LP8556SQX-E00/NOPB

Voltage - Output:	16 V ~ 34.5 V
Base Part Number:	LP8556
Supplier Device Package:	24-WQFN (4x4)
Package / Case:	24-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-30°C ~ 85°C (TA)
Applications:	Backlight
Dimming:	PWM
Frequency:	312kHz, 625kHz, 1250kHz
Current - Output / Channel:	25mA
Series:	--
Voltage - Supply (Max):	20V
Voltage - Supply (Min):	2.7V
Number of Outputs:	5
Internal Switch(s):	Yes
Topology:	Step-Up (Boost)
Type:	DC DC Regulator
Part Status:	Active
Packaging:	Tape & Reel (TR)

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PMIC - LED Drivers: LP8556SQX-E00/NOPB application field and working principleThe LP8556SQX-E00/NOPB is a powerful, multi-channel LED driver that features an all-digital charge pump, allowing users to precisely control multiple LEDs from a single device. This device is optimal for applications such as general illumination, portable devices, automotive, industrial systems, and outdoor lighting. It is also highly integrated, making it ideal for space-constrained applications.The LP8556SQX-E00/NOPB enables users to power a single LED or multiple LEDs in parallel and/or in series with up to seven channels. It employs advanced charge-pump technology to efficiently and accurately supply each LED with a precision current, allowing for maximum LED light output. Its high efficiency and wide range of LED dimming capabilities makes it the perfect choice for applications that require the most sophisticated lighting control and flexibility.The LP8556SQX-E00/NOPB integrates an adjustable, low-dropout (LDO) voltage regulator that supplies the LEDs with the voltage necessary for their operation. It also features a low-battery indicator that detects when the voltage drops below the operating threshold and holds the LED current at a minimum.The cycle-by-cycle current limit feature of the LP8556SQX-E00/NOPB prevents the device from exceeding the maximum current output and eliminates the need for complex over-current protection circuitry. The device also features a digital soft-start that avoids inrush currents during startup and secures effective current limit during continuous operation.The LP8556SQX-E00/NOPB is an extremely configurable device that allows users to adjust the LED current levels, the soft-start delay, the minimum on-time and even the phase delay between the channels. With up to seven channels, users can conveniently control each LED individually to create effects such as slow fade-in/fade-out and smooth LED transitions.The LP8556SQX-E00/NOPB integrates a comprehensive set of fault detection mechanisms, as well as a comprehensive set of protection features, to help protect the LEDs from excessive current or voltages. The device is offered in a 1.2mm x 1.5mm, 8-bump DSBGA package and is rated for single-phase operation from a typical 2.5V to 5.5V supply.In summary, the LP8556SQX-E00/NOPB is a high-performance LED driver for applications such as general illumination, portable devices, automotive, industrial systems, and outdoor lighting. It is highly integrated, making it ideal for space-constrained applications and features advanced charge-pump technology, digital soft start and cycle-by-cycle current limit. Additionally, it is configurable and offers comprehensive fault detection and protection.

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