1

IN

16

OUT

2

EN

15

PGADJ

3

FSEL

14

PG

4

WTS

13

GND

5

GND

12

WRS

6

NC

11

WD_EN

7

ROSC

10

WDO

8

DELAY

9

WD

Not to scale

Thermal

pad

3

TPS7B6333-Q1, TPS7B6350-Q1

www.ti.com

SLVSDU9A – FEBRUARY 2017 – REVISED MARCH 2017

Product Folder Links: TPS7B6333-Q1 TPS7B6350-Q1

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Copyright © 2017, Texas Instruments Incorporated

5 Pin Configuration and Functions

PWP PowerPAD™ Package

16-Pin HTSSOP With Exposed Thermal Pad

Top View

NC - No internal connection

Pin Functions

PIN

I/O

DESCRIPTION

NAME

NO.

DELAY

8

O

Power-good delay-period adjustment pin. Connect this pin via a capacitor to ground to adjust

the power-good delay time.

EN

2

I

Device enable pin. Pull this pin down to low-level voltage to disable the device. Pull this pin

up to high-level voltage to enable the device.

FSEL

3

I

Internal oscillator-frequency selection pin. Pull this pin down to low-level voltage to select the

high-frequency oscillator. Pull this pin up to high-level voltage to select the low-frequency

oscillator.

GND

5, 13

—

Ground reference

IN

1

I

Device input power supply pin

NC

6

—

Not connected

OUT

16

O

Device 3.3-V or 5-V regulated output-voltage pin

PG

14

O

resistor. When the output voltage is not ready, this pin is pulled down to ground.

PGADJ

15

O

Power-good threshold-adjustment pin. Connect a resistor divider between the PGADJ and

OUT pins to set the power-good threshold. Connect this pin to ground to set the threshold to

ROSC

7

O

Watchdog timer adjustment pin. Connect a resistor between the ROSC pin and the GND pin

to set the duration of the watchdog monitor. Leaving this pin open or connecting this pin to

ground results in the watchdog reporting a fault at the watchdog output (WDO).

WD

9

I

Watchdog service-signal input pin.

WDO

10

O

Watchdog status pin. Open-drain output pin. Pull this pin up to OUT or a reference voltage

through a resistor. When watchdog fault occurs, this pin is pulled down to a low-level voltage.

WD_EN

11

I

Watchdog enable pin. Pull this pin down to a low level to enable the watchdog. Pull this pin

up to a high level to disable the watchdog.

WRS

12

I

Window ratio-selection pin (only applicable for the window watchdog). Pull this pin down to a

low level to set the open:closed window ratio to 1:1. Pull this pin up to high level to set the

open:closed window ratio to 8:1.

WTS

4

O

Watchdog type-selection pin. To set the window watchdog, connect this pin to the GND pin.

To set the standard watchdog, pull this pin high.

Thermal pad

—

—

Solder to board to improve the thermal performance.