NJW4131B Series
Switching Regulator IC for Boost Converter with 40V/1.4A or 40V/1A MOSFET

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  • Description

    The NJW4131B is a boost converter with 40V/1.4A or 40V/1A MOSFET. It corresponds to high oscillating frequency, and Low ESR Output Capacitor (MLCC) within wide input range from 4.0V to 35V.Therefore, the NJW4131 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 power supply to a Car Accessory, Office Automation equipment, Industrial Instrument, LED and so on.

  • Spec
    Input Voltage Range 4 V to 35 V (40 V)
    Operating Temperature Range -40°C to 85°C
    Supply Current Typ. 2300 µA
    Standby Current 1 (max.) µA
    Output Voltage Range 4 V to 33 V
    Output Voltage Accuracy ± 1 %
    Output Current Switching Current 1000 mA
    Oscillator Frequency 300kHz to 1MHz
    Package MSOP8(VSP8)
    Control PWM Control
    Function Standby Function
    Soft Start Function (4ms typ.)
    Over Current Protection/Thermal Shutdown Protection
    Note UVLO (Under Voltage Lockout)

    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
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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

Topology Boost
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max (V)
min (V)
max (V)