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Dual Channel, Ultra-Low Resistance Load Switch

RT9740A

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The RT9740A is a small, ultra-low RON, dual channel load switch with EN controlled pin. The product contains two N-MOSFETs that can operate between an input voltage range of 0.8V to 5.5V. Also, it supports a maximum continuous current of 6A each channel. Each switch is independently controlled by EN pins (EN1 and EN2), which can directly interface with low-voltage control signals.

The RT9740A is available in the WDFN-14TL 3x2 package with exposed pad for high power and heat dissipation.

Applications

  • UltrabookTM
  • Notebooks/Netbooks
  • Tablet PC
  • Consumer Electronics
  • Set-Top Boxes/Residential Gateways
  • Telecom Systems
  • Solid State Drives (SSD)
Key Spec.
RT9740A
Status Active
Number of Outputs 2
Vin (min) (V) 0.8
Vin (max) (V) 5.5
Ron (typ) (mOhm) 18
Iq (typ) (mA) 0.055;0.075
Current Limit (typ) (A) 6
FLAG Indicator No
Iocp Adjustable No
Switch Type Load Switch
Features Adjustable Soft-Start;Enable Input;Low Dropout
Package Type WDFN3x2-14T
Features
  • Integrated Dual Channel Load Switch
  • Input Voltage Range : 0.8V to 5.5V
  • Ultra-Low RON Resistance
    ► RON = 18mΩ at VIN = 5V (VDD = 5V)
    ► RON = 18mΩ at VIN = 3.6V (VDD = 5V)
    ► RON = 18mΩ at VIN = 1.8V (VDD = 5V)
  • 6A Maximum Continuous Switch Current Per Channel
  • Low Quiescent Current
    ► 75μA (Both Channels)
    ► 55μA (Single Channel)
  • Low Control Input Threshold Enables Use of 1.4V/1.8V/2.5V/3.3V Logics
  • Configurable Rise Time
  • Quick Output Discharge (QOD)
  • Adaptive Discharge Current
  • 14T-Lead WDFN Package with Thermal Pad
  • RoHS Compliant and Halogen Free
Datasheet
TitleLast UpdateShareDownload
Dual Channel, Ultra-Low Resistance Load Switch2014/02/17
Technical Documents
TitleLast UpdateShareDownload
Richtek Selection Guide [Oct., 2020]2020/12/30
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