LP5521YQX/NOPB

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Texas Instruments

3 CHANNEL RGB/WHITE LED DRIVER WITH INTERNAL PROGRAM MEMORY AND INTEGRATED CHARGE PUMP

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LP5521YQX/NOPB

Active

Texas Instruments

3 CHANNEL RGB/WHITE LED DRIVER WITH INTERNAL PROGRAM MEMORY AND INTEGRATED CHARGE PUMP

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Description Specifications Series Pricing CAD Documents

Description

General part information

LP5521 Series

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.

Technical Specifications

Parameters and characteristics for this part

Specification	LP5521YQX/NOPB

Applications	Backlight
Current - Output / Channel	25.5 mA
Dimming	I2C
Frequency	1.25 MHz
Internal Switch(s)	Yes
Mounting Type	Surface Mount
Number of Outputs	3
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-30 °C
Package / Case	24-VFQFN Exposed Pad
Package Length	5 mm
Package Name	24-WQFN
Package Width	4 mm
Topology	Switched Capacitor (Charge Pump)
Type	DC DC Regulator
Voltage - Output	4.55 V
Voltage - Supply (Max)	5.5 V
Voltage - Supply (Min)	2.7 V

LP5521 Series

Part	Total Output Count	Output Type	Non-Isolated Output Count	Contents	Utilized IC / Part	Features	Voltage - Input (Maximum)	Voltage - Input (Minimum)	Package Name	Package Width	Package Length	Voltage - Output	Applications	Topology	Mounting Type	Frequency	Voltage - Supply (Max)	Voltage - Supply (Min)	Current - Output / Channel	Internal Switch(s)	Dimming	Number of Outputs	Package / Case	Operating Temperature (Max)	Operating Temperature (Min)	Type
Texas Instruments LP5521TMEV	3	Non-Isolated	3	Board Cable	LP5521	Dimmable	5.5 V	2.8 V
Texas Instruments LP5521YQX/NOPB									24-WQFN	4 mm	5 mm	4.55 V	Backlight	Switched Capacitor (Charge Pump)	Surface Mount	1.25 MHz	5.5 V	2.7 V	25.5 mA	Yes	I2C	3	24-VFQFN Exposed Pad	85 °C	-30 °C	DC DC Regulator
Texas Instruments LP5521TMX/NOPB									20-TuSMD			4.55 V	Backlight	Switched Capacitor (Charge Pump)	Surface Mount	1.25 MHz	5.5 V	2.7 V	25.5 mA	Yes	I2C	3	20-WFBGA	85 °C	-30 °C	DC DC Regulator
Texas Instruments LP5521YQ/NOPB									24-WQFN	4 mm	5 mm	4.55 V	Backlight	Switched Capacitor (Charge Pump)	Surface Mount	1.25 MHz	5.5 V	2.7 V	25.5 mA	Yes	I2C	3	24-VFQFN Exposed Pad	85 °C	-30 °C	DC DC Regulator
Texas Instruments LP5521TM/NOPB									20-TuSMD			4.55 V	Backlight	Switched Capacitor (Charge Pump)	Surface Mount	1.25 MHz	5.5 V	2.7 V	25.5 mA	Yes	I2C	3	20-WFBGA	85 °C	-30 °C	DC DC Regulator