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ADI/LINEAR LTC3869EUFD#TRPBF LTC3869EUFD
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ADI(Analog Devices) / LINEAR LTC3869EUFD#TRPBF
- Type
- ADI/LINEAR
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ADI(Analog Devices) / LINEAR
- Electronic Component
- LTC3869EUFD#TRPBF
- Electronic Component
- 1
- Package
- QFN-28(4x5)
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.09g
- Electronic Component
- 1
- Features
- Built-in LDORegulator; Frequency Synchronous;;; Output Voltage
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0264795798
- Operating Temperature
- 40℃~+125℃@(TJ)
- Operating Voltage
- 4V~38V
- Switching Frequency
- 780kHz
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LTC3869EUFD#TRPBF 产品概述
一、概述
LTC3869EUFD#TRPBF 是 ADI/Linear 的双通道降压型 DC‑DC 控制器，工作电压范围宽（4V～38V），输出电压可调（0.6V～12.5V），采用外置同步整流 MOSFET 拓扑，开关频率固定 780kHz 并支持频率同步。器件工作温度范围为 -40℃ 到 +125℃(TJ)，适合电信、工业电源、分布式点对点电源及高压输入系统的多路供电设计。
二、主要特性
- 双通道降压控制，输出可独立调整或跟踪
- 输入电压范围：4V～38V，输出范围：0.6V～12.5V
- 固定开关频率 780kHz，支持外部同步频率输入
- 低静态电流 Iq≈3mA，支持轻载高效模式
- 外置同步整流（降低导通损耗，提升效率）
- 内置 LDO 稳压器，为控制器及逻辑供电
三、保护与控制功能
- 可调软启动，避免启动浪涌与输出电压冲击
- 可调限流与过流保护（保护外置 MOSFET 与负载）
- 输出电压跟随（tracking）与工作状态指示（PG/状态标志）
- 热关断与正常工作区保护，适应高温工作环境
四、封装与典型应用
- 封装：QFN-28-EP (4x5mm) 带外露散热焊盘，便于散热与 PCB 散热过孔设计
- 典型应用：电信与基站电源、服务器/存储点对点供电、工业自动化、车用/商用高压输入供电系统
五、设计与布局建议
- 外置开关 MOSFET 要选低 Rds(on) 且高速驱动的器件以降低开关与导通损耗
- 输出电感与电容选择需兼顾峰值电流与纹波要求，低 ESR 电解/陶瓷混合方案常用
- PCB 布局重点：输入电容与开关节点靠近 MOSFET，减小回流环路面积；大面积接地与器件底部焊盘散热通孔
- 合理设置软启动与限流参数，配合系统启动顺序与上电容载荷
六、总结
LTC3869EUFD 提供高输入电压耐受、高集成功能与灵活保护配置，适合需要多通道、外置功率器件以优化效率与热管理的降压电源方案。凭借 780kHz 的工作频率与轻载高效模式，可在体积、效率与成本之间取得平衡。
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