WMSIC Electronic Components

JSMSEMI MP1484

ModelMP1484
PackageESOP-8
BrandJSMSEMI
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
JSMSEMI MP1484
Type
JSMSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
JSMSEMI
Electronic Component
MP1484
Electronic Component
1
Package
ESOP-8
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.13g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0229961339
Operating Temperature
40℃~+85℃@(TA)
Operating Voltage
4.5V~18V
Switching Frequency
500kHz
Electronic Component
Electronic Component
Output Current
3A

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

MP1484 产品概述

一、简介

MP1484 是杰盛微(JSMSEMI)推出的一款降压型 DC-DC 开关稳压器,采用降压(Buck)拓扑、单通道设计,适用于多种中小功率电源转换场景。器件内置开关管并采用同步整流方式,支持外部可调输出,输入电压范围宽(4.5V~18V),最大输出电流可达3A,开关频率固定在500kHz,静态电流仅600μA,工作环境温度范围为 -40℃~+85℃(TA)。封装为 ESOP-8,便于 PCB 布局与散热处理。

二、主要规格

  • 功能类型:降压型(Buck)
  • 输入电压:4.5V ~ 18V
  • 输出电流:最大 3A
  • 开关频率:500kHz
  • 同步整流:支持(集成同步MOSFET)
  • 输出通道:1 路,可调输出
  • 静态电流(Iq):约 600μA
  • 工作温度:-40℃ ~ +85℃(TA)
  • 开关管:内置
  • 封装:ESOP-8

三、核心特性与优势

  • 同步整流:替代外接肖特基二极管,降低整流损耗,提高中小负载效率。
  • 内置开关管:简化外部器件需求,减少设计复杂度与 PCB 占用面积。
  • 可调输出:通过外部分压网络灵活设定输出电压,适配不同负载与系统需求。
  • 低静态电流:待机功耗低,适合对静态功耗敏感的便携或长期待机应用。
  • 中高频开关(500kHz):允许使用体积更小的电感与滤波电容,有利于整体体积缩小。

四、典型应用

  • 工业控制与通信设备的稳压模块
  • 嵌入式主板、单板电脑的电源管理
  • 便携终端与信息终端电源
  • 摄像头、传感器供电与外设电源
  • 汽车电子非车规等级场景(需评估温度与可靠性)

五、设计建议与注意事项

  • 输入滤波:在靠近芯片的 VIN 与 GND 放置足够的陶瓷旁路电容,抑制输入瞬态和开关噪声;必要时增加电解/钽电容改善低频滤波。
  • 输出滤波与电容选择:输出电容选择要兼顾容量与 ESR,保证稳定性与低输出纹波。建议结合厂商的稳压环补偿要求选择低 ESR 的陶瓷或混合电容。
  • 电感选择:按允许的电流纹波(常取负载电流的20%~40%)选择合适电感量与饱和电流等级,确保在最大负载下不过饱和。
  • 布局与散热:高频开关节点、输入与输出电容、回流地应短且紧凑,尽量减小回流环路面积。ESOP-8 的底部或热母线应做好过孔散热与地平面连接,以提升热性能。
  • 启动与保护:如需限制浪涌或改善启动性能,可在输入端加入软启动或限流元件;评估系统对过流、过温的保护需求并设计相应电路。
  • EMC 考量:若为敏感应用,需在布局与滤波上下功夫,必要时加入输入共模/差模滤波器与屏蔽措施。

六、封装与可靠性

ESOP-8 封装便于工业级 PCB 装配与热扩散,但在高功率或长时间满载场景下需注意导热路径与铜箔厚度。工作温度范围为 -40℃~+85℃(TA),常见工业环境可直接应用;如需在更苛刻环境使用,请评估完整的热阻与降额设计。

七、总结

MP1484(JSMSEMI)是一款针对中小功率降压场景优化的同步整流开关稳压器,具有输入宽、效率潜力高、外部元件少、工作电流达3A 等优点。合理选型电感与电容、优化 PCB 布局与散热,可以在通信、工业、嵌入式等多类产品中实现稳定可靠的电源转换。若需进一步的电气参数曲线、典型电路图或参考设计,请参考厂方技术手册或联系供应商获取评估板资料。

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