MingLiU","serif"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-bidi-font-family: PMingLiU; mso-font-kerning: 0pt; mso-fareast-language: ZH-CN;">Allegro推出一款全新低MingLiU","serif"; mso-bidi-font-size: 12.0pt; mso-bidi-font-family: PMingLiU; mso-font-kerning: 0pt;">电压、双向直流MingLiU","serif"; mso-bidi-font-size: 12.0pt; mso-bidi-font-family: PMingLiU; mso-font-kerning: 0pt;">马达驱动器MingLiU","serif"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-bidi-font-family: PMingLiU; mso-font-kerning: 0pt; mso-fareast-language: ZH-CN;">A3908，其典型输入电压范围为MingLiU","serif"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-bidi-font-family: PMingLiU; mso-font-kerning: 0pt; mso-fareast-language: ZH-CN;">3.0V至MingLiU","serif"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-bidi-font-family: PMingLiU; mso-font-kerning: 0pt; mso-fareast-language: ZH-CN;">5.5V，而输出电流高达MingLiU","serif"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-bidi-font-family: PMingLiU; mso-font-kerning: 0pt; mso-fareast-language: ZH-CN;">500mA。独特的全桥式输出整合源端线性作业，可确保马达线圈的恒定电压供应。MingLiU","serif"; mso-bidi-font-size: 12.0pt; mso-bidi-font-family: PMingLiU; mso-font-kerning: 0pt; mso-fareast-language: ZH-CN;">

MingLiU","serif"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-bidi-font-family: PMingLiU; mso-font-kerning: 0pt; mso-fareast-language: ZH-CN;">A3908的稳压输出可大幅减少因MingLiU","serif"; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-bidi-font-family: PMingLiU; mso-font-kerning: 0pt; mso-fareast-language: ZH-CN;">I*Rds(on)变化及电池电压公差导致的马达电压变化。Allegro的全新马达驱动器主要针对便携设备及仪器市场。

两个逻辑输入可控制马达的旋转方向、致动及待机(<500nA电源电流)模式，并可允许使用灌电流驱动器的可选PWM。内部保护电路包括过热关机、欠压锁定及交叉(击穿)保护。

Allegro的A3908采用2.0mm ?2.0mm ?0.575mm(标称高度)、8接脚DFN封装，具有外露热传导垫片。该小型封装为无铅产品，且接脚框采用100%雾锡电镀。