Overvoltage Protection Controllers with

Current Limit in TDFN

6

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Pin Description

PIN

NAME

FUNCTION

1IN

Input. IN is the power input for the OVP charge pump. Bypass IN to GND with a 1µF or larger

capacitor.

2

EN

Active-Low Enable Input. Drive

EN high to turn off the external MOSFET. Driving EN low activates

the OVP circuitry and turns on the external MOSFET.

3

GATE

4

BTA

Internal Current-Limited Switch Terminal. Connect BTA to the source of the external n-channel

MOSFET. BTA is the power input for the entire device (except the OVP charge pump). Bypass BTA

to GND with a 0.1µF capacitor as close to the device as possible for proper operation.

5CB

Active-Low Internal Current-Limited-Switch Control Input. Drive CB high to turn on the internal

switch, pull CB low to turn off the internal switch.

6

GND

Ground

7

BTB

Internal Current-Limited-Switch Output. Bypass BTB to GND with 0.1µF capacitor as close to the

device as possible.

8

FLAGI

Active-Low Open-Drain Internal Current-Limited Flag Output.

FLAGI asserts low when the current

is at the limit for longer than the blanking time.

FLAGI is disabled when EN goes high.

9

N.C.

No Connection. Not internally connected.

10

OV

Active-Low Open-Drain IN-Overvoltage Flag Output.

OV goes low when an

undervoltage/overvoltage fault occurs at IN.

OV is disabled when EN goes high.

—

EP

Exposed Pad. EP is internally connected to GND. Correct EP to a large ground plane to act as a

heat sink, but do not use EP as the only electrical ground connection.