WMSIC Electronic Components

RICHTEK RT6576DGQW

ModelRT6576DGQW
PackageWQFN-20L
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RICHTEK RT6576DGQW
Type
RICHTEK
Minimum package
1500

Technical parameters

Electronic Component
RICHTEK
Electronic Component
RT6576DGQW
Electronic Component
1
Package
WQFN-20L
Electronic Component
Charge Pump
Electronic Component
0.13g
PFM
Electronic Component
Electronic Component
1
Features
Switching Frequency;;; Output
Type
Electronic Component
Electronic Component
BM0264871445
Operating Temperature
40℃~+85℃
Operating Voltage
5V~25V
Switching Frequency
25kHz
Static Current(Iq)
15uA
Electronic Component
1500

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

RT6576DGQW 产品概述

一、概述

RT6576DGQW 是台湾立锜(RICHTEK)推出的一款高效降压型 DC-DC 电源管理芯片,采用外置电感方案,封装为 WQFN-20-EP (3×3)。芯片支持宽输入电压范围与低静态电流设计,适用于需要高效率、低待机功耗及多重保护的嵌入式和工业电源场景。

二、主要电气特性

  • 功能类型:降压(Buck)
  • 输入电压范围:5V ~ 25V
  • 输出电压范围:版本可配置 2.0V ~ 5.5V(另有 2.0V ~ 4.0V 规格)
  • 静态电流 Iq:15 μA(低待机电流)
  • 开关频率:25 kHz(自适应开关频率)
  • PFM 支持:轻载时进入脉宽调制(PFM)以提升效率
  • 工作温度:-40 ℃ ~ +85 ℃

三、功能特性与保护

芯片具备自适应开关频率控制,可在不同负载条件下自动调整工作频率以优化效率与热耗;支持 PFM 模式以降低轻负载下的耗电。保护功能全面,包括过流保护(OCP)、软启动(soft-start)以抑制开机瞬间浪涌、电源输出短路保护等,能在异常工况下限制输出并实现自动恢复,提升系统可靠性。

四、设计与应用建议

  • 外部元件:选用适配的外置电感与低 ESR 输出电容,电感需满足峰值电流及低 DCR 要求以降低损耗。
  • 布局:电感、开关管、二极管/电感及输入/输出电容尽量紧凑布局,减小功率环路面积;MOSFET 引脚与散热焊盘应与地平面良好相连并布置热通孔。
  • 滤波与纹波:25 kHz 为较低开关频率,虽有利于降低开关损耗和 EMI,但会使外部电感与电容体积相对增大;需在尺寸与性能间权衡设计。
  • 启动与稳定性:利用芯片软启动特性可限制启动电流,避免上游电源过载;输出电容选型与 ESR 匹配对环路稳定性至关重要,建议按厂商参考电路选择器件。

五、封装与热管理

RT6576DGQW 采用 WQFN-20L 封装(带外露焊盘 EP),尺寸 3×3 mm,利于高密度 PCB 布局。外露焊盘用于散热并作为接地平面,推荐在 PCB 底部布置热通孔与大面积铜箔以提升散热性能,确保在高输入高负载条件下保持可靠工作温度。

六、适用场景与优势

凭借宽输入范围(适配 12V/24V 等系统)、低静态电流与 PFM 轻载高效特性,RT6576DGQW 非常适合电池供电或需长待机时间的便携设备、工业控制模块、通信设备及车载电子辅助电源等场合。其多重保护与软启动功能提升系统可靠性,WQFN-20-EP 封装有利于热管理与小尺寸设计。

总结:RT6576DGQW 提供了一套在宽输入电压、高效降压与低待机功耗之间的平衡方案,适合对可靠性与功耗有严格要求的中小功率电源设计。具体外部元件选型及电路参数请参阅器件详细数据手册以获得最佳性能。

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