SC560数据手册集成电路（IC）的线性+开关稳压器规格书PDF

描述 Description

The SC560 is a family of dual output, ultra-low dropout linear voltage regulators designed for use in battery powered wireless applications. The SC560A, SC560B, and SC560C provide adjustable output voltages that can be set using two external resistors.

特性 Features

·Input Voltage Range — 2.5V to 5.5V
·Output voltage Ranges — 1.2V to 3.3V (each LDO)
·Maximum Output Current — 300mA (both LDOs)
·Dropout at 200mA load — 200mV max.
·Quiescent Supply Current = 100μA (both LDOs enabled)
·Shutdown Current = 100nA (typ)
·Output Noise < 50μVRMS (SC560A and fixed output versions)
·PSRR < -65dB at 1kHz (SC560A and fixed output versions)
·Over-temperature protection
·Short-circuit protection
·Under-voltage lockout
·Power good monitor for output A (SC560C and fixed output versions)
·Independent enable/disable for LDOB (SC560B and fixed output versions)
·MLPQ-UT8, 1.5mm x 1.5mm x 0.6mm package

应用 Application

·PDAs and Cellular Phones
·GPS Devices
·Palmtop Computers and Handheld Instruments
·TFT/LCD Applications
·Wireless Handsets
·Digital Cordless Phones and PCS Phones
·Personal Communicators
·Wireless LAN

简介

SC560属于集成电路（IC）的线性+开关稳压器。由制造生产的SC560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。