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MAX8792 Hoja de datos - Maxim Integrated

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Número de pieza
MAX8792

Other PDF
  2007  

PDF
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page
28 Pages

File Size
410.3 kB

Fabricante
MaximIC
Maxim Integrated MaximIC

General Description
The MAX8792 pulse-width modulation (PWM) controller provides high efficiency, excellent transient response, and high DC-output accuracy needed for stepping down high-voltage batteries to generate low-voltage core or chipset/RAM bias supplies in notebook computers. The output voltage can be dynamically controlled using the dynamic REFIN, which supports input voltages between 0 to 2V. The REFIN adjustability combined with a resistive voltage-divider on the feedback input allows the MAX8792 to be configured for any output voltage between 0 to 0.9VIN.


FEATUREs
♦ Quick-PWM with Fast Transient Response
♦ Supports Any Output Capacitor
    No Compensation Required with Polymers/Tantalum
    Stable with Ceramic Output Capacitors Using External Compensation
♦ Precision 2V ±10mV Reference
♦ Dynamically Adjustable Output Voltage (0 to 0.9VIN Range)
    Feedback Input Regulates to 0 to 2V REFIN Voltage
    0.5% VOUT Accuracy Over Line and Load
♦ 26V Maximum Input Voltage Rating
♦ Adjustable Valley Current-Limit Protection
    Thermal Compensation with NTC
    Supports Foldback Current Limit
♦ Resistively Programmable Switching Frequency
♦ Overvoltage Protection
♦ Undervoltage/Thermal Protection
♦ Voltage Soft-Start and Soft-Shutdown
♦ Monotonic Power-Up with Precharged Output
♦ Power-Good Window Comparator


APPLICATIONs
    Notebook Computers
    I/O and Chipset Supplies
    GPU Core Supply
    DDR Memory—VDDQ or VTT
    Point-of-Load Applications
    Step-Down Power Supply

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