LTC4229IUFD#PBF

LTC4229 is an ideal diode and Hot Swap™ controller. It offers ideal diode and Hot Swap™ functions for a power rail by controlling two external N-channel MOSFETs. The MOSFET acting as an ideal diode replaces a high power schottky diode and the associated heat sink, saving power and board area. The Hot Swap MOSFET control allows a board to be safely inserted and removed from a live backplane by limiting inrush current. The supply output is also protected against short-circuit faults with a fast acting foldback current limit and electronic circuit breaker. It regulates the forward voltage drop across the external MOSFET to ensure smooth current transfer in diode-OR applications. The ideal diode turns on quickly to reduce the load voltage droop during supply switchover. It is used in application such as redundant power supplies, supply holdup, high availability systems and servers, telecom and network infrastructure, power prioritizer etc.

• Ideal diode and inrush current control for redundant supplies
• Protects output voltage from input brownouts
• Operating voltage range is 2.9V to 18V
• Controls back-to-back N-channel MOSFETs
• Limits peak fault current in 1µs
• Adjustable current limit with foldback, adjustable start-up and current limit fault delay
• Undervoltage and overvoltage protection
• Status, fault and power good outputs, pin selectable latch off or automatic retry after fault
• 0.5µs ideal diode turn-on and turn-off time
• Operating ambient temperature is -40°C to 85°C, package style is 24-lead plastic QFN

Notes

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