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L6788ATR Datasheet(PDF) 5 Page - STMicroelectronics |
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L6788ATR Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 18 page L6788A Pins description and connection diagram Doc ID 15341 Rev 2 5/18 2 Pins description and connection diagram Figure 3. Pin connection (top view) 2.1 Pin description 31 32 33 34 35 36 37 38 39 40 123456789 10 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 PHASE3 LGATE3 VCC2_DR UGATE2 BOOT2 PHASE2 LGATE2 VCC1_IC LGATE1 PHASE1 FB FBRTN CS3+ CS3- CS2+ CS2- CS1+ CS1- R1 R2 PGND Table 2. Pin description Pin n° Name Description 1BOOT1 Channel 1 HS driver supply. Connect through a capacitor (100 nF typ.) to PHASE1 Needed external bootstrap diode. The device implements Vin detections through this pin. See “vin detection” section for details. A small resistor in series to the boot diode helps in reducing Boot capacitor overcharge (see reference schematic). 2UGATE1 Channel 1 HS driver output. It must be connected to the HS1 MOSFET gate. A small series resistors helps in reducing device-dissipated power. 3POK Power OK Open drain output sets free after soft start has finished and pulled low when triggering any latched protection (OVP, UVP, OCP average). Pull up to a voltage lower than 3.3 V (typ), if not used it can be left floating. 4 SCL Serial BUS clock input. 5 SDA Serial BUS data input. |
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