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LTC3307AHV 符合EMI标准,降压转换器 QCA7005-AL33 PHY
2022-07-02 09:45:00 【Mandy_明佳达电子】
LTC3307A/B采用恒定频率、峰值电流模式控制,开关频率高达3MHz,最短接通时间低至22ns,可利用小型外部元件实现快速瞬态响应。
LTC3307A/B降压Silent Switcher是一款非常小巧、高效率、低噪声、单片同步3A降压型直流/直流转换器,采用2.25V至5.5V输入电源工作。Silent Switcher架构最大限度降低了EMI辐射干扰。

采用强制连续或脉冲跳跃模式,可实现低噪声或低纹波Burst Mode工作,从而在轻负载条件下实现高效率,非常适合用于电池供电系统。该IC可调节低至500mV的输出电压。其他特性包括输出过压/短路保护、热关断、时钟同步以及高达100%占空比运行(用于实现低压差)。该器件采用2mm × 2mm × 0.74mm薄型四方扁平无引线 (LQFN) 封装,具有裸露焊盘(用于实现低热阻)。
特征
高效率:8mΩ NMOS,31mΩ PMOS
可编程频率至3MHz
微型电感器和电容器
峰值电流模式控制
最短导通时间:22ns
宽带宽、快速瞬态响应
Silent Switcher架构
超低EMI辐射干扰
低纹波Burst Mode运行,IQ为40µA
可在过载情况下安全承受电感器饱和
VIN范围:2.25V至5.5V
VOUT范围:0.5V至VIN
VOUT精度:整个温度范围内为±1%
400mV精密使能阈值
关断电流:1µA
内部补偿和软启动
电源良好输出
耐热增强型2mm × 2mm LQFN封装
应用
光学网络、服务器、电信
汽车、工业、通信
分布式直流电源系统 (POL)
FPGA、ASIC、µP内核电源
QCA7005-AL33 PHY 1CH 3.3V 68Pin QFN
规格参数
通道数:1
封装:QFN-68
工作温度:-40 ℃ ~ 85 ℃
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