MAX5943AEEE+

The MAX5943AEEE+ is a FireWire current limiter and low-drop ORing switch controller in 16 pin QSOP package. This device controls two external power n-channel MOSFETs to regulate current from the input power supply to the load and performs low voltage-drop, power-supply ORing. The MAX5943 FireWire/IEEE 1394 protective circuit is UL recognized. The MAX5943 allows the safe insertion and removal of FireWire peripherals into a live FireWire port by providing inrush current control and an output current-limiting function. The ORing feature provides a very efficient way to protect the FireWire port when connected to another FireWire peripheral that sources a higher voltage. By turning off both external MOSFETS, the MAX5943 provides a true bidirectional load disconnect. A low-current shutdown mode disables the MAX5943, resulting in less than 10μA supply current. A pin-selectable input allows latched or autoretry fault management after a fault.

• Supply voltage range is 7.5V to 37V
• Operating temperature range from -40°C to 85°C
• Low drop power ORing with ultra-fast turn-off
• ±5% current limit sensing accuracy
• Provides inrush and output current limit
• ON/OFF control allows undervoltage lockout programming
• Programmable active current limit
• Fast current-limit response to output short circuit conditions

注意

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party