ZXLD383ET5TA Integrated Circuits (ICs)

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ZXLD383ET5TA is an LED driver application product within Pericom Semiconductor’s PMIC—LED Drivers portfolio. It is full featured, high efficiency, low voltage, 1.8V to 36V output synchronous buck driver, capable of driving up to 6A output current.

The product is specifically designed for LED lighting applications such as LED monitors and laptop screens, LED light engines and LED backlight, LED home appliances and LED signage and LED effects and control systems.

ZXLD383ET5TA offers 3 distinct operating modes – Buck, Buck-Boost and Boost - to allow for dynamic control of the LED load with its external components. It can maintain a steady output current up to 6.4A for a wide range of input voltage conditions. The output current can be programmed with an external resistor. It also supports a sophisticated mix of dimming techniques from Analog, PWM and I2C.

The ZXLD383ET5TA LED driver device also uses a low quiescent current draw which saves energy and extends the life of battery-powered systems. It is built with proprietary voltage-mode control and has a good transient response which results in low current ripple. The device also features soft start and over current protection, and it is easy to integrate into new or existing designs.

ZXLD383ET5TA’s operating principle draws on its combination of devices, such as voltage regulators, buck switches, and linear regulators, and supports up to five output buck regulators that enables it to effectively regulate the voltage input and output. The device begins by taking the voltage from the power source and lowering it down to the voltage level needed for the LED load.

Once the power is transferred to the load, the device then monitors the output current of the LED load and will adjust the duty cycle of the buck switch to maintain the set current. This is done continuously and quickly, which allows the current to remain stable and accurate even when the input voltage fluctuates.

In addition, the ZXLD383ET5TA LED driver device uses synchronous rectification which improves efficiency and reduces switching losses. The device offers a high level of safety by incorporating over-temperature shutdown and soft start protection, so that it cannot cause damage to the circuit or overload the LED load.

ZXLD383ET5TA offers exceptional performance benefits, with fast transient response, low quiescent current, long driving capability and wide input voltage range, making it an ideal solution for any LED lighting application.

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