TPS75818KC屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由美國(guó)德州儀器公司制造生產(chǎn)的TPS75818KC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。

FEATURES

· 3A Low-Dropout Voltage Regulator

· Available in 1.5V, 1.8V, 2.5V, and 3.3V

Fixed-Output and Adjustable Versions

· Dropout Voltage Typically 150mV at 3A

(TPS75833)

· VREF and Pinout Compatible with MIC29302

(TPS758A01)

· Low 125mA Typical Quiescent Current

· Fast Transient Response

· 3% Tolerance Over Specified Conditions for

Fixed-Output Versions

· Available in 5-Pin TO-220 and TO-263

Surface-Mount Packages

· Thermal Shutdown Protection

DESCRIPTION

The TPS758xx family of 3A low dropout (LDO)

regulators contains four fixed voltage option

regulators and an adjustable voltage option

regulator. These devices are capable of supplying 3A

of output current with a dropout of 150mV

(TPS75833). Therefore, the device is capable of

performing a 3.3V to 2.5V conversion.

Quiescent current is 125mA at full load and drops to

less than 1mA when the device is disabled. The

TPS758xx is designed to have fast transient

response for large load current changes.

Because the PMOS device behaves as a low-value

resistor, the dropout voltage is very low (typically

150mV at an output current of 3A for the TPS75833)

and is directly proportional to the output current.

Additionally, since the PMOS pass element is a

voltage-driven device, the quiescent current is very

low and independent of output loading (typically

125mA over the full range of output current). These

two key specifications yield a significant

improvement in operating life for battery-powered

systems.

The device is enabled when EN (enable) is

connected to a high voltage level (> 2V). Applying a

low voltage level (< 0.7V) to EN shuts down the

regulator, reducing the quiescent current to less than

1mA at TJ = +25°C.

The TPS758xx is offered in 1.5V, 1.8V, 2.5V, and

3.3V fixed-voltage versions and in an adjustable

version (programmable over the range of 1.22V to

5V). Output voltage tolerance is specified as a

maximum of 3% over line, load, and temperature

ranges. The TPS758xx family is available in a 5-pin

TO-220 (KC) and TO-263 (KTT) packages.