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Richtek

23V, 4A, 500kHz, ACOT® 同步 Buck 轉換器

RT6219

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RT6219 是採用 ACOT® 控制架構的同步 Buck 轉換器,無需使用外部補償元件即可擁有極快的瞬態回應特性。它可在 5V~23V 輸入電壓範圍內工作,具有過流保護、欠壓保護、過壓保護等保護特性,還有 1.5ms 的軟啟動設計和開漏 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
RT6219A RT6219B
Status Active Active
Vin (min) (V) 5 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) 4 4
Current Limit (typ) (A) 6 6
Freq (typ) (kHz) 500 500
Ext Sync No No
Ron_HS (typ) (mOhm) 67 67
Ron_LS (typ) (mOhm) 41 41
Iq (typ) (mA) 0.1 0.11
Features ACOT Control;Built-in Bootstrap Switch;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;OCP;OVP;PSM;Power Good;Stable with Ceramic Capacitor;UVP ACOT Control;Built-in Bootstrap Switch;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;Force PWM;OCP;OVP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type WDFN3x3-10 WDFN3x3-10
關鍵特性
  • 輸入電壓範圍:5V~23V
  • 輸出電壓可調範圍:0.6V~5V
  • 98% 最大占空比,支持 2 節電芯配置
  • PWM 工作頻率:500kHz
  • 採用 ACOT® 控制架構,瞬態回應速度快
  • 集成 67mΩ/41mΩ MOSFET 功率開關
  • 穩定配合 MLCC 輸出電容
  • 1.5ms 內置軟啟動
  • 內建 OVP/UVP/OCP
  • Power Good 指示
  • 過熱關機保護
Datasheet
TitleLast UpdateShareDownload
23V, 4A, 500kHz, ACOT® 同步 Buck 轉換器2018/01/09
Technical Documents
TitleLast UpdateShareDownload
ACOT™ (Advanced Constant-On Time) Synchronous Step-Down Converters2019/12/12
The Calculation of Output DC Offset for ACOT™ Control Buck Converter with Feed-forward Compensator2019/12/12
降壓轉換器架構之比較2019/12/12
降壓轉換器的選擇標準2019/12/12
ACOTTM 穩定度測試2019/12/12
Videos
TitleLast UpdateShareViews
如何使用簡單工具對電源轉換器的穩定性進行測試評估?2017/03/30 316
Evaluation Boards
TitleLast UpdateShareDownload
4A, 23V, 500kHz, ACOT™ Synchronous Buck Converter2017/09/04
Reference Design
TitleLast UpdateShareDownload
立錡負載暫態量測工具2018/11/01
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT6219AGQWWDFN3x3-101500 Not available Buy from Distributor
RT6219AHGQWWDFN3x3-101500 Not available Buy from Distributor
RT6219BHGQWWDFN3x3-101500 Not available Buy from Distributor
RT6219BLGQWWDFN3x3-101500 Not available Buy from Distributor
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