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RT7243

6A, 18V同步降压型转换器

RT7243
New

RT7243 是一款可以从 4.5V-18V 的输入电源提供 6A 输出电流的高效、单芯片同步降压型 DC/DC 转换器。具有外部补偿的 RT7243 电流模式结构能使瞬态响应在大范围的负载和输出电容间进行优化。逐周期电流限制能提供针对短路输出的保护，软启动在启动期间能消除输入电流浪涌。故障状态保护包括输出欠压保护、输出过压保护和超温保护。低电流关断模式能提供输出断开的功能，实现电池供电系统中简单的电源管理。

应用

  • High Performance Point of Load Regulation
  • Notebook Computers
  • High Density and Distributed Power Systems

主要规格

RT7243
Status Active
Vin (min) (V) 4.5
Vin (max) (V) 18
Number of Outputs 1
Vout (min) (V) 0.8
Vout (max) (V) 15
Output Adj. Method Resistor
Iout (max) (A) 6
Current Limit (typ) (A) 11
Freq (typ) (kHz) 480
Freq (min) (kHz) 200
Freq (max) (kHz) 1600
Ext Sync Yes
Ron_HS (typ) (mOhm) 26
Ron_LS (typ) (mOhm) 19
Iq (typ) (mA) 0.6
Features 100% Duty Cycle;Adjustable Frequency;Adjustable Soft-Start;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;External Synchronization;Force PWM;OCP;OTP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type WQFN3.5x3.5-14A

关键特性

  • 低RDS(ON)功率金氧半场效晶体管开关26mΩ/19mΩ

  • 输入电压范围：4.5V-18V

  • 可调切换频率：200kHz-1.6MHz

  • 电流模式控制

  • 同步到外部时钟：200kHz to 1.6MHz

  • 精确的基准电压0.8V±1.25%

  • 单调启动至预偏置输出

  • 可调软启动

  • 电源正常指示器

  • 欠压和过压保护

  • 输入欠压锁定

  • 通过RoHS认证，且不含卤素

Application Notes

Datasheet

DS7243-06.pdf

Videos

怎样使用简单工具对电源转换器的稳定性进行测试评估?

Datasheet

DS7243-06.pdf

RT7243GQW
Package Type:WQFN3.5x3.5-14A
样品 购买

Evaluation Boards

EVB_RT7243GQW
购买
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