LQ05021QCS4 Series - 5 V, 2 A Ultra Low Consumption Load Switch with Slew Rate Control

Series: LQ05021QCS4
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This technical briefing is a brief introduction about Littelfuse load switch ICs features, benefits and applications.
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The LQ05021QCS4 is an ultra-efficiency, 2.0 A rated, load switch with integrated slew rate control. The best in class efficiency makes it an ideal choice for use in IoT, mobile, and wearable electronics.

It supports the lowest quiescent current (IQ) and shutdown current (ISD) in the industry. Low IQ and ISD solutions help designers to reduce parasitic leakage current, improve system efficiency, and increase battery lifetime.

The LQ05021QCS4 integrated slew rate control can also enhance system reliability by mitigating bus voltage swings during switching events. Where uncontrolled switches can generate high inrush currents that result in voltage droop and/or bus reset events, the slew rate control specifically limits inrush current during turn-on to minimize voltage droop.

The LQ05021QCS4 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 LQ05021QCS4 load switch device is small utilizing a wafer level 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 bump pitch.

Features & Benefits:

  • Ultra-low IQ: 1 nA Typ @ 5.5 VIN
  • Ultra-low ISD: 19 nA Typ @ 5.5 VIN
  • Low RON = 34 mΩ Typ @ 5.5 VIN
  • IOUT max = 2.0 A
  • Wide input range: 1.1 V to 5.5 V, 6 Vabs max
  • Controlled rise time: 430 μs at 3.3 VIN
  • Internal EN pull-down resistor
  • Integrated output discharge switch
  • Ultra small: 4 bumps in a 0.77 mm x 0.77 mm x 0.46 mm WLCSP

Applications:

  • Mobile devices
  • Data storage, SSD
  • IoT devices
  • Wearables
  • 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
LQ05021QCS41.1 ~ 5.56234119WLCSP4 (0.77x0.77)430LQ05021QCS4CheckOrder
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