TPS79730QDCKRQ1屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由美國德州儀器公司制造生產(chǎn)的TPS79730QDCKRQ1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(zhuǎn)換為熱量。對于大多數(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噪聲高度敏感的應(yīng)用。

FEATURES

Qualified for Automotive Applications

10-mA Low-Dropout Regulator

Ultralow 1.2-μA Quiescent Current at 10 mA

5-Pin SC70/SOT-323 (DCK) Package

Integrated Power Good Output

Stable With Any Capacitor (>0.47 μF)

Dropout Voltage Typically 105 mV at 10 mA

(TPS79733)

Over Current Limitation

?40°C to 125°C Operating Junction

Temperature Range

APPLICATIONS

Battery Powered Microcontrollers and

Microprocessors

DESCRIPTION

The TPS797xx family of low-dropout (LDO) voltage

regulators offers the benefits of low-dropout voltage and

ultralow-power operation. The device is stable with any

capacitor (>0.47 μF). Therefore, implementations of

this device require little board space due to the

miniaturized packaging and potentially small output

capacitor. In addition, the family includes an integrated

open drain active-high power good (PG) output.

Intended for use in microcontroller based,

battery-powered applications, the TPS797xx family’s

low dropout and ultralow-powered operation results in

a significant increase in system battery operating life.

The small packaging minimizes consumption of board

space.

The device is enabled when the applied voltage

exceeds the minimum input voltage. The usual PNP

pass transistor has been replaced by a PMOS pass

element. Because the PMOS pass element behaves as

a low-value resistor, the dropout voltage is low, typically

105 mV at 10 mA of load current and is directly

proportional to the load current. The quiescent current

is ultralow (1.2 μA typically) and is stable over the entire

range of output load current (0 mA to 10 mA). When

properly configured with a pullup resistor, the PG output

can be used to implement a power-on reset or low

battery indicator. The TPS797xx is offered in 1.8-V, 3-V,

and 3.3-V fixed options.