NJW4119 Series
Buck Switching Regulator with Voltage Correction Circuit

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  • Description

    The NJW4119 is a buck switching regulator with voltage correction circuit that delivers up to 2.4 A of output current. The voltage correction (cable drop compensation) raises the output voltage in proportion to the load current. This function corrects the voltage drop due to cable or writing board resistance. Unique features, such as soft-start, power-good output and error flag output make the NJW4119 ideal for portable devices charged with USB cable.


    • Car Infotainment
    • USB Chargers

  • Spec
    Input Voltage Range 6.5 V to 40 V (45 V)
    Operating Temperature Range -40°C to 125°C
    Supply Current Typ. 3000 µA
    Standby Current 10 (max.) µA
    Output Voltage Range 5.1 V to 5.185 V
    Output Voltage Accuracy ± 1 %
    Output Current 2400 mA
    Maximum Duty Cycle 100%
    Package HTSSOP24-P1
    Function Soft-Start (Adjustable with external capacitors)
    Power-Good Output
    Note Overcurrent Protection (Hiccup type)Adjustable limit value with external resistance
    Undervoltage Lockout
    Thermal Shutdown Circuit with Hysteresis
    ON/OFF Control
    Discharge at OFF-State

    Protections / Functions

    TSD ILX OCP OVP UVLO OVLO Reverse Shutdown Soft Start SSCG PGOOD Auto Discharge Anti-ringing Sequencing Max Duty Ext. Phase LED Adjust
  • Technical
    • Related Links

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  • Quality &
    • Refer to the datasheets for the details on the product.
    • The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.

Download Datasheet

Functional Description

TSD Thermal Shutdown Function
ILX LX Current Limit Function
OCP Overcurrent Protection
OVP Overvoltage Protection
UVLO Undervoltage Lockout Protection
OVLO Overvoltage Lockout Protection
Reverse Reverse Current Protection Circuit
Shutdown Shutdown Function
Soft Start Soft Start Function
SSCG Spread Spectrum Clock Generator Function
PGOOD Power Good Output
Auto Discharge Auto Discharge Function
Anti-ringing Anti-ringing Switch Function
Sequencing Start-up Sequencing Control
Max Duty Maximum Duty Cycle
Ext. Phase Externally Adjustable Phase Compensation
LED Adjust LED High-speed Dimming Control

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Category:DC/DC Switching Regulators

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