Product details

Number of channels (#) 3 LED current per channel (mA) 25.5 LED configuration Parallel Program memory Yes Programmable ramp control Yes Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Iout (Max) (A) 0.0765 Features Analog/PWM mixed dimming, Constant current, Current control, I2C control, Power-save mode, Programmable lighting engines Iq (Typ) (mA) 1.5 Shutdown current (Typ) (uA) 0.2 Operating temperature range (C) -30 to 85 Rating Catalog
Number of channels (#) 3 LED current per channel (mA) 25.5 LED configuration Parallel Program memory Yes Programmable ramp control Yes Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Iout (Max) (A) 0.0765 Features Analog/PWM mixed dimming, Constant current, Current control, I2C control, Power-save mode, Programmable lighting engines Iq (Typ) (mA) 1.5 Shutdown current (Typ) (uA) 0.2 Operating temperature range (C) -30 to 85 Rating Catalog
DSBGA (YFQ) 20 0 mm² 2.103 x 1.743 WQFN (NJA) 24 20 mm² 5 x 4
  • Adaptive Charge Pump With 1× and 1.5× 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
  • Adaptive Charge Pump With 1× and 1.5× 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

The LP5521 is a three-channel LED driver designed to produce 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, LP5521 can operate autonomously without processor control allowing power savings.

The device maintains excellent efficiency over a wide operating range by automatically selecting proper charge pump gain based on LED forward voltage requirements and is able to automatically enter power-save mode, when LED outputs are not active and thus lowering current consumption.

Three independent LED channels have accurate programmable current sources and PWM control. Each channel has program memory for creating desired lighting sequences with PWM control.

The LP5521 has a flexible digital interface. Trigger I/O and a 32-kHz clock input allow synchronization between multiple devices. Interrupt output can be used to notify processor, when LED sequence has ended. The LP5521 has four pin selectable I2C-compatible addresses. This allows connecting up to four parallel devices in one I2C-compatible bus. GPO and INT pins can be used as a digital control pin for other devices.

The LP5521 requires only four small, low-cost ceramic capacitors.

Comprehensive application tools are available, including command compiler for easy LED sequence programming.

For all available packages, see the orderable addendum at the end of the data sheet.

The LP5521 is a three-channel LED driver designed to produce 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, LP5521 can operate autonomously without processor control allowing power savings.

The device maintains excellent efficiency over a wide operating range by automatically selecting proper charge pump gain based on LED forward voltage requirements and is able to automatically enter power-save mode, when LED outputs are not active and thus lowering current consumption.

Three independent LED channels have accurate programmable current sources and PWM control. Each channel has program memory for creating desired lighting sequences with PWM control.

The LP5521 has a flexible digital interface. Trigger I/O and a 32-kHz clock input allow synchronization between multiple devices. Interrupt output can be used to notify processor, when LED sequence has ended. The LP5521 has four pin selectable I2C-compatible addresses. This allows connecting up to four parallel devices in one I2C-compatible bus. GPO and INT pins can be used as a digital control pin for other devices.

The LP5521 requires only four small, low-cost ceramic capacitors.

Comprehensive application tools are available, including command compiler for easy LED sequence programming.

For all available packages, see the orderable addendum at the end of the data sheet.

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Technical documentation

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Type Title Date
* Data sheet LP5521 Three-Channel RGB, White-LED Driver With Internal Program Memory and Integrated Charge Pump datasheet (Rev. I) 04 Nov 2016
White paper Common LED Functions and LED Driver Design Considerations 21 Sep 2020
Application note How to Select a RGB LED Driver 08 Aug 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Technical article Here's how body electronics and lighting technology are changing the driving experience 26 Sep 2016
User guide AN-1632 LP5521TM Evaluation Kit (Rev. E) 23 Sep 2016
Technical article LED brightness adjustment: high-frequency PWM dimming 26 Aug 2016
Technical article Take better selfies with innovative LED flashes 18 Nov 2014
Technical article Solving the automotive EMI issues in new cars with all the screens 11 Sep 2014
Application note AN-1523 LP5521 Power Efficiency Considerations (Rev. C) 30 Apr 2013
Application note AN-1562 LP5521 Programming Considerations (Rev. A) 30 Apr 2013
Application note Color-Management LED Drivers Have a Bright Future 20 Jun 2007

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LP5521TMEV — LP5521 Evaluation Kit

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 (...)

Not available on TI.com
Evaluation board

LP5523EVM — LP5523 Programmable 9-Output LED Driver Evaluation Module

The LP5523 is a fully integrated lighting management unit for producing lighting effects for mobile devices. The LP5523 includes all necessary power management, high-side current sources, temperature compensation, two wire (I2C compatible) control interface and programmable pattern generators. The (...)

Not available on TI.com
Driver or library

LP5521SW-LINUX — Linux Driver for LP5521

The Linux driver supports the LP5521 Three Channel LED Driver. The Linux driver supports communication through the I2C bus and interfaces with the LED sub-system.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • lp5521

 

Linux Source Files

The (...)

GUI for evaluation module (EVM)

LP5521EVM GUI

SLAC731.ZIP (6117 KB)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Package Pins Download
DSBGA (YFQ) 20 View options
WQFN (NJA) 24 View options

Ordering & quality

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