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Richtek

4A, 23V, 500kHz, ACOT® 同步 Buck 转换器

RT6219

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RT6219 是采用 ACOT® 控制架构的同步 Buck 转换器,无需使用外部补偿组件即可拥有极快的瞬态响应特性。其输入电压范围为 5V~23V,具有过流保护、欠压保护、过压保护等完整的保护特性,还有 1.5ms 软启动时间和开漏 Power Good 输出。

应用

  • 笔记本电脑
  • 平板电脑
  • 网通系统
  • 服务器
  • PVR
  • 平板电视和监视器
  • 分布式电源系统
主要规格
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
关键特性
  • 输入电压范围:5V~23V
  • 输出电压可调范围: 0.6V~5V
  • 占空比最大值可达 98%
  • 500kHz 工作频率
  • ACOTTM 控制架构,具有超快瞬态响应
  • 集成 MOSFET
    ► 上桥67mΩ
    ► 下桥 41mΩ
  • 支持 MLCC 为输出电容
  • 内置软启动 (1.5ms)
  • 内建 OVP/UVP/OCP
  • Power Good 指示
  • 过热关机保护
Datasheet
TitleLast UpdateShareDownload
4A, 23V, 500kHz, ACOT® 同步 Buck 转换器2018/01/09
Technical Documents
TitleLast UpdateShareDownload
ACOT™ (Advanced Constant-On Time) Synchronous Step-Down Converters2019/12/13
Buck转换器的选择标准2019/12/12
The Calculation of Output DC Offset for ACOT™ Control Buck Converter with Feed-forward Compensator2019/12/12
降压转换器架构之比较2019/12/12
ACOT™ Stability Testing2019/12/12
Videos
TitleLast UpdateShareViews
怎样使用简单工具对电源转换器的稳定性进行测试评估?2017/03/30 587
Evaluation Boards
TitleLast UpdateShareDownload
4A, 23V, 500kHz, ACOT™ Synchronous Buck Converter2017/09/04
Reference Design
TitleLast UpdateShareDownload
立锜负载瞬变测试工具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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