ADP3303屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的ADP3303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(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。

GENERAL DESCRIPTION

The ADP3301 is a member of the ADP330x family of precision low dropout anyCAP?* voltage regulators. The ADP3301 stands out from the conventional LDOs with a novel architecture, an enhanced process and a new package. Its patented design includes a noninverting wideband driver and a stage that permits the use of an internal “pole splitting” capacitor to stabilize the feedback loop with a single output capacitor as small as 0.47 μF. This device is stable with any type of capacitor regardless of its ESR (Equivalent Serial Resistance) value, including ceramic types (MLCC) for space restricted applications. The ADP3301 achieves exceptional accuracy of ±0.8 at room temperature and ±1.4 overall accuracy over temperature, line and load regulations. The dropout voltage of the ADP3301 is only 100 mV (typical) at 100 mA.

FEATURES

High Accuracy (Over Line and Load Regulations at +25°C): 60.8

Ultralow Dropout Voltage: 100 mV Typical @ 100 mA

Requires Only CO = 0.47 μF for Stability

anyCAP?* = Stable with All Types of Capacitors

Current and Thermal Limiting

Low Noise

Dropout Detector

Low Shutdown Current: 1 μA

Several Fixed Voltage Options

3.0 V to 12 V Supply Range

–20°C to +85°C Ambient Temperature Range

Thermally Enhanced SO-8 Package

Excellent Line and Load Regulations

APPLICATIONS

Cellular Telephones

Notebook, Palmtop Computers

Battery Powered Systems

Portable Instruments

Post Regulator for Switching Supplies

Bar Code Scanners