Pin Description

Pin Number

Pin

Name

10 Lead

TDFN

8 Lead

SOIC

Description

GND

1

1

Ground:

This pin is ground for the gate driver and control circuitry.

GATE

2

2

Gate Drive Output:

This pin drives the gate of the external N-channel MOSFET.

Under normal operating conditions, the GATE pin pulls high to VC-0.5V. The

controller turns the gate off during a reverse current fault that exceeds the reverse

voltage threshold.

VC

3

3

Controller Input Supply:

This pin is the supply pin for the control circuitry and gate

driver. Connect a 1μF capacitor between VC pin and the GND pin. Voltage on this pin

is limited to 11V by an internal shunt regulator. For high voltage auxiliary supply

applications connect a shunt resistor between VC and the auxiliary supply.

FC

5

4

Fault Clamp Input:

voltage higher than the VC pin to clamp it to VC plus a diode. Leave this pin open if

unused.

FT

6

5

Fault State Output:

This open collector pin pulls low when a fault occurs. Fault logic

inputs are VC Under-Voltage, Reverse Current, Forward Over-Current, and light load.

Leave this pin open if unused.

SP

7

6

Positive Sense Input & Clamp:

Connect SP pin to the Source pin of the external N-

channel MOSFET close to the GND pin. The polarity of the voltage difference

between SP and SN provides an indication of current flow direction through the

MOSFET.

SN

8

7

Negative Sense Input & Clamp:

Connect SN to the Drain pin of the external N-

channel MOSFET. The polarity of the voltage difference between SP and SN provides

an indication of current flow direction through the MOSFET.

Package Pin-Outs

10 Lead TDFN (3mm x 3mm)

Top view

8 Lead SOIC (5mm x 6mm)

Top view

Picor Corporation • picorpower.com

PI2003

Rev 1.0