LP5521 Evaluation Kit


Order now


The LP5521 is a three channel LED driver designed to produce a variety of lighting effects for mobile devices. A high efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device has a program memory for creating variety of lighting sequences. When program memory has been loaded, the LP5521 can operate independently without processor control

The LP5521 Evaluation Kit is based on a computer controlled system, where the actual LP5521 devices are controlled and powered through the USB interface. Also, external power can be used if wanted. Two different sets of LEDs can be selected, either white LEDs or RGB LEDs. Four LP5521 Devices are assembled on one board to be able to evaluate the triggering/sequencing of multiple devices in one application.

  • Adaptive charge pump with 1x and 1.5x gain provides up to 95% LED drive efficiency
  • Charge pump with soft start and overcurrent/short circuit protection
  • Low input ripple and EMI
  • Very small solution size, no inductor or resistors required
  • 200 nA typical shutdown current
  • Automatic power save mode
  • I2C compatible interface
  • Independently programmable constant current outputs with 8-bit current setting and 8-bit PWM control
  • Typical LED output saturation voltage 50 mV and current matching 1%
  • Three program execution engines with flexible instruction set
  • Autonomous operation without external control
  • Large SRAM program memory
  • Two general purpose digital outputs
  • microSMD-20 package, 0.4 mm pitch
  • Bumped LLP-24 package, 0.5 mm pitch


  • Fun / indicator lights
  • LCD sub-display backlighting
  • Keypad RGB backlighting and phone cosmetics
  • Vibra, speakers, waveform generator
  • Input to the LI-LO configuration, can be post regulated when supply is regulated by Buck2
  • Up to 1000 mA output current by selection of external FET


RGB LED drivers
LP5521 3 channel RGB/White LED driver with internal program memory and integrated charge pump
Download View video with transcript Video

Order & start development

Evaluation board

LP5521TMEV — LP5521 Evaluation Kit

Log in to order
In stock / Out of stock
Not available on TI.com
TI's Standard Terms and Conditions for Evaluation Items apply.

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* User guide AN-1632 LP5521TM Evaluation Kit (Rev. E) 23 Sep 2016
Certificate LP5521TMEV EU Declaration of Conformity (DoC) 02 Jan 2019

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​