TPS76925QDBVRQ1集成電路（IC）的線性+開關(guān)穩(wěn)壓器規(guī)格書PDF中文資料

TPS76925QDBVRQ1屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由德州儀器制造生產(chǎn)的TPS76925QDBVRQ1穩(wěn)壓器 - 線性線性穩(wěn)壓器用于提供穩(wěn)定的輸出電壓，無論負(fù)載電流、輸入電壓或環(huán)境因素如何變化，這些輸出電壓通常都要保持不變。它們的工作原理要求輸入電壓維持在高于所需的輸出電壓，而且要超出某個(gè)最小量，并且在工作時(shí)會(huì)將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對(duì)于大多數(shù)應(yīng)用而言，雖然這種穩(wěn)壓器的效率低于開關(guān)模式的穩(wěn)壓器，但它們通常更適合對(duì)噪聲高度敏感的應(yīng)用。

1 Features

? AEC-Q100 qualified for automotive applications:

– Temperature grade 1: ?40°C to 125°C, TA

? Input voltage range:

– Legacy chip: 2.7V to 10V (13.5V absolute max)

– New chip: 2.5V to 16V (18V absolute max)

? Output voltage range (adjustable):

– Legacy chip: 1.25V to 5.5V

– New chip: 1.2V to 5.5V

? Output voltage range (fixed):

– Legacy chip: 1.5V to 5V

– New chip: 1.2V to 5V

? High PSRR (new chip): 46dB at 1MHz

? Output accuracy:

– Legacy chip: 3% over load and temperature

– New chip: 1.2% over load and temperature

? Dropout voltage:

– Legacy chip: 71mV (typ) at 100mA

– New chip: 150mV (typ) at 100mA

? Integrated fault protection:

– Thermal shutdown

– Overcurrent protection

? Internal soft-start time (new chip): 750μs (typical)

? Output capacitor for stable operation:

– Legacy chip: ≥ 4.7μF

– New chip: ≥ 2.2μF

? Package: 5-pin SOT-23, RθJA = 178.6°C/W (new

chip)

2 Applications

? Hybrid, electric, and powertrain systems

? ADAS modules

? Infotainment and cluster

? Industrial transportation

3 Description

The TPS769-Q1 is a low-dropout (LDO) linear voltage

regulator. This device supports an input voltage range

from 2.5V to 16V (new chip) and up to 100mA of load

current. For the new chip, the supported output range

is from 1.2V to 5.0V (fixed version) or from 1.2V to

5.5V (adjustable version).

The wide input voltage range makes the device a

good choice for operating from regulated rails (such

as 10V or 12V). The voltage range is up to 16V for

the new chip. This range allows the LDO to generate

the bias voltage for a variety of applications. These

applications include power microcontrollers (MCUs)

and processors, as well as silicon carbide (SiC) gate

drivers and microphones.

Wide bandwidth PSRR performance is greater than

70dB at 1kHz and 46dB at 1MHz (new chip). This

performance helps attenuate the switching frequency

of an upstream DC/DC converter and minimizes post

regulator filtering. The new chip supports an internal

soft-start circuit mechanism that reduces inrush

current during start-up, thus allowing for smaller input

capacitance.