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RT7291A/RT7291B

含 5V 线性稳压器的 23V, 6A, 500kHz, ACOT® 同步 Buck 转换器

RT7291A/RT7291B
New

RT7291A/B 是采用 ACOT® 控制架构的同步 Buck 转换器，无需使用外部补偿元件即可拥有极快的瞬态响应特性。它可在 5V~23V 输入电压范围内工作，且另有一个 5V 的线性稳压器输出和一个可以驱动外部电荷泵电路的 300kHz 时钟信号输出，过流保护、欠压保护、过压保护等完整的保护特性也包含其中，还有 1.5ms 的软启动设计和开漏 Power Good 指示信号输出。

应用

  • 便携式电脑
  • 平板电脑
  • 网络设备
  • 服务器
  • 视频录像机
  • 平板电视和监视器
  • 分布式电源系统

主要规格

RT7291A RT7291B
Status Active Active
Vin (min) (V) 5 5
Vin (max) (V) 23 23
Number of Outputs 1 1
Vout (min) (V) 4.95 5.049
Vout (max) (V) 5.05 5.151
Output Adj. Method Fixed Fixed
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 0.1
Features ACOT Control;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;Internal Compensation;Low Dropout;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP ACOT Control;Built-in Bootstrap Switch;COT Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;Internal Compensation;Low Dropout;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP
Package Type UQFN3x3-16(FC) UQFN3x3-16(FC)

关键特性

  • 输入电压范围：5V~23V

  • 98% 最大占空比，支持 2 节电芯配置

  • PWM 工作频率：500kHz

  • 采用 ACOT® 控制架构，瞬态响应速度快

  • 集成 31mΩ/20mΩ MOSFET 功率开关

  • 稳定配合 MLCC 输出电容

  • 1.5ms 内置软启动

  • 内建 OVP/UVP/OCP

  • Power Good 指示

  • 300kHz 固定时钟信号支持电荷泵工作

  • 各通道独立的使能信号

  • 过热关机保护

Application Notes

Datasheet

DS7291AB-04.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

DS7291AB-04.pdf

RT7291AGQUF
Package Type:UQFN3x3-16(FC)
样品 购买
RT7291BGQUF
Package Type:UQFN3x3-16(FC)
样品 购买
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