TPPM0301DR集成電路（IC）的線性+開關穩(wěn)壓器規(guī)格書PDF中文資料

TPPM0301DR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(chǎn)的TPPM0301DR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。

Automatic Input Voltage Source Selection

Glitch-Free Regulated Output

5-V Input Voltage Source Detector With

Hysteresis

400-mA Load Current Capability With 5-V or

3.3-V Input Source

Low rDS(on) Auxiliary Switch

Thermally Enhanced Packaging Concept

for Efficient Heat Management

description

The TPPM0301 is a low-dropout regulator with auxiliary power management that provides a constant 3.3-V

supply at the output capable of driving a 400-mA load.

The TPPM0301 provides a regulated power output for systems that have multiple input sources and require a

constant voltage source with a low-dropout voltage. This is a single output, multiple input intelligent power

source selection device with a low-dropout regulator for either 5VCC or 5VAUX inputs, and a low- resistance

bypass switch for the 3.3VAUX input.

Transitions may occur from one input supply to another without generating a glitch, outside of the specification

range, on the 3.3-V output. The device has an incorporated reverse blocking scheme to prevent excess leakage

from the input terminals in the event that the output voltage is greater than the input voltage.

The input voltage is prioritized in the following order: 5VCC, 5VAUX, and 3.3VAUX.