LP8552TLX-E04/NOPB

Voltage - Output:	40V
Base Part Number:	LP8552
Supplier Device Package:	25-DSBGA (2.46x2.46)
Package / Case:	25-WFBGA, DSBGA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Applications:	Backlight
Dimming:	PWM
Frequency:	--
Current - Output / Channel:	450mA
Series:	--
Voltage - Supply (Max):	22V
Voltage - Supply (Min):	2.7V
Number of Outputs:	6
Internal Switch(s):	Yes
Topology:	Step-Up (Boost)
Type:	DC DC Regulator
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The LP8552TLX-E04/NOPB is a high-efficiency, programmable LED driver from Texas Instruments. The device is a part of the LP8550/LP8553 families of LED drivers,which consist of the complete solution for lighting applications. It is an ideal power management device for applications such as automotive LCD backlighting and general purpose lighting.

Application Field

The LP8552TLX-E04/NOPB is a highly efficient, programmable LED driver with a wide variety of features and capabilities. It is a suitable power management device designed for automotive LCD backlighting, general purpose lighting and various other applications. The device is capable of providing a wide range of dimming options and is equipped with a wide input voltage range, making it ideal for applications requiring different voltage levels. For example, it can be easily used in applications with low voltage levels, such as AC and DC power supplies, or high voltage levels, such as battery power supplies.The device also features several safety features such as over-temperature protection, over-current protection and under-voltage lockout, which make it suitable for use in safety-critical applications. Additionally, it has a built-in thermal foldback feature which protect against sudden temperature fluctuations.

Working Principle

The LP8552TLX-E04/NOPB is a dual output LED driver, capable of providing up to 6A of current each channel. It has programmable LED current sinks, which can be setup to generate a constant LED current for outdoor lighting applications. Additionally, it has a programmable LED pulse-width modulation (PWM) generator with adjustable block times, allowing for dimming and also provides an adjustable output voltage range of 0.1V – 6V.The device features a central processing unit (CPU) with an integrated 16-bit digital signal processor (DSP), which allows it to run complex algorithms and dimming functions. It also has an Interface bus which can allow communication with external devices. Another key feature of the LP8552TLX-E04/NOPB is its +/- 0.3% LED current accuracy, Which allows for accurate LED current control, thus eliminating the need for a manual potentiometer in the system.In conclusion, the LP8552TLX-E04/NOPB is an efficient, programmable LED driver with a wide input voltage range, capable of providing a wide range of dimming options. With its safety features and programmable LED current sinks and PWM generator, the device is an ideal power management solution for automotive LCD backlighting and general purpose lighting applications.

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