Smartphone platforms are evolving at an extreme pace; adding new features, new functions and larger displays with higher definition. This is placing a significant burden on the battery power source, where technology development moves at a much slower pace resulting in a continual demand for more efficient and cost-effective ways to use the limited available power. At Kinetic, we pride ourselves in meeting those demands with highly efficient, compact power management solutions, offering cost effective solutions for display power, camera flash, power conversion, over-voltage protection and load switching applications.


Buck and Boost Converters

Smartphones typically use highly integrated power management ICs (PMIC) to supply the multitude of internal system power rails. However, in cases where a specific voltage rail is unavailable, or the device to be powered is far from the PMIC, a voltage regulator can be added to provide the necessary supply.

  • Point of load voltage regulators provide a local supply rail with high efficiency
  • Single output high efficiency DC/DC switching regulators can provide either a step-up or step-down voltage output
Part Number Description
KTD2021 3-Channel RGB LED Driver with ExpressWire Control
KTD2022 3-Channel RGB LED Driver with ExpressWire Control
KTD2023 4-Channel RGBW LED Driver with ExpressWire Control
KTD2026 3-Channel RGB LED Driver with I2C Control
KTD2027 4-Channel RGBW LED Driver with I2C Control
KTD2037 3-Channel RGB LED Driver with I2C Control, AutoBlinQ™
KTZ8812 +/- Dual Output DC/DC Converter

Camera LED Flash Drivers

Smartphone LED camera flash requirements are mainly determined by camera resolution, quality and functionality.

  • Low cost / low resolution cameras may only require a single flash LED with a simple driver
  • High-resolution smartphone cameras require multiple high brightness flash LEDs that support video and torch modes

Product Highlights:

  • Single low current, low noise linear or boost flash LED drivers
  • Multi-channel high efficiency flash LED drivers that can support independent programmable LED torch and flash modes, with drive currents up to 1.5A per channel
Part Number Description
KTD231 Linear-mode 700mA Flash LED Driver
KTD233 Inductorless 1.4A Flash LED Driver in 2x3mm Package
KTD265 2MHz, 1A Flash LED Driver
KTD267 2MHz, 1.5A Flash LED Driver
KTD2682 2MHz, 2-Ch 1.5A+0.75A Flash LED Driver
KTD2683B 2MHz, 3-Ch 1.5A+0.75A+0.3A Flash LED Driver
KTD2684 2MHz, 2-Ch 1.5A+1.0A Flash LED Driver
KTD2686 2MHz, 3-Ch 1.5A+1.0A+0.5A Flash LED Driver
KTD2688 2MHz, 2-Ch 1.5A+1.5A Flash LED Driver
KTD2688A 2MHz, 2-Ch 1.5A+1.5A Flash LED Driver
KTD2692 2MHz, 1.5A Flash LED Driver
KTD2694 2MHz, 1.5A Flash LED Driver

GPIO

Kinetic Technologies’ general-purpose input/output (GPIO) technology is low voltage and offers general purpose expanders designed for microcontrollers when additional I/Os are needed, ensuring additional interconnections are kept to a minimum.

As an input, the expander programs the polarity, latch, pull-up, pull-down and interrupt functions. For a system with noisy input, our GPIO technology also provides a seamless debounce function with programmable debounce time. Working as an output, this technology can program output stage with bank/pin selectable push-pull or open-drain options, and can also program four drive strengths of the output stage to optimize rise/fall times.

GPIO technology is the perfect fit for a broad range of smartphones.

Part Number Description
KTS1620 Low Voltage 24-Bit I2C-bus I/O Expander

LCD Bias Supplies

Smartphone LCD display backlights require multiple white LEDs that consume a significant portion of the device battery power. LEDs are normally connected in series and therefore require a compliance voltage significantly higher than the battery voltage.

