LTC7821集成电路（IC）的PMIC-稳压器-DCDC开关式控制器规格书PDF中文资料

LTC7821属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由亚德诺半导体技术有限公司制造生产的LTC7821DC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。

DESCRIPTION

The LTC®7825 is a fully integrated monolithic DC/DC converter.

It achieves very high efficiency with a switched

capacitor architecture in applications with 2:1 input to

output voltage ratio. The LTC7825 input can survive voltage

transient up to 40V when protected by an optional

MOSFET between VIN and VHIGH. The input and output

are fully disconnected during short-circuit conditions.

The LTC7825 features integrated bootstrap diodes and

provides a compact and cost-effective solution for high

power intermediate bus applications requiring current

limit protections.

FEATURES

n Wide VHIGH/VLOW Voltage from 0V/0V to 24V/12V

n Wide VCC Supply Range from 4.5V to 38V

n Very High Efficiency: 97 at 10A Load

n Input Overvoltage Protection with External

Overvoltage Protection MOSFET

n Input and Output Short-Circuit Protection

n Soft Start-Up into Steady-State Operation

n EXTVCC Capable of 5V to 14V Input for High Efficiency

n Inrush Current Limit and Protection

n Integrated Bootstrap Diodes

n Programmable Operating Frequency from

100kHz to 1.4MHz

n Available in a 4mm × 5mm LGA (LQFN) Package

APPLICATIONS

n Consumer Electronics

n Industrial Applications

n Battery Applications