SC2453集成电路（IC）的线性稳压器控制器规格书PDF中文资料

SC2453属于集成电路（IC）的线性稳压器控制器。由升特制造生产的SC2453稳压器 - 线性 + 开关此产品族中的产品用于构建执行 DC-DC 转换或电压调节功能的电路，采用的是开关模式和线性稳压器功能的组合。虽然具体的拓扑各不相同，但此类产品的主要目的是将开关模式技术的效率优势与线性稳压技术的低噪声特性结合在一起。

描述 Description

The SC2453 is a high performance controller for multioutput converters that can be configured for a wide variety of applications. The SC2453 utilizes PWM synchronous buck topologies where efficiency is most important. It also provides dedicated programmable positive and negative linear regulators using external transistors. Each of the three positive outputs is adjustable down to 0.5V. The two PWM switchers are synchronized 180° out of phase reducing input ripple, allowing for fewer input capacitors. Power up sequencing prevents converter latchup.

特性 Features

◆ Two synchronized converters for low noise

◆ Power up sequencing to prevent latch-up

◆ Out of phase operation for low input ripple

◆ Over current protection

◆ Wide input range, 4.5 to 30V

◆ Programmable frequency up to 700KHz

◆ Two synchronous bucks for high efficiency at high current

◆ One dedicated programmable positive linear regulator and one dedicated programmable negative linear regulator

◆ Output voltage as low as 0.5V

◆ Small package TSSOP-28. Also offered in lead free, WEEE and RoHS compliant package

Applications

◆ DSL applications with multiple input voltage requirements

◆ Mixed-Signal applications requiring positive and negative voltages

◆ Cable modem power management

◆ Base station power management