LP8556TME-E11/NOPB

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Texas Instruments

LED LIGHTING DRIVER ICS 6 CHANNEL HIGH-EFFIC IENCY/EFFICACY LED B A 595-LP8556TMXE11NOPB

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LP8556TME-E11/NOPB

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Texas Instruments

LED LIGHTING DRIVER ICS 6 CHANNEL HIGH-EFFIC IENCY/EFFICACY LED B A 595-LP8556TMXE11NOPB

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Description Specifications Series Pricing CAD Documents

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.

Technical Specifications

Parameters and characteristics for this part

Specification	LP8556TME-E11/NOPB

Applications	Backlight
Current - Output / Channel	50 mA
Dimming	PWM
Frequency	1250kHz, 312kHz, 625kHz
Frequency	1.25 MHz, 312 kHz, 625 kHz
Internal Switch(s)	Yes
Mounting Type	Surface Mount
Number of Outputs	3
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-30 °C
Package / Case	DSBGA, 20-WFBGA
Package Length	2.04 mm
Package Name	20-DSBGA
Package Width	1.78 mm
Topology	Step-Up (Boost)
Type	DC DC Regulator
Voltage - Output (Max)	43 V
Voltage - Output (Min)	7 V
Voltage - Supply (Max)	20 V
Voltage - Supply (Min)	2.7 V

LP8556 Series

6 channel high-efficiency/Efficacy LED backlight driver

Part	Package Name	Package Width	Package Length	Topology	Voltage - Supply (Min)	Package / Case	Operating Temperature (Max)	Operating Temperature (Min)	Type	Number of Outputs	Frequency	Frequency	Voltage - Output (Min)	Voltage - Output (Max)	Internal Switch(s)	Applications	Voltage - Supply (Max)	Mounting Type	Current - Output / Channel	Dimming
Texas Instruments LP8556TME-E11/NOPB	20-DSBGA	1.78 mm	2.04 mm	Step-Up (Boost)	2.7 V	20-WFBGA DSBGA	85 °C	-30 °C	DC DC Regulator	3	1250kHz 312kHz 625kHz	1.25 MHz 312 kHz 625 kHz	7 V	43 V	Yes	Backlight	20 V	Surface Mount	50 mA	PWM
Texas Instruments LP8556TMX-E11/NOPB	20-DSBGA	1.78 mm	2.04 mm	Step-Up (Boost)	2.7 V	20-WFBGA DSBGA	85 °C	-30 °C	DC DC Regulator	6	1250kHz 312kHz 625kHz	1.25 MHz 312 kHz 625 kHz	7 V	43 V	Yes	Backlight	20 V	Surface Mount	50 mA	I2C PWM
Texas Instruments LP8556TME-E06/NOPB	20-DSBGA	1.78 mm	2.04 mm	Step-Up (Boost)	2.7 V	20-WFBGA DSBGA	85 °C	-30 °C	DC DC Regulator	5	1250kHz 312kHz 625kHz	1.25 MHz 312 kHz 625 kHz	7 V	43 V	Yes	Backlight	20 V	Surface Mount	50 mA	PWM
Texas Instruments LP8556SQX-E09/NOPB	24-WQFN	4 mm	4 mm	Step-Up (Boost)	2.7 V	24-WFQFN Exposed Pad	85 °C	-30 °C	DC DC Regulator	6	1250kHz 312kHz 625kHz	1.25 MHz 312 kHz 625 kHz	7 V	43 V	Yes	Backlight	20 V	Surface Mount	50 mA	PWM
Texas Instruments LP8556TME-E09/NOPB	20-DSBGA	1.78 mm	2.04 mm	Step-Up (Boost)	2.7 V	20-WFBGA DSBGA	85 °C	-30 °C	DC DC Regulator	6	1250kHz 312kHz 625kHz	1.25 MHz 312 kHz 625 kHz	7 V	43 V	Yes	Backlight	20 V	Surface Mount	50 mA	PWM
Texas Instruments LP8556SQE-E09/NOPB	24-WQFN	4 mm	4 mm	Step-Up (Boost)	2.7 V	24-WFQFN Exposed Pad	85 °C	-30 °C	DC DC Regulator	6	1250kHz 312kHz 625kHz	1.25 MHz 312 kHz 625 kHz	7 V	43 V	Yes	Backlight	20 V	Surface Mount	50 mA	PWM
Texas Instruments LP8556SQ-E09/NOPB	24-WQFN	4 mm	4 mm	Step-Up (Boost)	2.7 V	24-WFQFN Exposed Pad	85 °C	-30 °C	DC DC Regulator	6	1250kHz 312kHz 625kHz	1.25 MHz 312 kHz 625 kHz	7 V	43 V	Yes	Backlight	20 V	Surface Mount	50 mA	PWM
Texas Instruments LP8556SQE-E08/NOPB	24-WQFN	4 mm	4 mm	Step-Up (Boost)	2.7 V	24-WFQFN Exposed Pad	85 °C	-30 °C	DC DC Regulator	4	1250kHz 312kHz 625kHz	1.25 MHz 312 kHz 625 kHz	7 V	43 V	Yes	Backlight	20 V	Surface Mount	50 mA	PWM
Texas Instruments LP8556TMX-E05/NOPB	20-DSBGA	1.78 mm	2.04 mm	Step-Up (Boost)	2.7 V	20-WFBGA DSBGA	85 °C	-30 °C	DC DC Regulator	6	1250kHz 312kHz 625kHz	1.25 MHz 312 kHz 625 kHz	7 V	43 V	Yes	Backlight	20 V	Surface Mount	50 mA
Texas Instruments LP8556TME-E04/NOPB	20-DSBGA	1.78 mm	2.04 mm	Step-Up (Boost)	2.7 V	20-WFBGA DSBGA	85 °C	-30 °C	DC DC Regulator	6	1250kHz 312kHz 625kHz	1.25 MHz 312 kHz 625 kHz	7 V	43 V	Yes	Backlight	20 V	Surface Mount	50 mA	PWM