LTC4373CDD#PBF

LTC4373 is a positive high voltage, low quiescent current ideal diode controller that drive an external N-channel MOSFET to replace a schottky diode. It controls forward voltage drop across the MOSFET to ensure current delivery or current transfer from one path to other even at light loads. A 5µA operating current achieves high efficiency for intermittent load applications or always-on backup power supplies. If a power source fails or is shorted, a fast turnoff minimizes reverse current transients. LTC4373 control back-to-back N-channel MOSFETs for inrush current control and load switching. It has a UV pin for undervoltage monitoring while active-low UVOUT pin provides hysteresis adjustment and status information. During undervoltage, back-to-back MOSFETs are cut off and quiescent current reduces to 0.5μA. Applications include automotive battery protection, redundant power supplies, portable instrumentation, solar powered systems, energy harvesting applications and supply holdup.

• Reduces power dissipation by replacing a power schottky diode
• Wide operating voltage range from 2.5V to 80V
• Reverse supply protection to -28V
• No TVS input clamps required
• High side external N-channel MOSFET drive
• Shutdown input for ON/OFF control
• Fast reverse current turn-off within 1.5µs
• 8-lead plastic DFN package
• Temperature range from 0°C to 70°C

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