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RT6220是采用改进型固定导通时间ACOT®控制架构的同步Buck转换器,无需使用外部补偿元件而具有快速的瞬态响应能力,可在4.5V~23V输入电压下工作,具有过流保护、欠压保护、过压保护等完备的保护性设计,内建1.5ms软启动时间,提供开漏的Power Good指示信号输出。

应用

  • 便携式电脑
  • 平板电脑
  • 网络设备
  • 服务器
  • 视频录像机
  • 平板电视和监视器
  • 分布式电源系统
主要规格
RT6220A RT6220B
Status Active Active
Vin (min) (V) 4.5 4.5
Vin (max) (V) 23 23
Number of Outputs 1 1
Vout (min) (V) 0.6 0.6
Vout (max) (V) 5 5
Output Adj. Method Resistor Resistor
Iout (max) (A) 6 6
Current Limit (typ) (A) 9.5 9.5
Freq (typ) (kHz) 500 500
Ext Sync No No
Ron_HS (typ) (mOhm) 31 31
Ron_LS (typ) (mOhm) 20 20
Iq (typ) (mA) 0.1 0.11
Features ACOT Control;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;Internal Compensation;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP ACOT Control;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Force PWM;Internal Compensation;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP
Package Type UQFN3x3-16(FC) UQFN3x3-16(FC)
关键特性
  • 输入电压范围:4.5V~23V
  • 输出电压可调范围:0.6V~5V
  • 占空比可高达98%,适用于两节锂离子电池供电的应用
  • 工作频率:500kHz
  • 采用ACOT®控制架构,具备快速瞬态响应能力
  • 集成31mΩ/20mΩ上/下桥MOSFET功率开关
  • 容许使用MLCC输出电容
  • 内建1.5ms软启动时间
  • 内建过压保护、欠压保护和过流保护功能
  • 过热关机保护
Reference Design
TitleLast UpdateDownload
立锜负载瞬变测试工具2018/11/01
Part NumberPackage TypePackage Qty.Free SampleDistributorStockBuy From Authorized Distributor
RT6220AGQUFUQFN3x3-16(FC)1,500 Request Digikey 2,868 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT6220AHGQUFUQFN3x3-16(FC)1,500 Request Digikey 2 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG 293 Buy
RT6220BHGQUFUQFN3x3-16(FC)1,500 Request Digikey 2,900 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
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