LT3796HFE#PBF

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LT3796HFE#PBF is an advanced pulse width modulation (PWM) current mode controller which belongs to Power Management ICs (PMICs) – LED Drivers. It is specifically designed to control constant current power applications including linear, buck and boost topologies.

The LT3796HFE#PBF is able to regulate the current of LEDs (light emitting diodes) with precision, even in the harshest of conditions of high temperature and low voltage. It operates across a wide input voltage range from 2.7V to 42V and can support up to six strings of LEDs running at up to 4A. Its built-in 4-level over voltage protection adds an extra layer of protection to the LT3796HFE#PBF. This provides greater current accuracy, improving precision of the LED strings’ brightness.

LT3796HFE#PBF has built-in frequency dithering circuitry allowing the user to select from three different operating frequencies – 12kHz, 100kHz, and 500kHz (from 1kHz to 500kHz). As a result of its three frequency programmability, the LT3796HFE#PBF can accurately control the current over the entire range of illumination temperatures. Furthermore, its Wide Input Voltage Range Low Shutdown Current feature automatically adjusts the amount of current required during operation.

The LT3796HFE#PBF stands out with its wide operating temperature range from -40°C to 125°C. This features make it well-suited for applications where low power consumption and temperature control are critical, such as LED driver systems. In addition, the device has also been designed with a wide operating power range, making it suitable for both AC and DC products – such as LED street lights, stage lights, garden lights and indoor illumination.

This advanced device integrates a unique current fold-back circuit, which is capable of regulating the short-circuit and open-circuit currents. This ensures that a current limit is maintained in the event of a short or open LED string, and therefore it can achieve a stable LED operation even in the event of varying LED string numbers/ lengths or LED string current mismatches.

The LT3796HFE#PBF is an advanced and highly reliable current mode PWM controller which, thanks to its wide operating temperature range and precision current control, is an excellent choice for applications requiring accurate LED current control over a wide range of circumstances. Its wide input voltage range and its capability to accurately control up to 6 strings of LEDs make it an ideal choice for higher power applications with fewer strings of LEDs.

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