6A, 24V High Efficiency PoL Regulators

Not Recommended For New Design as of 22-Sep-2015

    The FAN23SV56 is a highly efficient integrated synchronous buck regulator. The regulator is capable of operating with an input range from 7 V to 24 V and supporting 6 A continuous load currents. The device can operate from a 5 V rail (±10%) if VIN, PVIN, and PVCC are connected together to bypass the internal linear regulator.

    The FAN23SV56 utilizes Fairchild’s constant on-time control architecture to provide excellent transient response and maintain a relatively constant switching frequency. Pulse Frequency Modulation (PFM) Mode maximizes light-load efficiency by reducing switching frequency when the inductor is operating in Discontinuous Conduction Mode (DCM) at light loads, while clamping the minimum frequency above the audible range with Ultrasonic Mode.

    Switching frequency and over-current protection can be programmed to provide a flexible solution for various applications. Output over-voltage, under-voltage, over-current, and thermal shutdown protections help prevent damage to the device during fault conditions. A hysteresis feature restarts the device when normal operating temperature is reached.


    • VIN Range: 7 V to 24 V Using Internal Linear Regulator for Bias
    • VIN Range: 4.5 V to 5.5 V with VIN/PVIN/PVCC Connected to Bypass Internal Regulator
    • High Efficiency: Over 96% Peak
    • Continuous Output Current: 6 A
    • Accurate Enable Facilitates VIN UVLO Functionality
    • PFM Mode for Light-Load Efficiency
    • Excellent Line and Load Transient Response
    • Precision Reference: ±1% Over Temperature
    • Output Voltage Range: 0.6 to 5.5 V
    • Programmable Frequency: 200 kHz to 1.5 MHz
    • Programmable Soft-Start
    • Low Shutdown Current
    • Adjustable Sourcing Current Limit
    • Internal Boot Diode
    • Thermal Shutdown
    • Halogen and Lead Free, RoHS Compliant
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    Product Product &
    Eco Status
    Replacement Part Number Packing Method Convention Package Marking
    FAN23SV56MPX Not Recommended For New Design as of 22-Sep-2015
    Green as of Mar 2012
     China RoHS

    PQFN 5x5.5 34L  -  Details
    1.1 x 5.5 x 5.0mm,  TAPE REEL

    PDF PQFN 5x5.5 34L  Drawing
    Last Update: Jan 2015 PDF PQFN Tape and Reel Packing Drawing
    Last Update: Mar 2017
    Line 1$Y (Fairchild logo)
    &Z (Plant Code)
    &3 (3-Digit Date Code)

    Line 2FAN23

    Line 3SV56

    RƟJA 35°C/W

    RƟJC 2.7°C/W

    Moisture Sensitivity Level (MSL) 1

    Max Reflow Temp 260

    PDF RoHS IPC1752
    XML RoHS IPC1752
    PDF China RoHS

    If there is no sample button displayed at the top of the page, please contact one of the Fairchild distributors or your local sales office to obtain samples.
    * Click here for further top mark packaging information for FAN23SV56

    This product is general usage and suitable for many different applications.

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