LQ05021RCS4 Series - 5 V, 2 A Ultra Low Consumption Load switch with True Reverse Current Blocking               

Series: LQ05021RCS4
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This technical briefing is a brief introduction about Littelfuse load switch ICs features, benefits and applications.
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The LQ05021RCS4 is an advanced technology fully integrated load switch device with true reverse current blocking (TRCB) technology and the slew rate control of the output voltage. It offers industry leading true reverse current blocking (TRCB) performance, featuring an ultra-low threshold voltage. It minimizes reverse current flow in the event that the VOUT pin voltage exceeds the VIN voltage.

It has industry leading efficiency. It features a RON as low as 37 mΩ typical at 5.5 V, reducing power loss during conduction. The device also feature ultra-low shutdown current (ISD) to reduce power loss and battery drain in the off state. When EN is pulled low, and the output is grounded, It can achieve an ISD as low as 20 nA typical at 5.5 V.

The LQ05021RCS4 load switch device supports an industry leading wide input voltage range and helps to improve operating life and system robustness. Furthermore, one device can be used in multiple voltage rail applications which helps to simplify inventory management and reduces operating cost.

The LQ05021RCS4 load switch device is small utilizing a chip scale package with 4 bumps in a 0.77 mm x 0.77 mm x 0.46 mm die size and a 0.4 mm pitch.

Features & Benefits:

  • Wide input range: 1.5 V to 5.5 V, 6 Vabs max
  • True reverse current blocking
  • Ultra-low IQ: 0.45 μA Typ @ 5.5 VIN
  • Ultra-low ISD: 20 nA Typ @ 5.5 VIN
  • Low RON: 37 mΩ Typ @ 5.5 VIN
  • IOUT max: 2 A
  • Controlled VOUT rise time
  • Internal EN pull-down resistor on EN pin
  • Integrated output discharge switch

Applications:

  • Wearables
  • Mobile Devices
  • IoT Devices
  • Low Power Subsystems

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Access specifications, certifications, check availability and order parts below

Catalog #Operation Voltage (V)Vmax (V)Continuous Current (A)Ron (mΩ)Quiescent Current (µA)Shut Down Current (µA)PackageRise Time
(μs)		Partner ECAD ModelsStockSamples
LQ05021RCS41.5 ~ 5.5623745020WLCSP4 (0.77x0.77)570LQ05021RCS4CheckOrder
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