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RT6256B/C是采用改进型固定导通时间 (ACOT®) 控制架构的同步Buck转换器,具有非常快速的瞬态响应速度。RT6256B的工作电压范围是4.5V至23V,RT6256C的工作电压范围是5.5V至23V。

应用

  • 工商业低功率系统
  • 计算机外设
  • 液晶显示器和电视机
  • 节能电器
  • 高性能DSP、FPGA、ASIC负载点调节器
主要规格
RT6256B RT6256C
Status Active Active
Vin (min) (V) 4.5 5.1
Vin (max) (V) 23 23
Number of Outputs 1 1
Vout (min) (V) 3.267 5.049
Vout (max) (V) 3.333 5.151
Output Adj. Method Fixed Fixed
Iout (max) (A) 6 6
Current Limit (typ) (A) 8.4 8.4
Freq (typ) (kHz) 500 750
Ext Sync No No
Ron_HS (typ) (mOhm) 30 30
Ron_LS (typ) (mOhm) 15 15
Iq (typ) (mA) 0.1 0.1
Features ACOT Control;Built-in Bootstrap Switch;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;OCP;OTP;OVP;PSM;Power Good;Stable with Ceramic Capacitor;UVP;Ultrasonic Mode Control ACOT Control;Built-in Bootstrap Switch;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;OCP;OTP;OVP;PSM;Power Good;Stable with Ceramic Capacitor;UVP;Ultrasonic Mode Control
Package Type UQFN3x3-12H(FC) UQFN3x3-12H(FC)
关键特性
  • 输入电压范围:4.5V~23V(RT6256B),5.1V~23V(RT6256C)
  • 负载能力:6A
  • ACOT™控制架构,瞬态响应速度快,容许使用陶瓷电容为输出电容
  • 固定工作频率:750kHz(RT6256C),500kHz(RT6256B)
  • 集成30mΩ/15mΩ功率开关
  • 集成100mA负载能力3.3V(RT6256B)/5V(RT6256C)线性稳压器
  • 软起动设计
  • 逐周期过流限制保护
  • 输入欠压锁定保护
  • 过热关机保护
  • 输出过压、欠压保护
  • 轻载超声工作模式
Technical Documents
TitleItem TypeLast UpdateDownload
立锜全系列产品选择指南 [Jan., 2024] Selection Guide2024/01/19
Reference Design
TitleLast UpdateDownload
立锜负载瞬变测试工具2018/11/01
Part NumberPackage TypePackage Qty.Free SampleDistributorStockBuy From Authorized Distributor
RT6256BGQUFUQFN3x3-12H(FC)1,500 Request Digikey 1,383 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
RT6256CGQUFUQFN3x3-12H(FC)1,500 Request Digikey 1,477 Buy
Mouser Lead-Time: 14 weeks Not Available
WPG Lead-Time: 14 weeks Not Available
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