L293B中文资料推挽四通道驱动器数据手册ST规格书

描述 Description

The L293B and L293E are quad push-pull drivers capable of delivering output currents to 1A per channel. Each channel is controlled by a TTL-compatible logic input and each pair of drivers (a full bridge) is equipped with an inhibit input which turns off all four transistors. A separate supply input is provided for the logic so that it may be run off a lower voltage to reduce dissipation.

Additionally, the L293E has external connection of sensing resistors, for switchmode control.

The L293B and L293E are package in 16 and 20-pin plastic DIPs respectively ; both use the four center pins to conduct heat to the printed circuit board.

特性 Features

• OVERTEMPERATURE PROTECTION
• OUTPUT CURRENT 1A PER CHANNEL
• INHIBIT FACILITY
• PEAK OUTPUT CURRENT 2A PER CHANNEL (non repetitive)
• SEPARATE LOGIC SUPPLY
• HIGH NOISE IMMUNITY

简介

L293B属于集成电路（IC）的电机驱动器控制器。由制造生产的L293B电机驱动器，控制器产品属于电机驱动器和控制器电源管理集成电路 (PMIC) 系列，可用于控制或操作从某电源施加到电机或相关机电执行器的电源。所实现的具体功能和特性集根据预期负载和预期应用的特性有很大差异，范围从用于有刷电机的简单开环速度控制到基于步进电机的高级闭环运动控制。