Texas Instruments LP5521 Product Info

Parameters

Number of channels	3
LED current per channel (mA)	25.5
LED configuration	Parallel
Program memory	Yes
Topology	Charge pump
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 (ISD) (typ) (µA)	0.2
Operating temperature range (°C)	-30 to 85
Rating	Catalog

Package

DSBGA (YFQ)-20-3.96 mm² 2.2 x 1.8

Features

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

Description

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.

ELECTRONIC COMPONENTS
All In One Distributor

LP5521

3 channel RGB/White LED driver with internal program memory and integrated charge pump Linux Mainline Status Linux Source Files

Texas Instruments LP5521 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS All In One Distributor

LP5521

3 channel RGB/White LED driver with internal program memory and integrated charge pump Linux Mainline Status Linux Source Files

Texas Instruments LP5521 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS
All In One Distributor