LT3491ESC8#TRPBF

LED drivers are electronic devices that act as a constant current source for LED lamps. They provide reliable and repeatable performance from one LED string to the next and allow a more uniform appearance. Specifically, the LT3491ESC8#TRPBF is a high-voltage and high-current regulator which offers a fast, linear current-regulation scheme to drive large bursts of high-power LEDs. It features a wide input range, low output current ripple, and thermally-enhanced packages for increased thermal performance.

The LT3491ESC8#TRPBF contains a simplified application field and working principle, making it suitable for high-end automotive, industrial, and consumer applications. It operates from an input voltage range from 34V to 73V and is able to drive up to 6 LEDs in series without additional external components. The device provides constant current regulation from 1mA up to 1000mA, with low current ripple and controlled rise/fall times. It also integrates a programmable internal soft-start for LED dimming control, a remote output voltage sensing feature, and an external shutdown capability to allow for additional flexibility.

As a power management IC (PMIC), the LT3491ESC8#TRPBF operates with a switching frequency of up to 2.6MHz and is able to provide up to 95% power efficiency. The device is designed to minimize external components, including inductors, capacitors, and other analog components. It features several robust protection features, including thermal shutdown, overload protection, and short-circuit protection. It also has configurable overvoltage protection and reverse current protection.

The LT3491ESC8#TRPBF is ideal for applications such as automotive headlamps, automotive interior lighting, and solid-state lighting. It is also suitable for industrial applications such as LCD backlighting, displays, billboards, and medical equipment. Moreover, the LT3491ESC8#TRPBF can be used in consumer applications such as tablet backlighting and LCD-TV edge lighting.

The LT3491ESC8#TRPBF is offered in a thermally enhanced package which includes an exposed pad for improved thermal performance. It is available from either a 4mm x 5mm QFN-28 or a 5mm x 6mm QFN-32 package option. It is capable of operating at temperatures of up to +125°C.

In summary, the LT3491ESC8#TRPBF is a high-voltage and high-current PMIC which offers a fast, linear current-regulation scheme to drive large bursts of high-power LEDs. It features a wide input range, low output current ripple, and thermally-enhanced packages for increased thermal performance. It is ideal for a variety of applications including automotive, industrial, and consumer applications. Furthermore, the device integrates robust protection features and is offered in thermally enhanced packages.