EUP3286-6A,30V,频率可调的同步降压型DC-DC转换器 DataSheet

概述
EUP3286是一款同步、导通时间固定、高效率的降压型DC-DC转换器。其输入电压可高至30V，在低至0.8V的输出电压下带载可达6A。EUP3286采用固定导通时间的架构，使其在具有快速的瞬态响应的基础上还能维持相对恒定的工作频率。EUP3286的工作频率可以通过外部电阻在100KHz~1MHz的范围内调整。
EUP3286同时集成了输入欠压保护功能、逐周期限流功能、输出过压保护功能、短路保护功能和过温保护功能。同时，外部可调的软启控制最大程度上的抑制了可能出现在启动阶段的浪涌电流和输出过冲。
EUP3286采用4mm x 4mm的TQFN-23L封装。

特点
• 宽输入电压范围：2.7V~30V
• 输出负载可达6A
• 良好的线性瞬态响应和负载瞬态响应
• 内部集成Power NMOS:上管37mΩ，下管15mΩ
• 工作频率可在100KHz~1MHz范围内调整
• 外部可调的软启动功能
• 两种工作模式：Force PWM和PFM
• 输出电压状态指示
• 输入欠压保护功能
• 输出过压保护功能
• 短路保护功能
• 逐周期的限流保护功能
• 过温保护功能
• 4mm x 4mm TQFN-23L封装
• 符合RoHS规范及Lead(Pb)-Free Halogen-Free

应用
• 笔记本
• 主板
• 平板电脑
• 便携式移动设备
• 一体机
• 机顶盒
• 液晶电视
• 电信/网络/数据通信设备

EUP3286-6A,30V,Synchronous Step-Down Converter with Programmable Frequency 

Description
The EUP3286 is a synchronous, step-down constant on-time buck regulator capable of driving 6A continuous load current. The EUP3286 can operate with an input range 2.7V to 30V and the output can be externally set down to 0.8V. The EUP3286 provides excellent transient response with constant on-time control method while maintaining a nearly constant frequency. The switching frequency can be externally programmed from 100KHz to 1MHz.
Fault condition protection includes VIN under-voltage lockout, cycle-by-cycle current limiting, output over-voltage protection, short-circuit protection, as well as thermal shutdown. Programmable soft-start minimizes the inrush supply current and the output overshoot at initial startup.
The EUP3286 is available in a 4mm x 4mm TQFN-23L package.

Feature
• Wide input voltage range: 2.7V to 30V
• 6A Output Current
• Excellent line and load transient responses
• Integrated 37mΩ N-Channel MOSFET For High Side
• Integrated 15mΩ N-Channel MOSFET For Low Side
• Programmable PWM Frequency from 100kHz to 1000kHz
• Adjustable Soft-Start
• able Forced PWM or automatic PFM/PWM mode
• Power Good Monitoring
• Under-Voltage Protection
• Over-Voltage Protection
• Cycle-by-cycle current limit
• Short-circuit protection
• Over-Temperature Protection
• Available in TQFN-23L 4mmx4mm package
• RoHS Compliant and 100% Lead(Pb)- Free, Halogen-Free

Application
• Notebook
• Mother Board
• Table PC
• Hand-Held Portable
• AIO PC
• Set-top boxes
•LCD TV
• Telecom/Networking/Datacom equipment