Vishay's Range of Cutting Edge, Smart Load Switches

By Sarah RonkoskeSeptember 11, 2017

Vishay, a global manufacturer of industry-leading power semiconductor products, has introduced its range of smart load switches for power distribution, sequencing, and protection. The smart load switches are integrated low-resistance power switches with optimized features that are ideal for various circuit design considerations.

Vishay's smart load switches provide resistance ranges from 100 mΩ down to 6.5 mΩ. Offered in compact packages, they incorporate advanced features like reverse blocking, output discharge, turn-on slew rate, under voltage lockout, and overcurrent protection.

The key functionalities, advantages, and applications of the cutting-edge smart load switches are as follows.

SiP32458, SiP32459

The SiP32458 and SiP32459 are 20 mΩ switches that integrate an adaptive charge pump to drive the PMOS gate when turned on. The switches offer excellent low and flat RDS (ON) over a wide Vin range without impeding the operating quiescent current.

Features and Benefits of SiP32458, SiP32459

  • Wide operating voltage range: 1.5 V to 5.5 V
  • 20 mΩ low and flat RDS(ON) over the full voltage range
  • Low quiescent current of 2.8 μA at 3 V
  • Low logic control EN with integrated pull-down resistor
  • Reverse blocking functionality at turn-off

Applications of SiP32458, SiP32459

  • Smartphones, PDAs, cell phones
  • Handheld instrumentation and PCs
  • Handheld POS
  • Data storage

SiP32101, SiP32102, and SiP32103

The SiP32101, SiP32102, and SiP32103 ultra-low-resistance bi-directional switches are offered in compact 12-bump WCSP 1.3 mm X 1.7 mm packages, which enable almost 91 % smaller PCB footprint over discrete solutions. The smart switches offer the lowest resistance for bi-directional battery-isolated switches.

Features and Benefits of SiP32101, SiP32102, and SiP32103

  • Ultra-low switch resistance: 6.5 mΩ at 3.3 V
  • 5 A DC current capability
  • Wide input voltage range: 2.3 V to 5.5 V
  • Bidirectional ON and OFF switching
  • Low quiescent current: 0.015 nA typical
  • 1.4 V logic high for direct low-voltage control interface
  • Slew rate control
  • EN pin with integrated 500 KΩ pull resistor

Applications of SiP32101, SiP32102, SiP32103

  • Smartphones and tablets
  • Power bank and battery
  • Portable meters and test instruments
  • Communication devices with embedded batteries
  • Portable medical and healthcare systems
  • Data storage

SiP4282 and SiP32431

The SiP4282 and SiP32431 feature 40 pA ultra-low-quiescent-current load. The switches leverage exceptional advantages in designs that require long standby time with limited battery size.

Features and Benefits of SiP4282 and SiP32431

  • Wide operating voltage range: 1.5 V to 5.5 V
  • 100 μs and 1 ms slew rate options
  • Low switch ON resistance: 100 mΩ
  • Featuring output discharge, reverse blocking, and under voltage lockout
  • Compact TDFN4 1.2 mm by 1.6 mm package

Applications of SiP4282 and SiP32431

  • Portable instruments
  • Healthcare devices
  • Smartphones / cellular phones
  • PMP, GPS, DSC
  • Smart meters

SiP32419, SiP32429, and SiP32430  

The SiP32419, SiP32429, and SiP32430 programmable over-current protection smart load switches incorporate outstanding features that improve controllability and safety. Ultra-fast 1 μs short-circuit response and thermal shutdown feature integrated into the smart switches provide heightened levels of protection.

Features and Benefits of SiP32419, SiP32429, and SiP32430

  • Wide operation voltage range: 6 V to 28 V
  • Programmable switch turn-on
  • Adjustable current limit
  • < 1 μs short-circuit protection response time
  • Over-temperature protection
  • Input undervoltage lockout
  • Convenient low-voltage control logic
  • Power Good and Fault Flag outputs with blanking time
  • Compact DFN10 3 mm by 3 mm package
  • SiP32419 latches off on Fault
  • SiP32429 and SiP32430 auto retry after 150 ms

Applications of SiP32419, SiP32429, and SiP32430

  • Industrial
  • Telecommunication
  • Data storage, HDD, SSD
  • Portable equipment
  • Motor drivers
  • Digital cameras
  • Computing
  • Medical and healthcare equipment
  • Smart meters

Vishay's range of smart load switches is offered in compact plastic package options as well as wafer-level chip-scale packages. The chip-scale package features a unique top-side lamination to enhance the reliability during SMT handling.

To know more about this range of products, please contact WPGA Specialist Sarah Ronkoske.