The A3944 is a programmable 6-channel low-end MOSFET pre-driver ideal for automotive applications. Each channel can be controlled via parallel and serial inputs, providing ample gate drive current to allow PWM to control frequencies up to 10 kHz (depending on the MOSFET gate charge).
Each channel can provide independent fault diagnosis for ground short circuit and open circuit when it is "off", and battery short circuit fault diagnosis when it is "powered on". A short circuit in the battery may disable the output until the battery is reset or reprogrammed. Each channel provides independent programming fault thresholds and masking times.
In addition to channel state control, channel fault masking, fault thresholds, and fault timers can also be programmed via an SPI-compatible serial interface. Serial interfaces also provide fault status return information for each channel.
The digital inputs and outputs are compatible with 3.3 and 5 V voltages.
The A3944 is available in a 28-pin TSSOP package (suffix LP) with an exposed thermal panel. The package is lead-free and features a 100% matte tin-plated pinframe.
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汽车 ECU
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汽车高端促动器
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6 通道
驱动逻辑水平 N 通道 MOSFET
50 mA 栅极驱动电流
短路和开路检测
高压 (50 V) 漏极反馈输入端
每通道可编程故障计时器和阈值
欠压锁定 (UVLO) 和热警告电路
串行或并行栅极驱动控制
高度可配置性（通过 SPI 兼容接口）
紧凑的 TSSOP 封装