Description

The SC1563 is a high performance positive voltage regulator designed for use in applications requiring very low dropout voltage at up to 500mA. 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 with no heatsink. Additionally, the SC1563 has a shutdown pin to further reduce power dissipation while shut down. The SC1563 provides excellent regulation over variations in line, load and temperature.

A wide range of fixed output voltage options are available. In addition, the output voltage of every device can be adjusted between 1.2V and 4.8V using external resistors. The SC1563 comes in the space saving 5-pin SOT-23 package.

Features

♦ 350mV dropout @ 500mA

♦ Designed to operate with ceramic capacitors

♦ Adjustable output from 1.2V to 4.8V

♦ Multiple output voltage options (all parts also adjustable externally using resistors)

♦ Over current and over temperature protection

♦ 2µA quiescent current in shutdown

♦ No minimum load current requirement

♦ Low reverse leakage (output to input)

♦ Full industrial temperature range

♦ 5-pin SOT-23 surface mount package. Also available in Lead-free, fully WEEE and RoHS compliant

Applications

♦ Personal Digital Assistants

♦ Battery powered systems

♦ Motherboards

♦ Peripheral cards

♦ PCMCIA cards

SC1563属于集成电路（IC） > 线性 + 开关稳压器。Semtech Corporation制造生产的SC1563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。