DFE252012F-R47M datasheet(30/122 Pages) AD

30 / 122 page

Pin Description (continued)

NAME

FUNCTION

TYPE

CFG2

Device Configuration2 Selection Input. Connect a selection resistor (RCFG2)

between CFG2 and AGND to configure the current limits and the switching

frequency. Default settings can be overwritten through I2C. See the Device

Configuration (CFGx) section for more information.

Analog Input

IRQB

Interrupt Output (Active-Low, Open-Drain). A 100kΩ external pull-up resistor to

VIO is required. High impedance when CE = low.

Digital Output

SCL

I2C Serial Interface Clock Input. (High impedance in shutdown mode.) A pull-up

resistor of 1.5kΩ–2.2kΩ to VIO is required. Connect to ground if not used.

Digital Input

SDA

I2C Serial Interface Data I/O (High impedance in shutdown mode.) A pull-up

resistor of 1.5kΩ –2.2kΩ to VIO is required. Connect to ground if not used.

Digital I/O

SEL1

Buck1 Default VOUT Selection Input. Connect a selection resistor (RSEL1)

between SEL1 and AGND to configure the default VOUT1 and VOUT1 range.

Default settings can be overwritten through I2C. See the Default Output Voltage

Selection (SELx) section for more information.

Analog Input

SEL2

Buck2 Default VOUT Selection Input. Connect a selection resistor (RSEL2)

between SEL2 and AGND to configure the default target VOUT2 and VOUT2

range. Default settings can be overwritten through I2C. When RSEL2 ≤ 95.3Ω,

Buck2 becomes a slave phase of a multiphase converter. See the Default Output

Voltage Selection (SELx) section for more information.

Analog Input

SEL3

Buck3 Default VOUT Selection Input. Connect a selection resistor (RSEL3)

between SEL3 and AGND to configure the default target VOUT3 and VOUT3

range. Default settings can be overwritten through I2C. When RSEL3 ≤ 95.3Ω,

Buck3 becomes a slave phase of a multiphase converter. See the Default Output

Voltage Selection (SELx) section for more information.

Analog Input

SEL4

Buck4 Default VOUT Selection Input. Connect a selection resistor (RSEL4)

between SEL4 and AGND to configure the default target VOUT4 and VOUT4

range. Default settings can be overwritten through I2C. When RSEL4 ≤ 95.3Ω,

Buck4 becomes a slave phase of a multiphase converter. See the Default Output

Voltage Selection (SELx) section for more information.

Analog Input

MULTIFUNCTION I/O

MFIO1

Multifunction Input/Output. If this pin is not used, leave it floating. See the MFIO