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RT9742 是用於 USB 應用的低成本、低壓高側功率開關，同時具備低導通電阻和低電流消耗的特性。
它集成了過流保護電路、短路電流折返電路、熱關機保護電路和欠壓鎖定保護電路以實現所有的保護功能，有故障指示輸出可向USB控制器指示故障狀態，還集成了延時功能以防止衝擊電流所造成的誤操作。它是 USB 電源應用的理想選擇，也同時支援其它靈活的應用，其封裝形式有 TSOT-23-5、TSOT-23-5 (FC)與SOT-23-3。

應用

  • USB設備
  • 筆記型電腦
主要規格
RT9742A RT9742B RT9742C RT9742D RT9742E RT9742F RT9742G RT9742H RT9742J RT9742K RT9742L RT9742M RT9742N RT9742P RT9742Q RT9742R RT9742S RT9742U RT9742V
Status Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active
Number of Outputs 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Vin (min) (V) 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7
Vin (max) (V) 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6
Ron (typ) (mOhm) 55 55 55;70 55;70 55;70 55;70 55;70 55;70 70 70 70 70 55;70 55 70 70 70 70 70
Iq (typ) (mA) 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03
Current Limit (typ) (A) 3.3 3.3 2.2 2.2 1.65 1.65 1.1 1.1 2.15 1.65 1.1 1.65 2.75 2.75 0.7 0.7 0.7 1.65 2.2
FLAG Indicator Yes Yes Yes Yes Yes Yes Yes Yes No No No Yes Yes Yes Yes Yes No Yes Yes
Iocp Adjustable No No No No No No No No No No No No No No No No No No No
Safety Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL Nemko;UL
Switch Type Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch Power Switch
Features Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP Enable Input;OCP;SCP
Package Type TSOT-25(FC) TSOT-25(FC) TSOT-25;TSOT-25(FC) TSOT-25;TSOT-25(FC) TSOT-25;TSOT-25(FC) TSOT-25;TSOT-25(FC) TSOT-25;TSOT-25(FC) TSOT-25;TSOT-25(FC) SOT-23 SOT-23 SOT-23 TSOT-25 TSOT-25(FC) TSOT-25(FC) TSOT-25 TSOT-25 SOT-23 TSOT-25 TSOT-25
關鍵特性
  • 70mΩ/55mΩ（典型值） N-MOSFET 開關
  • 工作電壓範圍：2.7V~6V
  • 具有反向電流阻止能力
  • 欠壓鎖定保護
  • 可消除抖動的故障指示
  • 具有電流折返特性的過熱保護
  • 過流保護
  • 短路保護
  • UL認證編號：E219878
  • Nemko認證編號：NO87949
Technical Documents
TitleItem TypeLast UpdateDownload
電源IC輸入端的過應力分析 App. Note2016/07/01
Part NumberPackage TypePackage Qty.Free SampleDistributorStockBuy From Authorized Distributor
RT9742AGJ5FTSOT-25(FC)3,000 Request Digikey 2,641 Buy
Mouser 1,902 Buy
RT9742ANGJ5FTSOT-25(FC)3,000 Request Digikey 7,618 Buy
Mouser 1,860 Buy
RT9742BGJ5FTSOT-25(FC)3,000 Request Digikey 1,331 Buy
Mouser 3,979 Buy
RT9742CGJ5TSOT-253,000 Request Digikey 1,335 Buy
Mouser 2,625 Buy
RT9742CGJ5FTSOT-25(FC)3,000 Request Digikey 20,524 Buy
Mouser 3,567 Buy
RT9742DGJ5TSOT-253,000 Request Digikey 2,807 Buy
Mouser 0 Lead-Time: 14 weeks
RT9742EGJ5TSOT-253,000 Request Digikey 4,669 Buy
Mouser 4,845 Buy
RT9742FGJ5TSOT-253,000 Request Digikey 767 Buy
Mouser 0 Lead-Time: 14 weeks
RT9742GGJ5TSOT-253,000 Request Digikey 5,806 Buy
Mouser 4,728 Buy
RT9742QGJ5TSOT-253,000 Request Digikey 3,688 Buy
Mouser 2,438 Buy
RT9742QNGJ5TSOT-253,000 Request Digikey 632 Buy
Mouser 2,799 Buy
RT9742SNGVSOT-233,000 Request Digikey 0 Lead-Time: 14 weeks
Mouser 4,081 Buy
RT9742UNGJ5TSOT-253,000 Request Digikey 1,226 Buy
Mouser 2,644 Buy
RT9742VGJ5TSOT-253,000 Request Digikey 3,520 Buy
Mouser 5,796 Buy
Evaluation Board
Part NumberDistributorStockBuy From Authorized Distributor
EVB_RT9742AGJ5F Digikey 0 Lead-Time: 14 weeks
Mouser 4 Buy
庫存實際狀況請洽代理商或業務窗口
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