TPS7A05集成電路（IC）的線性+開關(guān)穩(wěn)壓器規(guī)格書PDF中文資料

TPS7A05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TPS7A05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(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。

1 Features

1? Ultralow IQ: 1 μA (typ), 3 μA (max)

– IGND: 6 μA (typ) at 200 mA

? Excellent transient response

? Packages:

– 1.0-mm × 1.0-mm X2SON (4)

– 0.65-mm × 0.65-mm DSBGA (4)

– SOT-23 (5)

– SOT-23 (3)

? Input voltage range: 1.4 V to 5.5 V

? Output accuracy: 1 typical, 3 maximum

? Available in fixed-output voltage:

– 0.8 V to 3.3 V

? Very low dropout:

– 235 mV (max) at 200 mA (3.3 VOUT)

? Active output discharge

? Foldback current limit

? Stable with a 0.47-μF or larger capacitor

2 Applications

? Wearable electronics

? Ultrabooks, tablets, E-readers

? Always-on power supplies

? Set-top boxes

? Gaming controllers, remote controls, toys, drones

? Wireless handsets and smart phones

? Portable and battery-powered equipment

3 Description

The TPS7A05 is an ultra-small, low quiescent current

low-dropout regulator (LDO) that can source 200 mA

with excellent transient performance. This device has

an output range of 0.8 V to 3.3 V with a typical 1

accuracy.

The TPS7A05, with ultralow IQ (1 μA), consumes

very-low quiescent current for extending battery life in

battery-powered applications. The device can be

operated from rechargeable Li-Ion batteries, Liprimary

battery chemistries such as Li-SOCl2, Li-

MnO2, as well as two- or three-cell alkaline batteries.

The TPS7A05 is available with an active pulldown

circuit to quickly discharge the output when disabled.

The TPS7A05 is fully specified for TJ = –40°C to

+125°C operation, and is available in standard

X2SON (DQN), SOT-23 (DBV and DBZ), and DSBGA

(YKA) packages.