厂商 :深圳市龙岗区诚芯微科技有限公司
广东 深圳- 主营产品:
- 车充芯片
- 旅充IC
- 单片机开发
CX8505 3A、30V同步整流降压稳压器
概述
CX8505是一款单芯片的同步降压稳压器。在输入电压范围内可提供持续的3A负载电流,采用的电流控制模式有快的瞬态响应和不间断的过流检测,具有软启动、低压保护、过温保护、过流保护等功能,在待机模式下电流仅为0.3μA。
特点
3A输出电流、4A峰值电流
输入电压范围4.75V~30V
内部集成峰值4A功率MOSFET开关管
输出电压在0.925V~20V间可调
高达95%的效率
可调整的软启动时间
应用
分布式电源系统
网络系统
笔记本电脑
DESCRIPTION
The CX8505 is a monolithic synchronous buck regulator. The device integrates 100m? MOSFETS that provide 3A continuous load cur- rent over a wide operating input voltage of 4.75V to 30V. Current mode control provides fast transient response and cycle-by-cycle cur- rent limit.
An adjustable soft-start prevents inrush current at turn-on. In shutdown mode, the supply cur- rent drops below 1 μA.
This device, available in an 8pin SOIC pack- age, provides a very compat system solution with minimal reliance on external components.
FEATURES
z 3A Output Current
z Wide 4.75V to 30V Operating Input Range
z Integrated 100m? Power MOSFET Switches
z Output Adjustable from 0.925V to 20V
z Up to 95% Efficiency
z Programmable Soft-Start
z Stable with Low ESR Ceramic Output Capaci-
tors
z Fixed 340KHz Frequency
z Cycle-by-Cycle Over Current Protection
z Input Under Voltage Lockout
z Thermally Enhanced 8-Pin SOIC Package
APPLICATIONS
z Distributed Power Systems
z Networking Systems
z Set-top Box
z LCD TV/Monitor
z Notebook or Mini-Book