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Notebook Computer

 

Notebook personal computer products require a varied range of LED lighting solutions from LCD display LED backlight drivers to discrete LED and RGB LED indicator lamps.  Kinetic Technologies lighting and display products support application requirements from low cost compact to full size, full featured laptop computing devices.

 

 

+ LCD Backlight LED Drivers  

 

Notebook computer devices have large displays that consume significant levels of power. 

 

  • Display backlights use long series or series parallel LED strings that must be driven at voltage levels far greater than in internal battery power source can supply
  • LED drivers must boost the supply voltage to meet the required level for the given LED string and affect a constant current control to regulate backlight LED brightness.
  • Mixed-mode dimming is available to optimize the tradeoff of highest efficiency and LED color shift at low duty dimming.

 

Part NumberDescriptionPackagePackage Alt.Package Alt.1
KTD3156 6-Ch Step-Up LED Driver with PWM-Control Mixed-Mode Dimming TQFN33-16 WLCSP-16  
KTD3156B 6-Ch Step-Up LED Driver with PWM-Control Mixed-Mode Dimming, low duty dimming TQFN33-16 WLCSP-16  

+ RGB LED Drivers  

 

Notebook computer products use single and multicolor RGB LED function indicator lamps to inform power or battery status or to indicate the enable/disable state of other functions. 

 

  • RGB LED drivers allow for simplified programmable control of LED color and brightness in an ultra small footprint package.  
  • 3-channel RGB LED drivers permit custom color and brightness control
  • 4-channel RGBW devices allow for driving a white LED in addition to the RGB LED.  
  • Programming interface options include Express Wire or I2C to ease integration with a wide variety of processors and operating systems.

 

Part NumberDescriptionPackagePackage Alt.Package Alt.1
KTD2021 3-Channel RGB LED Driver with ExpressWire Control TSOT23-6    
KTD2022 3-Channel RGB LED Driver with ExpressWire Control UTDFN-8 1.5x1.5mm    
KTD2023 4-Channel RGBW LED Driver with ExpressWire Control UTDFN-8 1.5x1.5mm    
KTD2026 3-Channel RGB LED Driver with I2C Control UTDFN-8 1.5x1.5mm    
KTD2027 4-Channel RGBW LED Driver with I2C Control UTDFN-8 1.5x1.5mm    

+ System Power  

 

Notebook computers require increasing levels of features, performance, control and smaller board space. System Power ICs increase the control, performance by integrating multiple functions in a single IC which decreases the overall board area. 

 

  • ICs focused on specfic application areas including multi-channel DC/DC converters optimized for Hi-fi audio.
  • High efficiency power conversion.
  • Smallest board space with fewest external components for a solution.
  • Programming options provide maximum flexibility in software.

 

Part NumberDescriptionPackagePackage Alt.Package Alt.1
KTZ8812 +/- Dual Output DC/DC Converter WLCSP-15 2.2x1.45-15 TDFN 3x2.5-14  

+ EMI/ESD Protection  

 

EMC compliance for Ethernet connected devices often challenges the designer.  The physical interface of the PD data path to the outside environment is through the PHY.  The PHY is also subject to ESD and surge events when an Ethernet cable is inserted.  CM emissions are typically filtered by large passive devices located between the PHY and the LAN isolation magnetics.  Kinetic Technologies’ AS1602 is the world’s first active ESD and EMI suppressor IC.  It is a 4-channel device in which each channel connects to one wire of the two twisted pair sets.  ESD performance, EFT-B and surge immunity, and CM emissions equal or exceed passive techniques while occupying a much smaller footprint.

 

The AS1602 enables system designers to comply with:

 

  •  CISPR22 and FCC Part 15, Class B requirements for Radiated and Conducted Emissions.
  •  IEC 61000-4-3/6 requirements for Radiated and Conducted Immunity, Level 3 or higher.
  •  IEC 61000-4-2 ESD (Air Discharge) of ±25kV.
  •  IEC 61000-4-2 ESD (Contact Discharge) of ±12kV.
  •  Cable Discharge Event (CDE) of ±12kV.

 

Part NumberDescriptionPackagePackage Alt.Package Alt.1
AS1602 Dual-channel Active choke for EMI suppression w/ Integrated ESD Protection QSOP-16L (SOIC narrow)    

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