Description

The SC1566 is a high performance positive voltage regulator designed for use in applications requiring very low dropout voltage at up to 3 Amps. Since it has superior dropout characteristics compared to regular LDOs, it can be used to supply 2.5V on motherboards or 2.8V on peripheral cards from the 3.3V supply thus allowing heat sink size reduction or elimination. Additionally, the five pin versions of SC1566 have an enable pin, to further reduce power dissipation while shutdown. The SC1566 provides excellent regulation over variations in line, load and temperature.

Features

♦ 350mV dropout @ 3A

♦ Adjustable output from 1.2V to 4.8V

♦ 2.5V and 1.8V options (5 pin parts also adjustable externally using resistors)

♦ Over current and over temperature protection

♦ Enable pin

♦ 10µA quiescent current in shutdown

♦ Low reverse leakage (output to input)

♦ Full industrial temperature range

♦ TO-220 and TO-263 packages

Applications

♦ Battery powered systems

♦ Motherboards and notebook computers

♦ Peripheral cards

♦ Network cards

♦ Set top boxes

♦ Medical equipment

SC1566IT属于集成电路（IC） > 线性 + 开关稳压器。Semtech Corporation制造生产的SC1566IT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。