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Advanced Littelfuse Load Switch ICs Series For Wide Range of Electronics Designs

Littelfuse eFuse Load Switch Protection IC The Volt Post
Littelfuse Load Switch ICs

Littelfuse Protection ICs product line gets five new versatile load switch ICs. The new Littelfuse Load Switch ICs are ultra-efficient, sports 2 and 4-A-rated load switches. Also, the load switch ICs come with integrated true reverse current blocking (TRCB) and slew rate control.

The Littelfuse load switch ICs support the industry’s lowest quiescent current (IQ), low RON, and shutdown current (ISD).
The new Littelfuse Protection ICs product line helps designers reduce parasitic leakage current, improve system efficiency, and increase overall battery lifetime.  View the video.
“The new Load Switch IC Series supports an extended battery lifetime for mobile and wearable products by providing low power consumption and power savings with easy-to-power on/off control,” said Bernie Hsieh, Assistant Product Manager of the Protection Semiconductor Business team at Littelfuse. “Their package’s chip-scale form factor provides space savings while integrating multiple functions, such as slew rate control, true reverse current blocking, and quick output discharging.”

The Littelfuse Load Switch ICs offer the following key benefits over previous solutions:

  • Power saving results in a significantly longer battery lifetime.
  • The lower power consumption (lower RON, IQ, ISD) provides high-efficiency operation.
  • They use a chip-scale package (with WLCSP) to replace discrete circuits with multiple functional integrations such as power MOSFET, reverse diode, discharge MOSFET, passive components, etc.
  • The chip-scale-size form factor also significantly reduces PCB space requirement.

Ideal for use in a wide range of electronics designs, including:

  • Handheld devices,
  • Wearables,
  • Internet of Things (IoT),
  • SSD storage,
  • Building automation, and
  • Consumer electronics.

The Littelfuse Load Switch ICs are available in the following series:

  • LQ05021QCS4 – 5V, 2A Ultra-Low Consumption with Slew Rate Control
  • LQ05021RCS4 – 5V, 2A Ultra-Low Consumption with True Reverse Current Blocking
  • LQ05022QCS4 – 5V, 2A Ultra-Low Consumption with Slew Rate Control
  • LQ05041QCS6 – 5V, 4A, Ultra-Low Consumption with Slew Rate Control
  • LQ05041RCS6 – 5V, 4A Ultra-Low Consumption with True Reverse Current Blocking

The load switch devices utilize a small, chip-scale package with:

  • Four (4) bumps in a 0.77 mm x 0.77 mm x 0.46 mm package size on a 0.4 mm pitch,
  • Four (4) bumps in a 0.97 mm x 0.97 mm x 0.55 mm die size on a 0.4 mm pitch, or
  • Six (6) bumps in a 97 mm x 1.47 mm x 0.55 mm package size on a 0.5 mm pitch.

Availability

The Load Switch ICs are available in tape and reel format in quantities of 4,000 (LQ05021QCS4, LQ05021RCS4, LQ05022QCS4) or 3,000 (LQ05041QCS6, LQ05041RCS6). Place sample requests through authorized Littelfuse distributors worldwide. For a listing of Littelfuse distributors, please visit Littelfuse.com.

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