LDL212集成電路（IC）的線性+開關穩(wěn)壓器規(guī)格書PDF中文資料

LDL212屬于集成電路（IC）的線性+開關穩(wěn)壓器。由意法半導體集團制造生產(chǎn)的LDL212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換為熱量。對于大多數(shù)應用而言，雖然這種穩(wěn)壓器的效率低于開關模式的穩(wěn)壓器，但它們通常更適合對噪聲高度敏感的應用。

Description

The LDL212 provides 1.2 A of maximum current

from an input voltage range from 2.5 V to 18 V,

with a typical dropout voltage of 350 mV @ 1.2 A.

The high power supply rejection ratio of 87 dB at

120 Hz, and more than 40 dB at 100 kHz, makes

the LDL212 suitable for direct regulation in SMPS

and secondary linear regulation in DC-DC

converters. The LDL212 goes to shutdown mode

due to the enable logic control function, reducing

the total current consumption. The device also

includes the current limit, SOA and thermal

protections.

Features

? Input voltage from 2.5 V to 18 V

? 20 V AMR

? Any fixed output voltages, from 1.2 V to 12 V

in 100 mV steps (from 1.2 V to 6.6 V in

50 mV steps) available on request

? Adjustable version from 1.18 V to

VIN-VDROP(MAX)

? Guaranteed output current 1.2 A

? Typical dropout 350 mV@1.2 A

? Undervoltage lockout

? Enable function

? Internal thermal, current and power limitation

? High PSRR: 87 dB @ 120 Hz, 75 dB @

1 kHz

? Operating temperature range: -40 °C to

125 °C

? Packages SO-8 batwing plastic

micropackage, DFN6 (3x3) and DFN6 (2x2)

Applications

? Consumer

? Industrial

? SMPS

? Point-of-load

? DC-DC post-regulation