NJW4128 Series
Switching Regulator IC for Buck Converter Current Mode Control with 40V/2.5A MOSFET

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  • Description

    The NJW4128 is a buck converter with 40V/2.5A MOSFET. It corresponds to high oscillating frequency, and Low ESR Output Capacitor (MLCC) within wide input range from 4.5V to 40V.Therefore, the NJW4128 can realize downsizing of applications with a few external parts so that adopts current mode control.Also, it has a soft start function, external clock synchronization,over current protection and thermal shutdown circuit.It is suitable for supplying power to a Car Accessory, Office Automation Equipment, Industrial Instrument and so on.

  • Spec
    Consumer Automotive
    Input Voltage Range 4.5 V to 40 V (45 V)
    Operating Temperature Range -40°C to 85°C -40°C to 125°C
    Supply Current Typ. 4000 µA
    Standby Current 3 (max.) µA
    Output Voltage Range 0.8 V to 35.2 V
    Output Voltage Accuracy ± 1 %
    Output Current 2500 mA
    Oscillator Frequency 450kHz typ.(A ver.), 300kHz typ.(B ver. 450kHz typ.
    Package HSOP8-M1
    Control Current Mode Control / PWM Control
    Function Standby Function
    Soft Start Function (4ms typ.)
    Over Current Protection (Hiccup type)
    Thermal Shutdown Protection
    Power Good Function
    Note UVLO (Under Voltage Lockout)
    Built-in Compensation Circuit
    External Clock Synchronization
    Correspond to Ceramic Capacitor (MLCC)
    If you need datasheets of this
    product, please contact us.

    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
    Documents
  • Quality &
    Packages
    • Refer to the datasheets for the details on the product.
    • The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
    • Please contact us or our distributors for unpublished reliability information.

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

Search for similar products under conditions below.

Category:DC/DC Switching Regulators

Topology Buck,Inverting
VIN
min (V)
4.5
VIN
max (V)
40
VOUT
min (V)
0.8
VOUT
max (V)
35.2
IOUT
(mA)
2500
ISS
(µA)
4000