TLV755185PDQNR集成電路（IC）的線性+開關穩(wěn)壓器規(guī)格書PDF中文資料

TLV755185PDQNR屬于集成電路（IC）的線性+開關穩(wěn)壓器。由德州儀器制造生產的TLV755185PDQNR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，而且要超出某個最小量，并且在工作時會將輸入端的任何多余電壓轉換為熱量。對于大多數(shù)應用而言，雖然這種穩(wěn)壓器的效率低于開關模式的穩(wěn)壓器，但它們通常更適合對噪聲高度敏感的應用。

1 Features

? Input voltage range: 1.45 V to 5.5 V

? Low IQ: 25 μA (typical)

? Low dropout:

– 238 mV (maximum) at 500 mA (3.3 VOUT)

? Output accuracy: 1 (maximum at 85°C)

? Built-in soft-start with monotonic VOUT rise

? Foldback current limit

? Active output discharge

? High PSRR: 46 dB at 100 kHz

? Stable with a 1-μF ceramic output capacitor

? Packages:

– 2.9-mm × 2.8-mm SOT-23-5

– 2.9-mm × 2.8-mm SOT-23-5 with thermal pad

(advance information only)

– 1-mm × 1-mm X2SON-4

– 2-mm × 2-mm WSON-6

2 Applications

? Set-top boxes, TV, and gaming consoles

? Portable and battery-powered equipment

? Desktops, notebooks, and ultrabooks

? Tablets and remote controls

? White goods and appliances

? Grid infrastructure and protection relays

? Camera modules and image sensors

TLV755P

IN

EN

OUT

GND

COUT

CIN

ON

OFF

Typical Application

Time (ms)

Voltage (V)

Output Current (mA)

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2

0 0

1 25

2 50

3 75

4 100

5 125

6 150

7 175

VOUT VIN VEN IOUT

Start-Up Waveform

3 Description

The TLV755P is an ultra-small, low quiescent current,

low-dropout regulator (LDO) that sources 500 mA

with good line and load transient performance.

The TLV755P is optimized for a wide variety of

applications by supporting an input voltage range

from 1.45 V to 5.5 V. To minimize cost and solution

size, the device is offered in fixed output voltages

ranging from 0.6 V to 5 V to support the lower

core voltages of modern microcontrollers (MCUs).

Additionally, the TLV755P has a low IQ with enable

functionality to minimize standby power. This device

features an internal soft-start to lower inrush current,

thus providing a controlled voltage to the load and

minimizing the input voltage drop during start up.

When shutdown, the device actively pulls down the

output to quickly discharge the outputs and ensure a

known start-up state.

The TLV755P is stable with small ceramic output

capacitors allowing for a small overall solution size.

A precision band-gap and error amplifier provides

a typical accuracy of 1. All device versions

have integrated thermal shutdown, current limit, and

undervoltage lockout (UVLO). The TLV755P has an

internal foldback current limit that helps reduce the

thermal dissipation during short-circuit events.

The TLV755 is available in the popular WSON,

X2SON, and SOT23-5 (DRV, DQN, and DBV)

packages. This device is also available in a

thermally enhanced SOT23-5 (DYD) package with

a thermal pad that provides significantly reduced

thermal resistance compared to a standard SOT23-5

package.