  • Panel size and resolution determine the number of white LEDs (WLED) required to produce the necessary screen brightness
  • Dimming techniques to control the brightness can range from simple linear LED brightness control to sophisticated high efficiency PWM control to achieve contrast ratios of typically 20,000:1
  • High efficiency boost power conversion required to minimize demands on battery power consumption and maximize the battery life between charge cycles

Product Highlights:

  • Single or multiple channel LED drivers to match the display panel needs
  • Multiple programming options from simple PWM signal control to full-featured I2C interfaces.
  • Advanced design, low drop-out current sinks with tight linearity characteristics to maintain constant LED current accuracy over all battery voltage extremes
  • High efficiency boost converters with integrated protection against LED open and short-circuit conditions
Part Number Description
KTD2150 2-Channel LCD Panel Bias Supply with Single Inductor
KTD2151 2-Channel LCD Panel Bias Supply with Single Inductor
KTD2151B 2-Channel LCD Panel Bias Supply with Single Inductor
KTD2159 2-Channel LCD Panel Bias Supply with Single Inductor
KTZ8850 1-Channel LED Driver plus 2-Channel LCD Panel Bias

Over-Voltage and Surge Protection

Battery powered portable platforms require switches to protect external input power ports used for operation and battery charging and to control internal load circuits.

Input power port protection is a paramount concern in mobile phone and smartphone design, as reliable power sources may not always be used. The level of protection is dependent upon phone model and local country requirements

  • Over-voltage, and surge protected load switches protect battery charge management and operating handset circuits, by breaking the connection between the power source and the internal circuitry, in the event the device is connected to a faulty power source or subjected to an abnormal stress condition.

Product Highlights:

  • Programmable and fixed over-voltage protection (OVP) shutdown thresholds.
  • Input protection
    • Wrong adapter up to +40V
    • Reverse voltage down to -6V
    • Transient voltage protection up to 200V, compliant to IEC61000-4-2 (Level 4)
    • ESD protection compliant to ±8kV contact, ±15kV air gap and ±2kV human body model.
  • Single or dual devices with Uni or Bi-directional blocking

Integrated load switches provide internal power switching and are controlled by simple GPIO logic.

  • Eliminate the need for bias and level shift circuits associated with discrete MOSFET switches
  • Provides slew-rate limited turn-on with reverse current blocking and output discharge mode to de-select functions when not required to extend battery life.

Product Highlights:

  • Extremely low IN to OUT resistance
  • Tiny footprint
  • Operation down to 1.8V
Part Number Description
KTS1601 SRC P-Ch Load Switch with Reverse Blocking
KTS1601-1 SRC P-Ch Load Switch with Reverse Blocking and Output Discharge
KTS1605 SRC P-Ch Load Switch with Reverse Blocking
KTS1605-1 SRC P-Ch Load Switch with Reverse Blocking and Output Discharge
KTS1612 Dual-Input Push Button Reset IC with Two Discharge Paths
KTS1662 Load Switch with fixed and adjustable OVP

RGB LED Drivers

Multicolor RGB LEDs are often incorporated into mobile and smartphone handsets as function indicator lamps or for fashion lighting.

  • RGB LED drivers allow simplified programmable control of LED color and brightness

Product Highlights:

  • 3-channel RGB LED drivers permit custom color control
  • 4-channel RGBW devices allow for driving a white LED in addition to the RGB LED
  • Multiple programming options include I2C or ExpressWire to ease integration with a wide variety of processors and operating systems
  • Wide range of ramp up/down timing for slow fade in/out effects and complex repeating patterns
  • Ultra-small package footprint
Part Number Description
KTB851 600mA Step-down Converter with Output Load Discharge
KTB851-1 600mA Step-down Converter
KTC218 Wide Output Range Step-Up Converter
KTZ8812 Dual Output DC/DC Converter

USB Data Line Protection ICs

Part Number Description
KTU1000 USB Hi-Speed Switch with Fault Protection
KTU1001 USB D+/D- Hi-Speed or SBU1/2 Switch with Fault Protection
KTU1001A USB D+/D- Hi-Speed or SBU1/2 Switch with Fault Protection
KTU1101 USB Type-C Port Protector for CC and SBU Pins