WMSIC Electronic Components

Silergy SY7219DBC

ModelSY7219DBC
PackageDFN-10-EP(3x3)
BrandSILERGY
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 22+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
silergy SY7219DBC
Type
SILERGY
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SILERGY
Electronic Component
SY7219DBC
Electronic Component
1
Package
DFN-10-EP(3x3)
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.11g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0259314202
Operating Temperature
40℃~+125℃
Operating Voltage
3V~5.5V
Electronic Component
Electronic Component
Output Current
9A
Output Type
Electronic Component

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

矽力杰SY7219DBC高压大电流升压型电源IC产品概述

一、核心功能与拓扑架构

SY7219DBC是矽力杰针对高功率升压需求推出的同步整流型电源IC,采用升压式拓扑结构,内置高低侧功率MOSFET,无需外置开关管即可实现高压大电流输出。其核心设计围绕“效率优先、小型化、宽适配”展开——同步整流技术替代传统异步整流,能显著降低开关过程中的导通损耗,使轻载到满载的转换效率均保持在较高水平,尤其适合对电源损耗敏感的场景。

二、关键电气参数与应用适配性

  1. 宽输入电压范围:支持3V~5.5V输入,覆盖3.7V/4.2V锂电池、2节干电池串联及5V USB供电,适配便携式设备、车载低压系统等多种电源场景;
  2. 高输出电流能力:最大输出电流达9A,可支持45W以上升压功率(以5V输出为例),满足平板快充、工业手持设备等大功率负载需求;
  3. 低静态功耗:典型静态电流仅380uA,待机状态下几乎不消耗电池电量,有效延长电池供电设备的待机时间;
  4. 宽温度工作范围:-40℃~+125℃的工业级温度范围,可稳定工作于汽车发动机舱、户外工业设备等极端环境;
  5. 可调输出电压:通过外围分压电阻灵活设置输出电压(如3.3V、5V、9V等),适配不同负载的电压需求。

三、设计优势与典型应用场景

1. 核心设计优势

  • 内置MOS简化外围:无需外置高低侧开关管,减少BOM元件数量,同时缩小PCB占用空间,契合小型化设备设计趋势;
  • 同步整流提升效率:全负载范围(0.1A~9A)转换效率典型值达90%以上,降低电源损耗与发热,避免设备过热;
  • 小封装高散热:采用DFN3×3-10封装(尺寸3mm×3mm),热阻低且可通过PCB铜箔有效散热,适合大功率紧凑布局;
  • 宽温可靠性:工业级温度范围满足汽车电子、工业控制等恶劣环境的长期稳定工作要求。

2. 典型应用领域

  • 消费电子:便携式快充设备、平板/笔记本升压模块、大功率LED背光驱动;
  • 汽车电子:车载显示屏升压、行车记录仪供电、汽车传感器模块升压;
  • 工业设备:手持检测仪器、工业物联网终端升压供电;
  • 电池系统:高容量移动电源升压、应急照明设备升压。

四、外围电路与使用注意事项

SY7219DBC外围电路简单,仅需电感、输入/输出电容、分压电阻即可实现升压:

  • 电感选择:推荐10μH~22μH低DCR功率电感,额定电流需大于9A(避免饱和);
  • 电容选择:输入/输出电容建议采用10μF以上陶瓷电容,ESR需控制在10mΩ以内(降低纹波);
  • 分压电阻:输出电压计算公式为Vout=1.2V×(1+R1/R2),R1为上拉电阻,R2为下拉电阻。

使用注意:需加粗PCB电源走线(减少损耗),输入/输出电容靠近IC引脚(抑制纹波),避免电感远离IC导致电磁干扰。

五、总结

SY7219DBC凭借高输出电流、低静态功耗、宽温范围及小封装等优势,成为高功率升压应用的理想选择,尤其适合对空间、效率及可靠性有严格要求的便携式、汽车及工业设备领域,可有效降低系统设计复杂度与成本。

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