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L6996D Datasheet(PDF) 3 Page - STMicroelectronics |
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L6996D Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 26 page 3/26 L6996 PIN FUNCTIONS N Name Description 1,2,3, 23,24 VID4-0 Voltage Identification inputs. VID0 is the LSB and VID4 is the MSB for the DAC (see VID table) 4 CS- This pin is used for both current sensing and to detect overvoltage and undervoltage conditions. 5 CS+ Current sense pin. Overcurrent condition is detected by sensing CS+ to CS- voltage. 6 VCC Supply voltage for analogy blocks. Connect it to 5V bus. 7 GND Signal ground 8 VPROG DAC output voltage. This pin provides the voltage programmed by the DAC. Connect a 10nF capacitor between this pin and GND. 9 VFB+ PWM comparator reference input. Connect this pin to VPROG. An additional external voltage divider between output and VPROG may be used to realize the active droop function. 10 VFB- PWM comparator feedback input, to be connected to the regulated output. By inserting a resistor between this pin and the regulated output, a positive offset can be added to the output voltage. 11 OSC Connect this pin to the battery through a voltage divider in order to provide the voltage feedforward feature. 12 SS Soft start pin. 5 µA constant current charges an external capacitor whose value sets the soft- start time. 13 ILIM An external resistor connected between this pin and GND sets the current limit threshold. 14 SHDN ShutDown input. When connected to GND the device stops working. When high, it enables the IC operation. 15 OVP Open drain output. The pull-down transistor is off either in OV condition or during a VID transition. 16 PGOOD Open drain output. The pull-down transistor is on during soft-start, dynamic transitions and when an output voltage fault occurs. 17 PGND Power Ground. This pin has to be connected close to the low side MOSFET source in order to minimize switching noise. 18 LGATE Lower MOSFET gate driver output. 19 VDR Voltage supply for the low side internal driver. 20 PHASE This pin provides the return path of the high side driver. 21 HGATE High side MOSFET driver output. 22 BOOT Bootstrap capacitor pin. The high side driver is supplied through this pin. |
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