A1448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

A1448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A1448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(shí)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(yùn)動控制。

Description

The A1448 is a full-bridge motor driver designed to drive low-voltage, brushless DC motors. The device is designed to allow the user to control several functions with a single input control pin. The pin allows for direct input PWM for speed control, is used to initiate the active braking function to reduce motor stop time, and acts as an enable pin to engage micro-power sleep mode to reduce average power consumption when not in use. The A1448 is designed for use in vibration motor applications in portable devices that require fast stop-start cycles, such as haptic applications and vibration ring tones.

Features and Benefits

?Low-voltage operation, 1.8 to 4.2 V

?Multifunction CONTROL pin input:

?Direct input PWM for speed control

?Active braking for fast stop cycle

?Sleep function to reduce average power consumption

?Reverse voltage protection on VDD and CONTROL pins

?Output thermal shutdown protection for robust performance

?Soft switching algorithm to reduce audible switching noise and EMI

?Hall chopper stabilization technique for precise signal response over operating range

?Antistall feature guarantees continuous rotation and prevents overheating

?Single-chip solution for high reliability

?Miniature MLP/DFN package with industry-leading 0.40 mm maximum overall thickness