LT3688EFE#TRPBF

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LT3688EFE#TRPBF is an integrated inductive boost converter PMIC (Power Management IC) used for LED constant current driver. It is part of Analog Devices’ voltage regulation and DC – DC switching regulator product line.

This PMIC provides efficient solutions for LED constant current driver application in various power systems, from tiny mobile devices to high power industrial systems. Its integrated features simplifies the design cycle, lower component count and decrease external component cost for LED driving.

The LT3688EFE#TRPBF includes integrated FETs, a high voltage integrated circuit, a control circuit and a power feedback network, which greatly simplifies the design complexity of LED constant current LED driver. This IC also contains an integrated inductor and current sense amplifier which are perfectly matched. Power up/down timing, high-side and low-side output overvoltage, pulse-by-pulse current limit, thermal overload protection, undervoltage lockout and overcurrent protection are all integrated in the IC.

The operating principle of LT3688EFE#TRPBF is based on the pulse width modulation (PWM) control. A PWM signal is generated using the built-in high and low voltage input voltage sensing circuits and an internal comparator. The PWM signal is then passed through an output network, which regulates the output current. The output current is maintained close to the set point as determined by the internal compare circuit. This PMIC also features integrated logic signals for output overcurrent protection and under-voltage lockout. In case of overcurrent or under-voltage, the integrated logic signal activates to shut-off the switch.

LT3688EFE#TRPBF application fields are wide-spread, such as in LED backlighting, computer monitor, and industrial lighting.

In LED backlighting applications, LT3688EFE#TRPBF is used to provide a stable and consistent light across a wide range of LED voltage. Compared to other current sources, linear regulators, and LED drivers, LT3688EFE#TRPBF has a wide dimming range. This controller is suitable for both single-LED and string-type of LED backlighting. It requires minimal external component count, thus cost effective and smaller design form factor than other LED controllers.

The LT3688EFE#TRPBF can handle up to 5A output with dimming range of up to 1000:1, ultra low quiescent current, and ripple current. Its PWM outputs can supply from 1A to 3A of current with a peak current up to 5A, ensuring a smooth and consistent light output. Additional features include adjustable switching frequency, built-in soft starting, external synchronization, and cycle-by-cycle current limiting.

In computer monitor applications, LT3688EFE#TRPBF is used to drive various liquid crystal display (LCD) backlights and provide optimal video picture quality. With its built-in current sense amplifier and PWM-controlled output stages, LT3688EFE#TRPBF provides fast response to the input signal and eliminates universal dimming controls, which reduces components cost. Additional features allow adjustment of output voltage, a maximum output current setting, as well as cycle-by-cycle current limit.

LT3688EFE#TRPBF is also used in industrial lighting applications, such as roadway lighting, high bay lighting, and street lighting. This IC provides a reliable solution to constant current LED driving. Its wide dimming range ensures an efficient, uniform lighting, and its in-built undervoltage lockout protects against input voltage drops. The PWM outputs provide up to 5A current with adjustable frequency, as well as programmable starting current for smooth ramping. Additionally, the Cycle-by-Cycle current limiting offers overload and short-circuit protection.

LT3688EFE#TRPBF is a reliable, cost-effective and flexible PMIC for a wide variety of LED current driver applications. Its integrated features help simplify the design cycle, while its built-in protection functions guarantee system stability and safety in different power systems.

The specific data is subject to PDF, and the above content is for reference