Not to scale

1

PWM

8

I

2

ST

7

NC

3

GND

6

Q

4

REF

5

D

Not to scale

Thermal

Pad

4

TL4242-Q1

SLVS732G – JULY 2010 – REVISED APRIL 2017

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5 Pin Configuration and Functions

DRJ Package

8-Pin WSON With Exposed Thermal Pad

Top View

KTT Package

7-Pin TO-263 With Exposed Thermal Pad

Top View

Pin Functions

PIN

I/O

DESCRIPTION

NAME

NO.

DRJ

KTT

D

5

6

I

Status delay. To set status reaction delay, connect to GND with a capacitor. For no

delay, leave open.

GND

3

4

—

Ground

I

8

1

I

Input. Connect directly to GND as close as possible to the device with a 100-nF ceramic

capacitor.

NC

7

—

—

No internal connection

PWM

1

2

I

Pulse-width modulation input. If not used, connect to the I pin.

Q

6

7

O

Output

REF

4

5

I

Reference input. Connect to a shunt resistor.

ST

2

3

O

Status output. Open-collector output. Connect to an external pullup resistor (RPULLUP ≥

4.7 k

Ω).

Thermal pad

—

—

—

Solder the thermal pad directly to the PCB. Connect to ground or leave floating.