LM3555TLE/NOPB Integrated Circuits (ICs)

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The LM3555TLE/NOPB belongs to the PMIC– LED Drivers category of components. This device is uniquely designed to address the needs of LED backlighting and flash applications. It is a buck-boost topology powered LED driver Regulator IC and provides a regulated current to LEDs. It features a PWM input that can be used to dim the LEDs while keeping the same current regulated output. The LM3555TLE/NOPB is a low power consumption device that is capable of driving multiple LEDs simultaneously. These features make the LM3555TLE/NOPB a great choice for applications such as cellular phones, automotive lighting, and other embedded systems.

The LM3555TLE/NOPB is a monolithic buck-boost switch regualtor with a PWM dimmable current sink output. It has an integrated charge pump which allows the output voltage to be internally adjusted from 1.25V to 40V to adapt to various LED characteristics. This IC also comes with a low battery detect feature that will turn off the LED when the battery voltage falls below the specified minimum.

The LM3555TLE/NOPB operates in 3 different modes, depending on the state of the external PWM signal. In PWM mode, the LED brightness is adjusted by the duty cycle of the PWM signal. In Standby mode, the LED can be programmed to maintain dim to-off brightness with no PWM signals needed. In shutdown mode, the IC shuts down and draws no current.

The LM3555TLE/NOPB features a number of advanced features that are designed to optimize performance. It can tolerate a wide input voltage range from 2.7V to 40V and support a synchronous rectification topology with switching frequency from 500kHz to 1.5MHz. It has an adjustable soft start and programmable LED current limits that are designed for LED safety.

The LM3555TLE/NOPB is a compact and cost-effective solution for LED backlighting and flash applications. It is designed to be easy to implement and can provide up to 0.9A of current for driving multiple LEDs. It is a highly reliable device with a wide range of benefits and features that make it a great choice for any type of application that requires LED backlighting.

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