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RT6220是採用改進型固定導通時間ACOT®控制架構的同步Buck轉換器,無需使用外部補償元件而具有快速的瞬態回應能力,可在4.5V~23V輸入電壓下工作,具有過流保護、欠壓保護、過壓保護等完備的保護性設計,內建1.5ms軟啟動時間,提供開漏的Power Good指示信號輸出。

應用

  • 可擕式電腦
  • 平板電腦
  • 網路設備
  • 伺服器
  • 視頻錄影機
  • 平板電視和監視器
  • 分散式電源系統
主要規格
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)
關鍵特性
  • 輸入電壓範圍:4.5V~23V
  • 輸出電壓可調範圍:0.6V~5V
  • 占空比可高達98%,適用於兩節鋰離子電池供電的應用
  • 工作頻率:500kHz
  • 採用ACOT®控制架構,具備快速瞬態回應能力
  • 集成31mΩ/20mΩ上/下橋MOSFET功率開關
  • 容許使用MLCC輸出電容
  • 內建1.5ms軟啟動時間
  • 內建過壓保護、欠壓保護和過流保護功能
  • 過熱關機保護
Reference Design
TitleLast UpdateDownload
立錡負載暫態量測工具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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