A4950引脚图和管脚功能定义如下：
A4950内部结构框图：
A4950数据手册
Description
Designed for pulse width modulated (PWM) control of DC
motors, the A4950 is capable of peak output currents to ±3.5 A
and operating voltages to 40 V.
Input terminals are provided for use in controlling the speed and
direction of a DC motor with externally applied PWM control
signals. Internal synchronous rectification control circuitry is
provided to lower power dissipation during PWM operation.
Internal circuit protection includes overcurrent protection,
motor lead short to ground or supply, thermal shutdown with
hysteresis, undervoltage monitoring of VBB, and crossover-
current protection.
For high ambient operating temperature applications, an
automotive grade device is offered (A4950K). The K grade
device is tested across extended temperature and voltage
ranges to ensure compliance in automotive or industrial
applications.
The A4950 is provided in a low-profile 8-pin SOICN package
with exposed thermal pad (suffix LJ) that is lead (Pb) free, with
100% matte tin leadframe plating.
完整的pdf格式文档51黑下载地址：
a4950-datasheet.pdf
(225.81 KB, 下载次数: 111)
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