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70mΩ/55mΩ, 3A/2.5A/2A/1.5A/1A/0.5A High-Side Power Switches with Flag

RT9742

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The RT9742 is a cost-effective, low-voltage, single
N-MOSFET high-side Power Switch IC for USB application. Low switch-on resistance and low supply current are realized in this IC.

The RT9742 integrates an over-current protection circuit, a short fold back circuit, a thermal shutdown circuit and an under-voltage lockout circuit for overall protection. Besides, a flag output is available to indicate fault conditions to the local USB controller. Furthermore, the chip also integrates an embedded delay function to prevent miss-operation from happening due to inrush-current. The RT9742 is an ideal solution for USB power supply and can support flexible applications since it is available in TSOT-23-5, TSOT-23-5 (FC) and SOT-23-3 package.

Applications

Key Spec.
RT9742A RT9742B RT9742C RT9742D RT9742E RT9742F RT9742G RT9742H RT9742J RT9742K RT9742L RT9742M RT9742N RT9742P RT9742Q RT9742R RT9742S RT9742U
Status 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
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
Vin (max) (V) 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 55 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
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
FLAG Indicator Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Iocp Adjustable 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
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
Package Type SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC) SOT-23;TSOT-25;TSOT-25(FC)
Features
  • 70mΩ/55mΩ (typ.) N-MOSFET Switch
  • Operating Range : 2.7V to 6V
  • Reverse Blocking Current
  • Under Voltage Lockout
  • Deglitched Fault Report (FLG)
  • Thermal Protection with Fold-back
  • Over Current Protection
  • Short Circuit Protection
  • UL Approved-E219878
  • Nemko Approved-NO87949
Datasheet
TitleLast UpdateShareDownload
70mΩ/55mΩ, 3A/2.5A/2A/1.5A/1A/0.5A High-Side Power Switches with Flag2015/07/20
Technical Documents
TitleLast UpdateShareDownload
Analyzing VIN overstress in Power ICs2016/10/19
Videos
TitleLast UpdateShareViews
How to Select a Power Management Component for Your Application2014/10/28 175
Evaluation Boards
TitleLast UpdateShareDownload
55mΩ, 3A High-Side Power Switches with Flag2018/11/08
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT9742AGJ5FTSOT-25(FC)3000 Not available Buy from Distributor
RT9742ANGJ5FTSOT-25(FC)3000 Not available Buy from Distributor
RT9742CGJ5TSOT-253000 Request Buy from Distributor
RT9742CGJ5FTSOT-25(FC)3000 Not available Buy from Distributor
RT9742CNGJ5TSOT-253000 Request Buy from Distributor
RT9742CNGJ5FTSOT-25(FC)3000 Not available Buy from Distributor
RT9742EGJ5TSOT-253000 Request Buy from Distributor
RT9742EGJ5FTSOT-25(FC)3000 Not available Buy from Distributor
RT9742ENGJ5TSOT-253000 Not available Buy from Distributor
RT9742ENGJ5FTSOT-25(FC)3000 Not available Buy from Distributor
RT9742GGJ5TSOT-253000 Request Buy from Distributor
RT9742GNGJ5TSOT-253000 Not available Buy from Distributor
RT9742GNGJ5FTSOT-25(FC)3000 Not available Buy from Distributor
RT9742JNGVSOT-233000 Not available Buy from Distributor
RT9742KNGVSOT-233000 Not available Buy from Distributor
RT9742LNGVSOT-233000 Not available Buy from Distributor
RT9742MNGJ5TSOT-253000 Not available Buy from Distributor
RT9742SNGVSOT-233000 Not available Buy from Distributor
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