Specification	LP8556TMX-E05/NOPB

Applications	Backlight
Current - Output / Channel	50 mA
Frequency	1.25 MHz, 312 kHz, 625 kHz
Internal Switch(s)	True
Mounting Type	Surface Mount
Number of Outputs	6
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-30 °C
Package / Case	DSBGA, 20-WFBGA
Supplier Device Package	20-DSBGA
Supplier Device Package [x]	2.04
Supplier Device Package [y]	1.78
Topology	Step-Up (Boost)
Type	DC DC Regulator
Voltage - Output [Max]	43 V
Voltage - Output [Min]	7 V
Voltage - Supply (Max) [Max]	20 V

LP8556 Series

6 channel high-efficiency/Efficacy LED backlight driver

Part	Type	Dimming	Voltage - Output [Min]	Voltage - Output [Max]	Voltage - Supply (Max) [Max]	Topology	Supplier Device Package	Supplier Device Package [y]	Supplier Device Package [x]	Number of Outputs	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case	Current - Output / Channel	Mounting Type	Frequency	Applications
Texas Instruments LP8556TMX-E11/NOPB	DC DC Regulator	I2C PWM	7 V	43 V	20 V	Step-Up (Boost)	20-DSBGA	1.78	2.04	6	-30 °C	85 °C	20-WFBGA DSBGA	50 mA	Surface Mount	1.25 MHz 312 kHz 625 kHz	Backlight
Texas Instruments LP8556TME-E06/NOPB	DC DC Regulator	PWM	7 V	43 V	20 V	Step-Up (Boost)	20-DSBGA	1.78	2.04	5	-30 °C	85 °C	20-WFBGA DSBGA	50 mA	Surface Mount	1.25 MHz 312 kHz 625 kHz	Backlight
Texas Instruments LP8556SQX-E09/NOPB	DC DC Regulator	PWM	7 V	43 V	20 V	Step-Up (Boost)	24-WQFN (4x4)			6	-30 °C	85 °C	24-WFQFN Exposed Pad	50 mA	Surface Mount	1.25 MHz 312 kHz 625 kHz	Backlight
Texas Instruments LP8556TME-E09/NOPB	DC DC Regulator	PWM	7 V	43 V	20 V	Step-Up (Boost)	20-DSBGA	1.78	2.04	6	-30 °C	85 °C	20-WFBGA DSBGA	50 mA	Surface Mount	1.25 MHz 312 kHz 625 kHz	Backlight
Texas Instruments LP8556SQE-E09/NOPB	DC DC Regulator	PWM	7 V	43 V	20 V	Step-Up (Boost)	24-WQFN (4x4)			6	-30 °C	85 °C	24-WFQFN Exposed Pad	50 mA	Surface Mount	1.25 MHz 312 kHz 625 kHz	Backlight
Texas Instruments LP8556SQ-E09/NOPB	DC DC Regulator	PWM	7 V	43 V	20 V	Step-Up (Boost)	24-WQFN (4x4)			6	-30 °C	85 °C	24-WFQFN Exposed Pad	50 mA	Surface Mount	1.25 MHz 312 kHz 625 kHz	Backlight
Texas Instruments LP8556TMX-E05/NOPB	DC DC Regulator		7 V	43 V	20 V	Step-Up (Boost)	20-DSBGA	1.78	2.04	6	-30 °C	85 °C	20-WFBGA DSBGA	50 mA	Surface Mount	1.25 MHz 312 kHz 625 kHz	Backlight
Texas Instruments LP8556TMX-E06/NOPB	DC DC Regulator	PWM	7 V	43 V	20 V	Step-Up (Boost)	20-DSBGA	1.78	2.04	5	-30 °C	85 °C	20-WFBGA DSBGA	50 mA	Surface Mount	1.25 MHz 312 kHz 625 kHz	Backlight
Texas Instruments LP8556SQ-E00/NOPB	DC DC Regulator	PWM	7 V	43 V	20 V	Step-Up (Boost)	24-WQFN (4x4)			5	-30 °C	85 °C	24-WFQFN Exposed Pad	50 mA	Surface Mount	1.25 MHz 312 kHz 625 kHz	Backlight
Texas Instruments LP8556SQ-E08/NOPB	DC DC Regulator	PWM	7 V	43 V	20 V	Step-Up (Boost)	24-WQFN (4x4)			4	-30 °C	85 °C	24-WFQFN Exposed Pad	50 mA	Surface Mount	1.25 MHz 312 kHz 625 kHz	Backlight

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	3000	$ 0.71
		6000	$ 0.68
		15000	$ 0.65
Texas Instruments	LARGE T&R	1	$ 1.16
		100	$ 0.96
		250	$ 0.69
		1000	$ 0.52

Description

General part information

LP8556 Series

The LP8556 device is a white-LED driver featuring an asynchronous boost converter and six high precision current sinks that can be controlled by a PWM signal or an I2C master.

The boost converter uses adaptive output voltage control for setting the optimal LED driver voltages as low as 7 V and as high as 43 V. This feature minimizes the power consumption by adjusting the output voltage to the lowest sufficient level under all conditions. The converter can operate at three switching frequencies: 312 kHz, 625 kHz, and 1250 kHz, which can be set with an external resistor or pre-configured via EPROM. Programmable slew rate control and spread spectrum scheme minimize switching noise and improve EMI performance.

LED current sinks can be set with the PWM dimming resolution of up to 15 bits. Proprietary adaptive dimming mode allows higher system power saving. In addition, phase shifted LED PWM dimming allows reduced audible noise and smaller boost output capacitors.

Documents

Technical documentation and resources

LP8556TMX-E05/NOPB

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LP8556TMX-E05/NOPB

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Technical Specifications

LP8556 Series

Pricing

Description

LP8556 Series

Documents

Inductor Selection in Boost Converters for LCD Backlight Applications

LP8556SQ-EVM User's Guide

Power Budget for Backlight Drivers

Power Management Guide 2018 (Rev. R)

Schottky Diode Selection in Asynchronous Boost Converters

Increasing Full-Load Efficiency of a Backlight Driver

LP8556 High-Efficiency LED Backlight Driver For Tablets datasheet (Rev. M)

AN-1112 DSBGA Wafer Level Chip Scale Package (Rev. AI)

Common LED Functions and LED Driver Design Considerations

LP8556TM-EVM User Guide

Some Guidelines and Tips for the LED Driver Application

LP8556 Series