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RT6256B/C是採用改進型固定導通時間 (ACOT®) 控制架構的同步Buck轉換器,具有非常快速的瞬態回應速度。RT6256B的工作電壓範圍是4.5V至23V,RT6256C的工作電壓範圍是5.5V至23V。

應用

  • 工商業低功率系統
  • 電腦週邊
  • 液晶顯示器和電視機
  • 節能電器
  • 高性能DSP、FPGA、ASIC負載點調節器
主要規格
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)
關鍵特性
  • 輸入電壓範圍:4.5V~23V(RT6256B),5.1V~23V(RT6256C)
  • 負載能力:6A
  • ACOT™控制架構,瞬態回應速度快,容許使用陶瓷電容為輸出電容
  • 固定工作頻率:750kHz(RT6256C),500kHz(RT6256B)
  • 集成30mΩ/15mΩ功率開關
  • 集成100mA負載能力3.3V(RT6256B)/5V(RT6256C)線性穩壓器
  • 軟起動設計
  • 逐週期過流限制保護
  • 輸入欠壓鎖定保護
  • 過熱關機保護
  • 輸出過壓、欠壓保護
  • 輕載超聲工作模式
Technical Documents
TitleItem TypeLast UpdateDownload
立錡全系列產品選擇指南 [Jan., 2024] Selection Guide2024/01/19
Reference Design
TitleLast UpdateDownload
立錡負載暫態量測工具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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