LD1085CDT-R集成电路（IC）的线性+开关稳压器规格书PDF中文资料

LD1085CDT-R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LD1085CDT-R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 LD1085C is a low drop voltage regulator able to provide up to 3 A of output current. Dropout is guaranteed at a maximum of 1.5 V at the maximum output current, decreasing at lower loads. The LD1085C is pin to pin compatible with the older 3-terminal adjustable regulators, but has better performances in term of drop and output tolerance.

A 2.85 V output version is suitable for SCSI-2 active termination. Unlike PNP regulators, where a part of the output current is wasted as quiescent current, the LD1085C quiescent current flows into the load, so increase efficiency. Only a 10 µF minimum capacitor is need for stability.

The device is supplied in DPAK. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 2 at 25 °C.

特性 Features

■ Typical dropout 1.3 V (at 3 A)

■ Three terminal adjustable output voltage

■ Guaranteed output current up to 3 A

■ Output tolerance ± 2 at 25 °C and ± 3 in full temperature range

■ Internal power and thermal limit

■ Wide operating temperature range -40 °C to 125 °C

■ Package available: DPAK

■ Pinout compatibility with standard adjustable VREG