LD1117D18集成电路（IC）的线性+开关稳压器规格书PDF中文资料

LD1117D18属于集成电路（IC）的线性+开关稳压器。由意法半导体集团制造生产的LD1117D18稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。

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.)