A4987SESTR-T集成電路（IC）的電機(jī)驅(qū)動器控制器規(guī)格書PDF中文資料

A4987SESTR-T屬于集成電路（IC）的電機(jī)驅(qū)動器控制器。由Allegro MicroSystems制造生產(chǎn)的A4987SESTR-T電機(jī)驅(qū)動器，控制器產(chǎn)品屬于電機(jī)驅(qū)動器和控制器電源管理集成電路 (PMIC) 系列，可用于控制或操作從某電源施加到電機(jī)或相關(guān)機(jī)電執(zhí)行器的電源。所實現(xiàn)的具體功能和特性集根據(jù)預(yù)期負(fù)載和預(yù)期應(yīng)用的特性有很大差異，范圍從用于有刷電機(jī)的簡單開環(huán)速度控制到基于步進(jìn)電機(jī)的高級閉環(huán)運動控制。

Description

The A4987 is a dual DMOS full-bridge stepper motor driver with parallel input communication and overcurrent protection. Each full-bridge output is rated up to 35 V and ±1 A. The A4987 includes fixed off-time pulse width modulation (PWM) current regulators, along with 2- bit nonlinear DACs (digital-to-analog converters) that allow stepper motors to be controlled in full, half, and quarter steps.

Features and Benefits

?Low RDS(ON)outputs

? Internal mixed current decay mode

? Synchronous rectification for low power dissipation

? Internal UVLO

? Crossover-current protection

? 3.3 and 5 V compatible logic supply

? Thin profile QFN and TSSOP packages

? Thermal shutdown circuitry

? Short-to-ground protection

? Shorted load protection

? Low current Sleep mode,