NJW4814 Series
Dual H-Bridge Driver with Boost Converter
NJW4814 Series
Dual H-Bridge Driver with Boost Converter
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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 |
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 |
Technical Documents
Quality & Packages
- 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.
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NJW4814 Series