Kinetic Technologies Releases Surge Protected Load Switches with Over-voltage Protection

Sunnyvale, Calif. November 5, 2014 – Kinetic Technologies, a high-performance analog and mixed-signal semiconductor company focused on developing power management solutions for computing, consumer, industrial, and communications markets, today introduced the KTS1681 and KTS1682, surge protected load switches with over-voltage protection to protect battery operated systems from malfunctions due to high voltage surge pulses and charger faults.  The KTS1681 and KTS1682 are ideal for use in single cell Lithium-ion battery-based equipment, including mobile phones, Smartphones, Tablets, wearables and other portable devices.

The KTS1681 and KTS1682 are the latest generation of Power Interface products from Kinetic, significantly increasing safety and reliability in battery powered electronics.  The KTS1681 and KTS1682 are inserted between the power supply or charger source and the load to be protected. The over-voltage protection (OVP) switch features an ultra-low 38m (typical) on-resistance MOSFET and protects low-voltage systems against voltage faults up to +28VDC. An internal clamp also protects the device from input surge transients up to 100V. If the input voltage exceeds the overvoltage threshold, the internal MOSFET is turned off to prevent damage to any downstream components connected to the output of the device. A 15ms debounce time built into the device delays the internal MOSFET turn on time to avoid false turn on due to faulty connectors. The overvoltage protection threshold can be externally programmed with an optional resistor divider to set a threshold between 4V and 22V. With the OVLO input pin tied to GND (or below the external OVLO select voltage), the KTS1681 and KTS1682 automatically selects the internal OVLO threshold. The internal overvoltage threshold of the KTS1681 is preset to 5.95V typical for use with standard 5V adapter chargers or USB charging ports, while the KTS1682 is set to 9.98V typical for use in products that feature fast charging schemes or use a 2-cell battery.

“With the plethora of adapter chargers on the market today, all featuring a USB mini- or micro plug, mistakes can be made and incompatible chargers may be inadvertently used causing irreparable damage to the appliance,” said Phil Dewsbury, Senior Director of Product Marketing at Kinetic Technologies. “The KTS1681 and KTS1682 products, detect if the wrong voltage charger is used, breaking the connection in less than 100ns to any downstream components, protecting the more sensitive components. In addition, the KTS1681 and KTS1682 can also protect equipment from power line surges, removing the need to use large and bulky TVS diodes.”

The KTS1681 and KTS1682 also features a voltage detect function that provides the system with a few milliamps of current, regardless of the condition of the input voltage. This allows the system to restart in the event that the battery is completely discharged and cannot provide sufficient power to operate the system.

The devices support a voltage input range of 2.5V to +28V, include over-temperature protection, over-voltage protection, surge protection and automatic recovery when the fault conditions are removed. Each of the devices are available in a 12-pin WLCSP package. The devices are rated over the -40 degree C to +85 degree C temperature range.

Key Features of KTS1681/1682

  • Operation up to +28V input
  • Surge protection 100V to IEC61000 4-5
  • Enhanced ESD protection on VBUS compliant with IEC61000 4-2 (Level 4)
  • Fixed or adjustable Over-voltage protection
  • Ultra-low 38m resistance
  • VDET function
  • Small WLCSP12 package

About Kinetic Technologies

Kinetic Technologies designs, develops and markets proprietary high-performance analog and mixed-signal power management semiconductors for consumer, computing, industrial and communication markets. The company۪s product offering consists of integrated circuits that transform, regulate, deliver and monitor the power consumed by analog and digital semiconductors and other electronic loads. The company develops application-specific products to take care of the power management needs in devices such as mobile phones, smartphones, tablet computers, netbooks, GPS and MID, as well as serving a wide range of industrial, computing and communication product segments. Kinetic Technologies, a Cayman Corporation, has R&D centers in Silicon Valley and Asia, with operations and logistics based in Asia. For more information, please visit

*The Kinetic Technologies logo is a trademark of Kinetic Technologies. All other brand and product names appearing in this document are the property of their respective holders.