NJW4813 Datasheet, PDF (1/14 Pages) New Japan Radio – Dual Half Bridge Driver with Boost Converter

NJW4813
Dual Half Bridge Driver with Boost Converter
GENERAL DESCRIPTION
The NJW4813 is a dual half bridge driver with boost converter IC.
Output voltage boost from Li-ion battery and a 5V power supply and
can drive a piezo device by two half bridge drivers.
The NJW4813 is able to stable startup by soft start function in boost
SW.REG..
The dual half bridge driver improves control characteristics from a
microcomputer in response to independent signal input in each channel.
The input frequency operates to 300kHz and in the case of failure, it
can output a fault flag.
■ PACKAGE OUTLINE
NJW4813SE3
FEATURES
Boost Converter Block
Half 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
40V max.
1A min.
2.7 to 5.5V
380k to 810kHz
17ms typ.
Internal 2-Channnel Half Bridge
Each Channel Operates Individually
Output Switch Peak Current
Operating Voltage Range
Switching Frequency
Output Shut Down Control
Over Current Protection
Fault Indicator Output
+280 / -250mA typ.
8.0 to 35V
300kHz max.
NJW4813SE3 : PCSP20-E3
Ver.2012-10-19
-1-