LM2791LDX-L/NOPB

LED drivers are important components in designing and optimizing of the performance of an LED system. From small- to medium-scale applications, to large-scale industrial applications, LED drivers are required to provide powerful and reliable illumination without any risk of damage. The Texas Instruments LM2791LDX-L/NOPB is a PMIC - LED Driver that is a current-limited switchmode buck regulator capable of driving up to 8 LEDs connected in series. It combines the advantages of both hysteretic and DCM (Discontinuous Conduction Mode) control schemes.

The LM2791LDX-L/NOPB works by converting an input voltage into a regulated output voltage or current. To drive a series of LEDs, a switching regulator increases the input voltage to a level high enough to drive the desired set of LEDs. Since the output current and voltage are related, a minimum input voltage is needed to ensure Leds will have the correct current. It extends the life of the LED system by incorporating LED open circuit and LED failure protection.

As a switch-mode LED driver, the LM2791LDX-L/NOPB is suitable for applications where constant power is applied to an LED string such as HVAC, consumer electronics, and sign and display, as well as Automotive Lighting. Versatile applications extend to both lighting and driving other types of loads such as sensors, motors, and solenoids. Its current modes feature cable drop compensation and adjustable slew rate for easy implementation of optimized LED color rendering, flicker free control, and multi-string LED lighting in LED based PoE (Power over Ethernet) systems. To maximize energy efficiency, it includes an adjustable operating frequency, a low 86µA quiescent current, and a programmable LED Brightness range.

LM2791LDX-L/NOPB is available in wide variety of packages, including a 16-pin powerSO. The integrated inductor internally allows up to 2.0A of switch current, and a voltage range of up to 40V. The device supports a wide range of input and output voltages, and the operating temperature range extends from -40℃ - +105℃. The device also offers accurate current regulation, allowing for programmable current regulation, and a built-in analog dimming interface for dimming control. The device also supports a power good (PG) output, which can be used to monitor the operating condition, and an optional external dimming function.

In summary, the LM2791LDX-L/NOPB is a high-efficiency PMIC - LED Driver that is suitable for a wide range of applications. It allows for efficient power conversion, and offers a complete LED solution that can be easily implemented into LED lighting systems. The device combines the benefits of both hysteretic and DCM control, and features versatility and easy programming. It ensures reliable LED operation with protection against LED open circuit, LED failure and over-temperature conditions. Moreover, it offers programmable LED brightness range, a wide range of input and output voltages, and a wide operating temperature range.