ADP3333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ADP3333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。

GENERAL DESCRIPTION

ADP3333 is a member of the ADP333x family of precision low dropout anyCAP voltage regulators. Pin-compatible with the MAX8860, the ADP3333 operates with a wider input voltage range of 2.6 V to 12 V and delivers a load current up to 300 mA. ADP3333 stands out from other conventional LDOs with a novel architecture and an enhanced process that enables it to offer performance advantages over its competition. Its patented design requires only a 1.0 μF output capacitor for stability. This device is insensitive to output capacitor Equivalent Series Resis tance (ESR), and is stable with any good quality capacitor, including ceramic (MLCC) types for space-restricted applica tions. ADP3333 achieves exceptional accuracy of ±0.8 at room temperature and ±1.8 over temperature, line and load variations. The dropout voltage of ADP3333 is only 140 mV (typical) at 300 mA. This device also includes a safety current limit, thermal overload protection and a shutdown feature. In shutdown mode, the ground current is reduced to less than 1 μA. The ADP3333 has ultralow quiescent current, 70 μA (typ) in light load situations.

FEATURES

High Accuracy Over Line and Load: ±0.8 @ 25°C,

±1.8 Over Temperature

Ultralow Dropout Voltage: 230 mV (Max) @ 300 mA

Requires Only CO = 1.0 μF for Stability

anyCAP = Stable with Any Type of Capacitor

(Including MLCC)

Current and Thermal Limiting

Low Noise

Low Shutdown Current: < 1 μA

2.6 V to 12 V Supply Range

–40°C to +85°C Ambient Temperature Range

Ultrasmall 8-Lead MSOP Package

APPLICATIONS

Cellular Phones

PCMCIA Cards

Personal Digital Assistants (PDAs)

DSP/ASIC Supplies