WMSIC Electronic Components

RICHTEK RT7285CGJ6

ModelRT7285CGJ6
PackageTSOT-23-6L
BrandRICHTEK
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

20 specifications

Core information

Product name
RICHTEK RT7285CGJ6
Type
RICHTEK
Unit
Electronic Component
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
RICHTEK
Electronic Component
RT7285CGJ6
Electronic Component
1
Package
TSOT-23-6L
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.023g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0230063868
Operating Temperature
40℃~+85℃@(TA)
Operating Voltage
4.3V~18V
Switching Frequency
500kHz
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.

RT7285CGJ6 产品概述

一、产品简介

RT7285CGJ6 是 RICHTEK(立锜)推出的一款降压型 DC-DC 转换器,采用降压拓扑并集成同步整流开关管,适用于输入电压范围 4.3V 至 18V 的系统。器件输出电压可调(600mV 至 8V),最大输出电流 1.5A,开关频率 500kHz,静态电流仅 500µA,工作温度范围为 -40℃ 至 +85℃,封装为 TSOT-23-6L。内置开关管和同步整流设计可降低外部元件数量和系统损耗,适合空间受限、需高效率的中小功率电源应用。

二、主要技术参数

  • 功能类型:降压型(Buck)
  • 输入电压:4.3V ~ 18V
  • 输出电压:600mV ~ 8V(可调)
  • 最大输出电流:1.5A
  • 开关频率:500kHz
  • 同步整流:内置(同步)
  • 静态电流(Iq):500µA
  • 开关管:内置
  • 输出通道数:单通道
  • 封装:TSOT-23-6L
  • 工作温度:-40℃ ~ +85℃(TA)

三、典型应用场景

  • 电池供电设备(需注意输入下限及电池放电曲线)
  • 工业控制模块与通信终端的辅助电源
  • 便携式仪器、消费电子小功率主电源
  • 需要中等电流(约 ≤1.5A)但追求体积与元件数优化的场合

四、设计与选型建议

  • 输入输出电容:优先选择低 ESR 的陶瓷电容以降低纹波和提高瞬态响应。输入侧应靠近芯片放置去耦电容以抑制开关干扰;输出侧根据负载纹波要求选配足够容值并注意容差/温升后的有效容量。
  • 电感选型:选用额定电流高于最大输出电流且具有低 DCR 的电感。电感值按所需纹波电流与开关频率计算,兼顾体积与效率。
  • 热设计:虽然芯片内置开关,仍需关注封装散热能力。高占空比或靠近额定电流时,应保证良好 PCB 散热(增加铜箔面积、热vias)。
  • 布局要点:开关节点(LX)走线要短且远离敏感模拟地;输入电容、输出电容与芯片地尽量共地回流,减少环路面积以降低 EMI。参考原厂评估板布局以获得最佳性能。
  • 滤波与 EMI:500kHz 的开关频率处于中频段,必要时在输入端增加共模或差模滤波器,输出端可并联电感或 RC 滤波以满足系统 EMI 要求。

五、优势与注意事项

优势:内置同步整流与开关管降低外部 MOSFET 需求、减小 BOM;可调输出覆盖宽范围电压,适应多种负载需求;静态电流低适合电池供电场景。
注意事项:在最终设计前请查阅 RT7285CGJ6 的完整数据手册,确认保护功能(如过流、欠压、过温)、启动特性、使能/反馈引脚要求、软启动与环路稳定性等细节;并依据目标应用进行可靠性验证与 EMI 测试。

如需原始数据手册、电路参考或布局示例,请以器件型号向立锜索取完整资料,以保证设计的一致性与可靠性。

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