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NJW4814 - Dual H-Bridge Driver

Description

The NJW4814 is a dual H-bridge driver with boost converter IC.

supply and drives a piezo device by two H- bridge drivers.

to startup current.

Features

  • Boost Converter Block H-Bridge Driver Block Under Voltage Lockout Built-in Thermal Shutdown Standby Function Package Outline Output Switch Voltage Switching Current PWM Control Operating Voltage Range Oscillation Frequency Range Soft Start Function Over Current Protection Over Voltage Protection 40V max. 1.5A min. 2.7 to 5.5V 380k to 1MHz 48ms typ. Internal 2 Channel H-Bridge Each Channel Operates Individually Over Current Protection Operating Voltage Range Switching Frequency Output Shut Dow.

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Full PDF Text Transcription

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NJW4814 Dual H-Bridge Driver with Boost Converter GENERAL 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.
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