NJW4150A Series
Internal 40V MOSFET Switching Regulator IC for Buck Converter

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  • Description

    The NJW4150A is a buck converter with 40V/300mA MOSFET. It corresponds to high oscillating frequency, and Low ESR Output Capacitor (MLCC) within wide input range from 6.2V to 40V. Therefore, the NJW4150A can realize downsizing of an application with a few external parts. Also, it has a soft start function, an over current protection and a thermal shutdown circuit. It is suitable for logic voltage generation from high voltage that Car Accessory, Office Automation Equipment, Industrial Instrument and so on.

  • Spec
    Input Voltage Range 6.2 V to 40 V (45 V)
    Operating Temperature Range -40°C to 125°C
    Supply Current Typ. 2750 µA
    Standby Current 1 (max.) µA
    Output Voltage Range 1 V to 38 V
    Output Voltage Accuracy ± 1 %
    Output Current 300 mA
    Oscillator Frequency 1MHz typ. (A ver.)
    Maximum Duty Cycle 100%
    Package MSOP8(TVSP8)
    Control PWM control
    Function Standby Function
    Soft Start Function (4ms typ.)
    Over Current Protection
    Thermal Shutdown Protection
    Note UVLO (Under Voltage Lockout)
    Correspond to Ceramic Capacitor (MLCC)

    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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