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Antenna Driver

Features include an oscillator circuit and 1ch half-bridge pre-driver for 125kHz drive. A drive current adjustment function is also included. 

RoHM'SPower Management ICs for Automotive Body Control

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Specifications Part No. Package Features
1ch Half-Bridge Pre-Driver
BD6934FV

SSOP-B16


Block Diagram
Expanded
  

Features

Adjustable radio range via supply voltage control

PWM-based supply voltage control driving enables adjustment of the radio receiving range. The supply voltage value (variable between 3.5V and 8V) determines the output duty, which in turn sets the radio output strength.A high supply voltage results in an output duty near 50%, increased drive current, and high current output strength. In addition, a low voltage malfunction prevention circuit (UVLO) is built in that turns OFF the otuput transistor once Vcc goes below 3V.

  
Expanded
Internal antenna driver features simple 2-line control and output settings
2 selectable modes: internal oscillation or external pulse
Built-in resistance for the Gate-Source of the external FET enables output logic setting during drive OFF
0µA standby current

Product Inquiries


Antenna Driver

Part No. Supply
voltage
(V)		 Circuit current
(Standby)
(μA)		 Circuit current
(Active)
(mA)		 Output ON Duty Operating temperature
(℃)		 Package RoHS Distribution
Inventory
Vcc=3.5V
(%)		 Vcc=4.0V
(%)		 Vcc=7.0V
(%)
BD6934FV 3.5 8.0 0 3.5 9.2 15 49 SSOP-B16 Yes

 

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