TPS71550DCKR集成電路（IC）的線性+開關(guān)穩(wěn)壓器規(guī)格書PDF中文資料

TPS71550DCKR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TPS71550DCKR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(wú)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

? Input voltage range:

– 2.5 V to 24 V (30 V max for new chip only)

? Available output voltage options:

– Fixed: 1.8 V to 5 V

– Adjustable: 1.205 V to 15 V

? Output current: Up to 50 mA

? Very low IQ: 3.2 μA at 50-mA load current

? Stable with output capacitor ≥ 0.47 μF

? Overcurrent protection

? Package: 5-pin SC70 (DCK)

? Operating junction temperature: –40°C to +125°C

? For an 80-mA rated current and higher power

package, see the TPS715A

2 Applications

? Home and building automation

? Retail automation and payment

? Grid infrastructure

? Medical applications

? Lighting applications

3 Description

The TPS715 low-dropout (LDO) linear voltage

regulator is low quiescent current device that offers

the benefits of a wide input voltage range and lowpower

operation in miniaturized packaging. Thus, the

TPS715 is designed for battery-powered applications

and as a power-management attachment to lowpower

microcontrollers.

The TPS715 is available in both fixed and adjustable

versions. For more flexibility or higher output voltages,

the adjustable version uses feedback resistors to set

the output voltage from 1.205 V to 15 V. The TPS715

LDOs support a low dropout of typically 415 mV at

50 mA of load current. The low quiescent current

(3.2 μA typically) is stable over the entire range of

output load current (0 mA to 50 mA). The TPS715

also features an internal soft-start to lower the inrush

current. The built-in overcurrent limit helps protect the

regulator in the event of a load short or fault.