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FAN5193 датащи(PDF) 2 Page - Fairchild Semiconductor |
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FAN5193 датащи(HTML) 2 Page - Fairchild Semiconductor |
2 / 21 page FAN5193 PRODUCT SPECIFICATION 2 REV. 1.0.1 2/4/02 Pin Assignments Pin Definitions Pin Number Pin Name Pin Function Description 1-5 VID0-4 Voltage Identification Code Inputs. These open collector/TTL compatible inputs will program the output voltage over the ranges specified in Table 1. 6 BYPASS 5V Rail. Bypass this pin with a 1 µF ceramic capacitor to AGND. 7 AGND Analog Ground. Return path for low power analog circuitry. This pin should be connected to a low impedance system ground plane to minimize ground loops. 8 LDRVB Low Side FET Driver for B. Connect this pin to the gate of an N-channel MOSFET for synchronous operation. The trace from this pin to the MOSFET gate should be <0.5". 9 PGNDB Power Ground B. Return pin for high currents flowing in low-side MOSFET. Connect directly to low-side MOSFET source. 10 SWB High side driver source and low side driver drain switching node B. Gate drive return for high side MOSFET, and negative input for low-side MOSFET current sense. 11 HDRVB High Side FET Driver B. Connect this pin to the gate of an N-channel MOSFET. The trace from this pin to the MOSFET gate should be <0.5". 12 BOOTB Bootstrap B. Input supply for high-side MOSFET. 13 BOOTA Bootstrap A. Input supply for high-side MOSFET. 14 HDRVA High Side FET Driver A. Connect this pin to the gate of an N-channel MOSFET. The trace from this pin to the MOSFET gate should be <0.5". 15 SWA High side driver source and low side driver drain switching node A. Gate drive return for high side MOSFET, and negative input for low-side MOSFET current sense. 16 PGNDA Power Ground A. Return pin for high currents flowing in low-side MOSFET. Connect directly to low-side MOSFET source. 17 LDRVA Low Side FET Driver for A. Connect this pin to the gate of an N-channel MOSFET for synchronous operation. The trace from this pin to the MOSFET gate should be <0.5". 18 VCC VCC. Internal IC supply. Connect to system 12V supply, and decouple with a 0.1 µF ceramic capacitor. 19 PWRGD Power Good Flag. An open collector output that will be logic LOW if the output voltage is not within +10/-15% of the nominal output voltage setpoint. 20 ILIM Current Limit. A resistor from this pin to ground sets the over current trip level. FAN5093 VID0 VID1 VID2 VID3 VID4 AGND BYPASS LDRVB PGNDB SWB HDRVB BOOTB VFB RT ENABLE/SS DROOP/E* ILIM PWRGD VCC LDRVA PGNDA SWA HDRVA BOOTA 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 |
Аналогичный номер детали - FAN5193 |
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Аналогичное описание - FAN5193 |
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