L6751B datasheet(8/58 Pages) STMICROELECTRONICS

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Pin description and connection diagram

L6751B

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Doc ID 024028 Rev 1

Pin description and connection diagram

Figure 3.

L6751B pin connections (top view)

2.1

Pin description

PWM3

PWM2

PWM1

PHASE

VR_RDY

GND

CS6N

CS6P

CS5P

CS5N

CS4N

CS4P

CS3P

CS3N

CS2N

CS2P

CS1P

SVDATA

ALERT#

SVCLK

VIN

OSC

STCOMP

STM

ADDR

SMCLK

SMAL#

SMDATA

GND

IMAX/SIMAX

SCOMP

SFB

L6751

AM14833v1

Table 2.

Pin description

Pin#

Name

Type

Function

1PWM3

D(1)

PWM output.

Connect to multi-phase channel 3 external driver PWM input. During nor-

mal operation the device is able to manage HiZ status by setting and hold-

ing the PWMx pin to the predefined fixed voltage. See Table 7 for phase

number programming.

PWM2

PWM output.

Connect to multi-phase external drivers PWM input. These pins are also

used to configure HiZ levels for compatibility with drivers and DrMOS. Dur-

ing normal operation the device is able to manage HiZ status by setting

and holding the PWMx pin to the predefined fixed voltage.

3PWM1

PHASE

Connect through resistor divider to multi-phase channel1 switching node.

n/a

Not internally bonded

VR_RDY

VR Ready. Open drain output set free after SS has finished in multi-phase

section and pulled low when triggering any protection on multi-phase sec-

tion. Pull up to a voltage lower than 3.3 V (typ.), if not used it can be left

floating.

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