NJW4161 Series
MOSFET Drive Switching Regulator IC for Buck Converter

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  • Description

    The NJW4161 is a MOSFET Drive switching regulator IC for Buck Converter that operates wide input range from 3.1V to 40V. It can provide large current application because of built-in highly effective Pch MOSFET 10V drive circuit. There are two types, Hiccup type and Latch type, of over current protection version. 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 3.1 V to 40 V (45 V)
    Operating Temperature Range -40°C to 125°C
    Supply Current Typ. 1500 µA
    Standby Current 2 µA
    Output Voltage Range 0.8 V to 38 V
    Output Voltage Accuracy ± 1 %
    Oscillator Frequency 50kHz to 1MHz
    Maximum Duty Cycle 100%
    Package MSOP8(VSP8)
    Control PWM Control (Automatic PWM/PFM Control improves power efficiency at light load. (C ver.))
    Function Standby Function
    Soft Start Function (15ms (typ.))
    Over Current Protection (Hiccup type (A, C ver.)Latch type (B ver.))
    UVLO (Under Voltage Lockout)
    Note Thermal Shutdown Protection

    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

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