描述 Description

The LD49150 is a high-bandwidth, low-dropout, 1.5 A voltage regulator, ideal for powering core voltages of low power microprocessors. The LD49150 implements a dual supply configuration, which guarantees a very low output impedance and a very fast transient response. The LD49150 requires a bias input supply and a main input supply, allowing ultra-low input voltages on the main supply rail. The input supply operates from 1.4 V to 5.5 V and the bias supply requires between 3 V and 6 V to work properly. The LD49150 offers fixed output voltages from 0.8 V to 1.8 V and adjustable output voltages starting from 0.8 V. The LD49150 requires a minimum output capacitance for stability, and works optimally with small ceramic capacitors.

特性 Features

? Input voltage range:
? VI = 1.4 V to 5.5 V
? VBIAS = 3 V to 6 V
? Stable with ceramic capacitors
? ±1.5% initial tolerance
? Maximum dropout voltage (VI - VO) 200 mV over the operating temperature range
? Adjustable output voltage starting from 0.8 V
? Fast transient response (up to 10 MHz bandwidth)
? Excellent line and load regulation specifications
? Logic-controlled shutdown option
? Thermal shutdown and current limit protection
? Junction temperature range: - 25 °C to 125 °C

簡介

LD49150屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由制造生產(chǎn)的LD49150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。