AGREE

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RT9742

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

RT9742
New Hot

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

  • USB Peripherals
  • Notebook PCs

Key Spec.

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

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-NO109777

Application Notes

Datasheet

DS9742-10.pdf

Videos

How to Select a Power Management Component for Your Application

Datasheet

DS9742-10.pdf

RT9742AGJ5F
Package Type:TSOT-25(FC)
Sample Buy
RT9742ANGJ5F
Package Type:TSOT-25(FC)
Sample Buy
RT9742BGJ5F
Package Type:TSOT-25(FC)
Sample Buy
RT9742CGJ5
Package Type:TSOT-25
Sample Buy
RT9742CGJ5F
Package Type:TSOT-25(FC)
Sample Buy
RT9742DGJ5
Package Type:TSOT-25
Sample Buy
RT9742EGJ5
Package Type:TSOT-25
Sample Buy
RT9742FGJ5
Package Type:TSOT-25
Sample Buy
RT9742GGJ5
Package Type:TSOT-25
Sample Buy
RT9742QGJ5
Package Type:TSOT-25
Sample Buy
RT9742QNGJ5
Package Type:TSOT-25
Sample Buy
RT9742SNGV
Package Type:SOT-23
Sample Buy
RT9742VGJ5
Package Type:TSOT-25
Sample Buy
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