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IC Electronic information

AME5280: a DC-DC power management controller

In Electronic Infomation Category: A | on April 18,2011

AME5280 is a DC-DC power management controller, the high efficiency synchronous switching DC converter, 3V ~ 5.5V input voltage range, 4A continuous current output, the maximum instantaneous current output of 5.3A. Transistor on-resistance only 80m, can be significantly reduced when a large current through the waste heat energy. 300KHz ~ 1.4MHz adjustable frequency, frequency step-down to meet the general requirements. Synchronous rectifier buck, do not need an external Schottky diode under the bridge components, reduce power consumption and UC3879DW datasheet and improve the overall efficiency and UC3879DW price and reduce costs.

In protection, AME5280 down-short-circuit protection, short circuit in the current situation is too large can automatically reduce the frequency, the current stability in the fixed value to avoid overheating, and UC3879DW suppliers and then with over-temperature protection and over current protection, provide the most complete protective mechanism to ensure that products operate with no fear.

AME5280 suitable for use in 5V step-down to a minimum 0.8V input supply high current applications, especially suitable for LCD TVs, LCD monitors, networking products such as the current low-voltage systems over 2A of the main chip applications and enhance the excellent power control system, effectively save energy and circuit board area, and suggested that with the AME8851 AME5290 with such high-current step-down DC-DC converter and linear regulator to provide 5V step-down the complete solution to the 3.3V/2.5V/1.8V/1.1V program. AME5280 provide the most extensive SOP-8/PP package, for a variety of system board requirements.

Features

conversion efficiency up to 95%

the largest 4A continuous current output

output into the terminal with isolation

Built 80m on-resistance of transistor

support low equivalent resistance of the capacitor component

Over temperature protection

over-current protection

with over-voltage protection function

Adjustable output voltage down to 0.8V

down-circuit protection

adjustable voltage and adjustable frequency design, and EN function and the external compensation circuit to provide a stable voltage output

at least the peripheral parts

UC3879DW datasheetUC3879DW suppliersUC3879DW Price

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