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6A, 23V, 500kHz, ACOT® Synchronous Buck Converter

RT6220

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The RT6220 is a synchronous Buck converter with Advanced Constant On-Time (ACOT® ) mode control, which provides a very fast transient response with no external compensators. The RT6220 operates from 4.5V to 23V input voltage, provides complete protection functions including Over Current Protection (OCP), Under Voltage Protection (UVP) and Over Voltage Protection (OVP). This IC also provides a 1.5ms internal soft-start function and an open-drain power good indicator.

应用

  • Laptop Computers
  • Tablet PCs
  • Networking Systems
  • Servers
  • Personal Video Recorders
  • Flat Panel Television and Monitors
  • Distributed Power Systems
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
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;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 UQFN3x3-16(FC) UQFN3x3-16(FC)
关键特性
  • 4.5V to 23V Input Voltage Range
  • Adjustable from 0.6V to 5V Output Range
  • Up to 98% Duty for 2S Battery Application
  • 500kHz Switching Frequency
  • ACOT® Mode Performs Fast Transient Response
  • Integrated MOSFETs
    ► 31mΩ of High-Side MOSFET
    ► 20mΩ of Low-Side MOSFET
  • Supports MLCC Output Capacitors
  • Internal Soft-Start (1.5ms typ)
  • Built-in OVP/UVP/OCP
  • Power Good Indicator
  • Thermal Shutdown
Datasheet
TitleLast UpdateShareDownload
6A, 23V, 500kHz, ACOT® Synchronous Buck Converter2014/10/30
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
工业、 汽车和LED照明应用的宽输入电压范围DC/DC电源转换方案2019/12/12
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
Reference Design
TitleLast UpdateShareDownload
立锜负载瞬变测试工具2018/11/01
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