LT3599IUH#PBF

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LT3599IUH#PBF is a current-mode PWM controller with an optimized Efficiency, Programmable Frequency and Flexible Dimming features from Linear Technology. It is an integrated high-speed protection and control device for white LED applications with adjustable load current. It’s a monolithic fully integrated IC that incorporates the functions of linear regulators, high-speed current limit protection, open-circuit protection and a thermal-shutdown protection circuit. The LT3599IUH#PBF is well suited for LED products that require programmable frequency, flexible dimming and improved power efficiency. It’s one of the few devices which includes a complete power system solution tailored for automotive, industrial and consumer LED lighting applications.

The LT3599IUH#PBF is classified as a PMIC - LED Driver. It is a current regulated LED driver that is able to drive high-power LED strings without the need for external linear regulators or current sense circuitry. The LT3599IUH#PBF provides highly efficient operation over a wide input voltage range and is able to operate from a single Li-Ion battery. It is designed to drive up to 8 LEDs with a constant current mode of 200mA and features adjustable over-voltage protection. Programmable dimming features enable the LT3599IUH#PBF to accurately control LED brightness by setting the LED current duty cycle. The device is also able to provide feedback to external systems with its 5-bit digital current control port.

The LT3599IUH#PBF is designed to operate from multiple sources and offers programmable frequency, low power consumption and wide dimming range which make it very versatile and appealing to manufacturers. It also includes frequency synchronization and pulse-by-pulse over current protection. The device is capable of monitoring the output current without the need for external sense resistors, allowing it to accurately balance current between strings and reduce total power dissipation. The LT3599IUH#PBF is available in a 2.2mmX3.3mm, Pb-free, 8-pin exposed pad WLCSP package.

This device includes a ripple cancelation feature which improves output accuracy, providing main and sub power supply. The main power supply is used to source the input current for the LED strings and the sub power supply is used to source the internal power for the controller, switch, and other working devices. The LT3599IUH#PBF also has an internal capacitor for higher power LED applications and offers a wide dimming range. It’s able to provide smooth LED dimming even without an external dimming module. An integrated current-limiting design and programmable over-voltage protection make the device suitable for higher current LED applications.

The LT3599IUH#PBF is the ideal solution for manufacturers that require a highly efficient, programmable and flexible dimming solution for LED lighting applications. The device is designed for power efficiency, low power dissipation, and improved system control. Its range of features make it highly appealing to manufacturers and makes it a desirable option for automotive, industrial and consumer LED lighting applications.

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