MOSFET Drive Switching Regulator IC for Boost / Fly-back Converter

Data Sheet

Evaluation Board


  • Nch MOSFET Driving (Driving Voltage 5.3V (typ.))
  • Wide Operating Voltage Range (3V to 40V)
  • PWM Control
  • Wide Oscillating Frequency (40kHz to 1MHz)
  • Over Current Protection
  • UVLO (Under Voltage Lockout)
  • Standby Function
  • Package Outline (NJW4140R : MSOP8(VSP8)*MEET JEDEC MO-187-DA,NJW4140M : DMP8)

General Description

The NJW4140 is a MOSFET Drive switching regulator IC for Boost / Fly-back Converter that operates wide input range from 3V to 40V. It can provide large current application because of built-in highly effective Nch MOSFET drive circuit. Built-in pulse-by-pulse current detecting type over current protection limits the output current at over load. It is suitable for boost/fly-back application such as Car Accessory, Office Automation Equipment, Industrial Instrument and so on.

Design Simulation Models

Package Information

Part NumberPackage OutlinePLPPinsMaterial Declaration (RoHS/Halogen)Terminal FinishWeight(mg) (Reference)Reflow solderingFlow solderingIron solderingPacking ConditionMSLSolder Foot Print
NJW4140MDMP8-8Sn2Bi95YesYesYesNon dry pack1
NJW4140RMSOP8(VSP8)8Sn2Bi21YesYesYesNon dry pack1

Sample & Buy

Part NumberPackagesStatusPacking SpecificationSampleBuy
NJW4140MDMP8(Active)Contact UsStock Check
NJW4140RMSOP8(VSP8)(Active)Contact UsStock Check