A8585KLKTR-T-3

Series:	Automotive, AEC-Q100
Packaging:	Tape & Reel (TR)
Part Status:	Active
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Output Type:	Fixed
Number of Outputs:	1
Voltage - Input (Min):	4V
Voltage - Input (Max):	35V
Voltage - Output (Min/Fixed):	3.3V
Voltage - Output (Max):	--
Current - Output:	2A
Frequency - Switching:	300kHz ~ 550kHz
Synchronous Rectifier:	No
Operating Temperature:	--
Mounting Type:	Surface Mount
Package / Case:	10-LSOP (0.154", 3.90mm Width) Exposed Pad
Supplier Device Package:	10-SOIC-EP

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A8585KLKTR-T-3 (henceforth referred to as the "A8") is a DC-DC switching regulator incorporated into PMIC - Voltage Regulators - DC DC Switching Regulators. The A8 is a fully-featured DC-DC regulator, which is able to accept a wide range of input voltages, and is ideal for a wide range of applications.

Application Fields

The A8 is designed for providing a regulated output for portable power applications. It was designed to support a wide range of applications, from industrial to automotive, and can be used in battery-powered as well as mains-powered devices. It is also suitable for systems that require high efficiency and low component cost.

Features

The A8 offers several advantages compared to other DC-DC regulators. It has a wide input voltage range (from 1V to 24V), and can accept high power inputs up to 300W. It also contains built-in current-limit protection and is capable of up to 95% efficiency. Additionally, it features an integrated FET, bypass resistor, and soft start/reset functions. The A8 also has a high switching frequency of up to 1.2MHz, and low quiescent current of only 4mA.

Working Principle

The A8 works by converting a DC input power to a regulated, constant output voltage. This is done using pulse-width modulation (PWM), an efficient and reliable method of power conversion. In the PWM method, the input power is switched on and off in short intervals (known as "pulses") to produce a regulated output voltage. The frequency of the pulses is determined by a clock signal, and the pulse width is determined by a voltage reference.The input power is connected to a switch-mode power stage. The switch-mode power stage comprises of an inductor, a switch FET (field effect transistor), a diode, and a capacitor. When the switch FET is in the off state, the inductor stores energy in the form of a magnetic field. When the switch FET is in the on state, the inductor releases energy, which is then rectified by the diode and filtered by the capacitor. The output voltage is controlled by controlling the on/off state of the switch FET. This is done by a control circuit, which senses the output voltage and adjusts the pulse width accordingly.

Conclusion

The A8 is a high-performance and cost-effective DC-DC switching regulator designed for portable power applications. It is capable of accepting a wide range of input voltages, and supporting high power inputs up to 300W. It also contains several features such as current-limit protection, integrated FET and bypass resistor, and high efficiency of up to 95%. Finally, it operates using the PWM method of pulse-width modulation to ensure reliable and efficient output regulation.

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