L6758A datasheet(10/42 Pages) STMICROELECTRONICS

10 / 42 page

Pin description and connection diagrams

L6758A

10/42

DocID023298 Rev 2

SVR_RDY

VR ready. Open drain output set free after SS has finished in single-phase

section and pulled low when triggering any protection. Pull up to a voltage

lower than 3.3 V (typ.), if not used it can be left floating.

CS4P

Channel 4 current sense positive input.

Connect through an R-C filter to the phase-side of the channel 4 inductor.

When working at 2 or 3 phases, short to the regulated voltage.

CS4N

Channel 4 current sense negative input.

Connect through an Rg resistor to the output-side of the channel inductor.

When working at 2 or 3 phases, still connect through Rg to CS4+ and then

to the regulated voltage. Filter the output-side of Rg with 100 nF (typ.) to

GND.

CS2P

Channel 2 current sense positive input.

Connect through an R-C filter to the phase-side of the channel 2 inductor.

CS2N

Channel 2 current sense negative input.

Connect through an Rg resistor to the output-side of the channel inductor.

Filter the output-side of Rg with 100 nF (typ.) to GND.

CS3P

Channel 3 current sense positive input.

Connect through an R-C filter to the phase-side of the channel 3 inductor.

When working at 2 phases, short to the regulated voltage.

CS3N

Channel 3 current sense negative input.

Connect through an Rg resistor to the output-side of the channel inductor.

When working at 2 phases, still connect through Rg to CS3P and then to

the regulated voltage. Filter the output-side of Rg with 100 nF (typ.) to

GND.

CS1P

Channel 1 current sense positive input.

Connect through an R-C filter to the phase-side of the channel 1 inductor.

CS1N

Channel 1 current sense negative input.

Connect through an Rg resistor to the output-side of the channel inductor.

Filter the output-side of Rg with 100 nF (typ.) to GND.

PAD

GND

GND connection. All internal references and logic are referenced to this

pin. Filter to VCC with proper MLCC capacitor and connect to the PCB

GND plane.

Table 2. Pin description (continued)

Pin#

Name

Function

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