LMZ31506HRUQR

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DC DC converters come in various forms, from adjustable voltage converters to power supplies and high-powered invertors. The LMZ31506HRUQR is a switching regulator designed to drive small to medium power LED arrays. It incorporates the current-mode Pulse Width Modulation (PWM) control to regulate the output current and can detect output short circuits.

The LMZ31506HRUQR is capable of driving up to 16 LED strings from two channels. It uses a constant current to drive the two channels independently. The application field ranges from general lightings, landscape lightings, architectural lightings, LED strips, and automotive lightings. It is a high-efficiency and cost-effective power management solution.

The LMZ31506HRUQR works according to the principle of phase-shift pulse width modulation (PWM), whereby a fixed-frequency and variable-duty cycle control signal is used to control the output current. The device uses an external sensing resistor to sense the output current and controls the output voltage accordingly. A temperature monitoring circuit is included to ensure safe operation by limiting the maximum die temperature. A low-side FET is included to provide short-circuit protection against current surges.

The LMZ31506HRUQR provides a number of advantages for LED lighting applications. It offers high power efficiency, a wide operating temperature range, good EMC characteristics, and low radiation. The adjustable current is accurate and changes with changes in temperature.

The regulator can support a wide range of input voltages from 8 V to 36 V and can reach output currents up to 700 mA. Its high frequency operation up to 500 kHz allows the use of small size inductors and capacitors resulting in compact PCB size and low BOM cost. The device operates from a standard 5V or 3V logic supply and can be configured in either Boost or Buck Switching Regulator mode.

The LMZ31506HRUQR offers an excellent combination of features and performance in a small package. It is an ideal solution for high current lighting applications where size and cost are of paramount importance. The device is capable of regulating constant current regardless of input voltage fluctuations, temperature changes, and other environmental conditions, allowing lighting applications to be reliable and dependable.

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