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AP3503F (Not Recommended for New Design (NRND))

340kHz, 3A Synchronous DC-DC Buck Converter

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Description

The AP3503F is a 340kHz fixed frequency, current mode, PWM synchronous buck (step-down) DC-DC converter, capable of driving a 3A load with high efficiency, excellent line and load regulation. The device integrates N-channel power MOSFET switches with low on-resistance. Current mode control provides fast transient response and cycle-by-cycle current limit. The AP3503F employs complete protection to ensure system security. Including output Over Voltage Protection, input Under Voltage LockOut, programmable soft-start, Over Temperature Protection to safeguard the circuit.

Application(s)

  • LCD TV
  • Set Top Box
  • Portable DVD
  • Digital Photo Frame
  • Product Specifications

    Product Parameters

    Type Buck
    Efficiency (%) 95 %
    HS RDS(ON) (mΩ) 100 mΩ
    LS RDS(ON) (mΩ) 100 mΩ
    Frequency Typ (Hz) 340 kHz
    MinimumInput Voltage (V) 4.5 V
    MaximumInput Voltage (V) 18 V
    Output Current (mA) 3 A
    Output Voltage (V) 0.925 to 15 V
    Quiescent Current Typ (mA) 1.2 mA
    Shutdown Current Typ (µA) 0.1 µA

    Related Content

    Packages

    Technical Documents

    Recommended Soldering Techniques

    TN1.pdf

    Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
    Contact Sales
    Request Samples
    Qty. Carrier
    AP3503FMPTR-G1 Not Recommended for New Design (NRND) SO-8 TPGP 4000 T&R Contact Sales
    AP3503UFMPTR-G1 Not Recommended for New Design (NRND) SO-8EP GREEN 4000 T&R Contact Sales

    Environmental Compliance Legend:
    LFF: Pb-Free Finish and RoHS 5/6
    TLFP: Totally Pb-Free Product and RoHS 6/6
    LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
    TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
    GREEN: Halogen-free and RoHS compliant
    RoHS: RoHS compliant but NOT halogen-free

    Product Change Notices (PCNs)

    A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

    PCN # Issue Date Implementation Date Subject
    PCN-2555 2021-11-11 2022-05-11 Device End of Life (EOL)