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 9.5V (typ) with respect

to the SP pin. 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 15.5V by an internal shunt regulator. For high voltage auxiliary supply

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

SL

4

n/a

Slave Input-Output:

This pin is used for paralleling multiple PI2001 solutions in high

power applications. When the PI2001 is configured as the Master, this pin functions

as an output capable of driving up to 10 SL pins of slaved PI2001 devices. It serves

as an input when the PI2001 is configured in slave mode.

BK

5

4

Blanking Timer Input-Output:

Connect a resistor from BK to GND to set the blanking

time for the Reverse Comparator function. To configure the controller in slave mode,

connect BK to VC. To configure the controller in master mode with the fastest turn-off

response, connect BK directly to GND.

FT

6

5

Fault State Output:

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

inputs are VC Under-Voltage, Input Under-Voltage, Input Over-Voltage, Forward Over-

Current, light load, reverse current, and Over-Temperature. 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. 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.

UV

9

8

Input Under-Voltage Input:

The UV pin is used to detect an input source under-

voltage condition in ground referenced applications. When the UV pin voltage drops

voltage UV threshold is programmable through an external resistor divider. Connect

UV to VC to disable this function.

OV

10

n/a

Input Over-Voltage Input:

The OV pin is used to detect an input source over-voltage

condition in ground referenced applications. When the OV pin voltage crosses the OV

threshold is programmable through an external resistor divider. Connect OV to GND

to disable this function.

Package Pin-Outs

10 Lead TDFN (3mm x 3mm)

Top view

8 Lead SOIC (5mm x 6mm)

Top view

Picor Corporation • picorpower.com

PI2001

Rev 1.0