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.

Features and Benefits

? Low RDS(on) outputs

? Overcurrent protection (OCP)

? Motor short protection

? Motor lead short to ground protection

? Motor lead short to battery protection

? Low Power Standby mode

? Adjustable PWM current limit

? Synchronous rectification

? Internal undervoltage lockout (UVLO)

? Crossover-current protection

? Commercial temperature grade (A4950E: –40°C to 85°C )

? Automotive temperature grade (A4950K: –40°C to 125°C)

A4950KLJTR-T屬于集成電路（IC） > 電機驅(qū)動器，控制器。Allegro MicroSystems制造生產(chǎn)的A4950KLJTR-T電機驅(qū)動器，控制器產(chǎn)品屬于電機驅(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或相關(guān)機電執(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的簡單開環(huán)速度控制到基于步進電機的高級閉環(huán)運動控制。