A3909集成電路（IC）的全半橋驅(qū)動器規(guī)格書PDF中文資料

A3909屬于集成電路（IC）的全半橋驅(qū)動器。由Allegro MicroSystems制造生產(chǎn)的A3909全半橋驅(qū)動器器件屬于電橋驅(qū)動器電源管理集成電路 (PMIC) 系列，包含兩個或多個功率晶體管，以及在外部器件控制下將其用作開關(guān)所需的電路。這些晶體管通常在內(nèi)部配置為成對串聯(lián)連接（稱為半橋），因而任意指定晶體管對之間的結(jié)點(diǎn)都可以連接至兩個電源軌中的任一個。這類器件常用于將控制器件（如微控制器）提供的低電平信號轉(zhuǎn)換為操作執(zhí)行器（如步進(jìn)電機(jī)或無刷電機(jī)）所需的較大功率信號。

Description

The A3909 is a dual full bridge motor driver, designed for 12 V medium power applications. The outputs are rated for operation through a power supply range of 4 to 18 V, and capable of up to 1 A per phase.

Paralleling the outputs is possible for higher amperage single DC motor applications.

The four inputs (IN1 to IN4) can control DC motors in forward, reverse, brake, and coast modes, or a bipolar stepper motor in full- and half-step modes.

The A3909 is supplied in a 10-pin MSOP package with exposed thermal pad (suffix LY) and a 10-pin SSOP (suffix LN) for wave solder applications. Both packages are lead (Pb) free with 100 matte-tin leadframe plating.

Features and Benefits

? Low RDS(on) outputs

? Drives two DC motors or single stepper motor

? Low power standby (Sleep) mode with zero current drain

? Thermal shutdown protection

? Parallel operation option for 1.8 A, single DC motor

? Overcurrent protection:

? Output to supply short

? Output to GND short

? Output load short