DESCRIPTION

This device is a quad power driver circuit in BTL configuration, intended for use as a power driver for servo systems with a single supply.

It’s specially dedicated to compact disc players and it’s capable of driving focus & tracking actuators sledge & spindle motors.

The regulators are mainly used to have a 5V supply for the power part and a lower programmable voltage for the logic circuits.

■ 4 BUILT-IN POWER BRIDGES (4 x 0.6A)

■ NO EXTERNAL COMPONENTS

■ SINGLE POWER SUPPLY

■ WIDE SUPPLY VOLTAGE RANGE (6 TO 15V)

■ 5V REGULATOR DRIVER FOR EXTERNAL PASS TRANSISTOR WITH FOLD-BACK SHORT CIRCUIT PROTECTION

■ ADJUSTABLE REGULATOR (2.0 TO 3.6V @ 200mA) WITH SHORT CIRCUIT PROTECTION

TDA7473属于集成电路（IC） > 全半桥驱动器。意法半导体（ST）集团制造生产的TDA7473全半桥驱动器器件属于电桥驱动器电源管理集成电路 (PMIC) 系列，包含两个或多个功率晶体管，以及在外部器件控制下将其用作开关所需的电路。这些晶体管通常在内部配置为成对串联连接（称为半桥），因而任意指定晶体管对之间的结点都可以连接至两个电源轨中的任一个。这类器件常用于将控制器件（如微控制器）提供的低电平信号转换为操作执行器（如步进电机或无刷电机）所需的较大功率信号。