LD1117D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的LD1117D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。

描述 Description

The LD1117 is a LOW DROP Voltage Regulator able to provide up to 800mA of Output Current, available even in adjustable version (Vref=1.25V). Concerning fixed versions, are offered the following Output Voltages: 1.2V,1.8V,2.5V,2.85V, 3.0V 3.3V and 5.0V. The 2.85V type is ideal for SCSI-2 lines active termination.

Feature summary

■ Low dropout voltage (1V TYP.)

■ 2.85V Device performances are suitable for

SCSI-2 active termination

■ Output current up to 800 mA

■ Fixed output voltage of: 1.2V, 1.8V, 2.5V,

2.85V, 3.0V, 3.3V, 5.0V

■ Adjustable version availability (Vrel=1.25V)

■ Internal current and thermal limit

■ Available in ± 1 (at 25°C) and 2 in full

temperature range

■ Supply voltage rejection: 75dB (typ.)