood 2/1 Power Good status pins are open drain outputs. The pins are typically connected to VCC via pull up resistors. 13, 28 Boot 2/1 Supply voltages for high side drivers, 100nF capacitors should be connected between these pins and their respective SW pin. 14, 15, 26, 27 PVin 2/1 Input voltage for power stage. 16, 17, 18, 23, 24, 25 PGnd 2/1 Power Ground. These pins serve as a separated ground for the MOSFET drivers and should be connected to the system’s power ground plane. 19, 20, 21, 22 SW 2/1 Switch nodes. These pins are connected to the output inductors. |
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