MCP19116T-ESLASHMJ datasheet(17/246 Pages) MICROCHIP

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DS20005479D-page 17

MCP19116/7

2.1.18

IP PIN

Primary input current-sense for current mode control

and peak current limit. For voltage mode control, this

pin can be connected to an artificial ramp.

2.1.19

AGND PIN

AGND is the small signal ground connection pin. This

pin should be connected to the exposed pad on the

bottom of the package.

2.1.20

PGND PIN

Connect all large-signal level ground returns to PGND.

These large-signal level ground traces should have a

small loop area and minimal length to prevent coupling

of switching noise to sensitive traces.

2.1.21

SDRV PIN

The gate of the low-side secondary MOSFET is

connected to SDRV. The PCB trace connecting SDRV

to the gate must be of minimal length and appropriate

width to handle the high-peak drive current and fast

voltage transitions.

2.1.22

PDRV PIN

The gate of the low-side primary MOSFET is

connected to PDRV. The PCB tracing connecting

PDRV to the gate must be of minimal length and

appropriate width to handle the high-peak drive

currents and fast voltage transitions.

2.1.23

VDR PIN

The supply for the low-side drivers is connected to this

pin and has an absolute maximum rating of +13.5V.

This pin can be connected by an RC filter to the VDD

pin.

2.1.24

VDD PIN

The output of the internal +5.0V regulator is connected

to this pin. It is recommended that a 1.0 µF minimum/

10 µF maximum bypass capacitor be connected

between this pin and the GND pin of the device. The

bypass capacitor should be physically placed close to

the device.

2.1.25

VIN PIN

Input power connection pin of the device. It is

recommended that capacitance be placed between this

pin and the GND pin of the device.

2.1.26

VS PIN

Analog input connected to the non-inverting input of the

overvoltage

comparator.

Typically

used

output-voltage overvoltage protection. The inverting

input of the overvoltage comparator is controlled by the

OV REF DAC.

2.1.27

IFB PIN

Error-amplifier inverting feedback connection.

2.1.28

ICOMP PIN

Error-amplifier output signal.

2.1.29

EXPOSED PAD (EP)

It is recommended to connect the exposed pad to

AGND.

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