TPS746-Q1

EN

IN

OUT

PG

*Pull-up resistor not required

for push-pull option

FB

GND

TPS746-Q1

EN

IN

OUT

PG

*Pull-up resistor not required

for push-pull option

GND

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

TPS746-Q1

SBVS358A – JUNE 2018 – REVISED OCTOBER 2019

TPS746-Q1 1-A LDO With Power-Good in Small Wettable Flank WSON Packages

1

1 Features

1

•

AEC-Q100 qualified for automotive applications:

–

•

Device operating junction temperature range:

–40°C to +150°C

•

Package:

–

2-mm × 2-mm wettable flank WSON

–

3-mm × 3-mm wettable flank WSON (preview)

•

Input voltage range: 1.5 V to 6.0 V

•

Output voltage range:

–

Fixed option: 0.65 V to 5.0 V

–

Adjustable option: 0.55 V to 5.5 V

•

High PSRR: 38 dB at 100 kHz

•

Output accuracy: ±0.85% typical, ±1.5% maximum

•

Power-good output options:

–

Open-drain or push-pull

•

Ultra-low dropout:

–

•

Stable with a 1-µF or larger capacitor

•

•

Active output discharge

•

Low thermal resistance:

–

–

(preview)

2 Applications

•

Automotive head units

•

Front and rear cameras

•

Automotive cluster displays

•

Telematics control units

•

Medium, short range radar

3 Description

The TPS746-Q1 is a 1-A ultra-low-dropout regulator

(LDO) with power-good functionality. This device is

available in a small 6-pin, 2-mm × 2-mm and a small

8-pin, 3-mm × 3-mm WSON package with wettable

flanks to facilitate optical inspection. The TPS746-Q1

consumes low quiescent current and provides fast

line and load transient performance.

The TPS746-Q1 is a flexible device for post-

regulation by supporting an input voltage range from

1.5 V to 6.0 V and an externally adjustable output

range of 0.55 V to 5.5 V. The device also features

fixed output voltages for powering common voltage

rails.

The TPS746-Q1 has a power-good (PG) output that

monitors the voltage at the feedback pin to indicate

the status of the output voltage. The EN input and PG

output can be used for sequencing multiple power

supplies in the system.

The TPS746-Q1 is stable with small ceramic output

capacitors, allowing for a small overall solution size.

A precision band-gap and error amplifier provides

high accuracy of ±0.85% (max) at 25°C and ±1.5%

(max)

over

temperature.

This

device

includes

integrated

thermal

shutdown,

current

limit,

and

undervoltage lockout (UVLO) features. The TPS746-

Q1 has an internal foldback current limit that helps

reduce the thermal dissipation during short-circuit

events.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS746-Q1

Wettable flank

WSON (6)

2.00 mm × 2.00 mm

Wettable flank

WSON (8)(2)

3.00 mm × 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

(2) Preview package.

Typical Application: Fixed Voltage Version

Typical Application: Adjustable Voltage Version