LT3063IMS8E#PBF

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LT3063IMS8E#PBF is part of the Linear Voltage Regulator family produced by Analog Devices. It is a 3-channel high-side current source used to replace conventional LEDs in applications where higher peak currents are desired. It consists of two high-side switches with integrated current steering and voltage regulation, and a digitally-controlled analog multiplexer. It is optimized for applications such as displays, signal backlighting and RGB LED current control.

The LT3063IMS8E series offers exceptional flexibility in current programming and channel mixing, as well as high temperature stability, high accuracy, and small operating headroom. It is available in leading-edge packaging options and an extended You-Trim adjustable voltage range.

The LT3063IMS8E #PBF operates over an input voltage range of 2.3V to 28V and can source/sink up to 2A/3A of current. The quiescent current is typically 9 µA and it features an auto-standby mode to further reduce the quiescent current to 0.6 µA. It also provides over-temperature protection and over-current protection. Additionally, it has a 10-bit DAC on the external Resistor (Rdac) pin, which can be used to program the output current in the range of 0.5mA to 2A.

The LT3063IMS8E#PBF is suitable for variety of applications where high-current control is needed such as LCD Backlight module for portable devices, as well as CCTV / surveillance and automotive/ heavy vehicles. It can also be used in Motor Control applications, where it can be used to regulate the current going to an electric motor and adjust the torque being provided by the motor.

The LT3063IMS8E#PBF’s working principle involves sensing the voltage drop across a resistor and adjusting the current it supplies to match that voltage. An internal regulating circuit constantly monitors the current and adjusts it accordingly to maintain the desired voltage. It features a high-side current steering architecture with two channels of input/output, a digital controlled analog multiplexer, and a digitally controlled current adjustment.

The Mux control pin determines which current sense resistor’s voltage is sampled, and the Rdac control pin is used to adjust the output current. The output current is adjusted by digitally selecting resistors to change the gain of the internal amplifier. This feature allows for fine tuning of the output current with a resolution of 0.5mA.

The LT3063IMS8E#PBF is a great choice for applications that require high current control and regualtion in a wide range of temperatures. It offers a noise-free operation, small operating headroom and high accuracy, as well as good efficiency under load. Moreover, its sophisticated current control, temperature protection and over-current protection ensure that the application’s current requirements can be met safely and efficiently.

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