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Power Management

Current Mode Control Internal 1.8A MOSFET Switching Regulator IC for Buck Converter (Wide Input Range Products)

  • Current Mode Control
  • External Clock Synchronization
  • Wide Operating Voltage Range (4.5V to 40V)
  • Switching Current (2.7A min.)
  • PWM Control
  • Built-in Compensation Circuit
  • Correspond to Ceramic Capacitor (MLCC)
  • Oscillating Frequency (
    450kHz typ.(A, C ver.)
    300kHz typ.(B ver.))
  • Soft Start Function (4ms typ.)
  • UVLO (Under Voltage Lockout)
  • Over Current Protection (Hiccup type)
  • Thermal Shutdown Protection
  • Power Good Function (NJW4155GM1 only)
  • Standby Function
  • Package Outline (NJW4155GM1:HSOP8-M1/NJW4155DL3:TO-252-5-L3)
General Description
The NJW4155 is a buck converter with 40V/1.8A MOSFET. It corresponds to high oscillating frequency, and Low ESR Output Capacitor (MLCC) within wide input range from 4.5V to 40V. Therefore, the NJW4155 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.
Package Information
Part Number Package Outline Pins Material Declaration (RoHS/Halogen) Terminal Finish Weight(mg) (Reference) Reflow soldering Flow soldering Iron soldering Packing Condition MSL Solder Foot Print
NJW4155GM1 download
8 Pure Sn 81 Yes - - Non dry pack 1
NJW4155DL3 download
5 Sn2Bi 301 Yes Yes Yes Non dry pack 1
Sample & Buy
Part Number Packages Status Packing Specification Sample   Buy   
NJW4155GM1-A HSOP8-M1 (Active)
NJW4155GM1-B HSOP8-M1 (Active)
NJW4155DL3-B TO-252-5-L3 (Active)
NJW4155GM1-C HSOP8-M1 (Active)

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