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NJW4814 Series
Dual H-Bridge Driver with Boost Converter

Download Datasheet
ECAD Model: Learn more
  • Standard
  • RoHS
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Description

The NJW4814 is a dual H-bridge driver with boost converter IC. It can boost the output voltage from Li-ion battery and/or a 5V power supply and drives a piezo device by two H- bridge drivers. 48ms of internal fixed soft start function of the boost circuit sets a limit to startup current. The dual H-bridge drivers have independent signal inputs and a fault output function, therefore the NJW4814 improves controllability from a microcomputer.The input frequency of H-bridge driver is up to 300kHz.

Spec

Standard
Channels 4(Half)
Output Rise/Fall Time Typ. 400nsec / 340nsec
Structure Bi-CMOS Technology
Wide Operating Temperature -40℃ to +85℃
Junction Temp. +150℃
Package EQFN24-LE
Boost Converter Block Output Switch Voltage (40V max.)
Switching Current (1.5A min.)
PWM Control
Oscillation Frequency Range (380k to 1MHz)
Soft Start Function (48ms typ.)
Over Current Protection
Over Voltage Protection
H-Bridge Driver Block Internal 2 Channel H-Bridge
Each Channel Operates Individually
Over Current Protection (±300mA typ.)
Switching Frequency (300kHz max.)
Output Shut Down Control
Fault Indicator Output
Note Under Voltage Lockout
Built-in Thermal Shutdown
Standby Function

Download Datasheet

Protections / Functions

UVLO OCP TSD Reverse

Functional Description

UVLO Undervoltage Lockout Protection
OCP Overcurrent Protection
TSD Thermal Shutdown Function
Reverse Current Protection Reverse Current Protection

Functional Description

UVLO Undervoltage Lockout Protection
OCP Overcurrent Protection
TSD Thermal Shutdown Function
Reverse Current Protection Reverse Current Protection

Search for similar products under conditions below.

Category:Switching Drivers

Sub Ctegory Boost Converter
No.of Circuit 4
Drive Circuit Half
Supply Voltage
min(V)		 2.7
Supply Voltage
max(V)		 5.5
Output Peak
Current typ(A)		 ±0.3
Switching Current
min(A)		 1.5
Switching Current
(Boost)
min (A)		 1.5

Technical Documents

Quality & Packages

Product Name Compatibility Package Marking Reliability
NJW4814MLE
  • gradeConsumer
 EQFN24-LE - NJW-1-s-r
  • 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.

Buy / Contact

  • Purchase, Request for samples and documents
    Sales are made through distributors. Please contact your local distributors for any sales-related inquiry such as price.
  • Available from 1 piece!
    Our electronic device products are available through our authorized online distributors.
  • Technical Support
NJW4814 Series