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The LTC4229IG is a power management chip introduced by Analog Devices (ADI) to provide ideal diodes and hot-swappable functionality ‌. The LTC4229IG saves power and circuit board area by controlling two external N-channel MOSFETs to provide ideal diodes and hot-swappable functions for the power rail. The LTC4229IG has the following main features:

Ideal diodes for redundant power supplies and surge current control

Low-loss alternatives to power Schottky diodes

It can protect the output voltage from the influence of input undervoltage

Hot-swapping operations are allowed to be safely performed on the live backplane

Operating range: 2.9V to 18V

Controllable back-to-back N-channel MOSFETs

The peak fault current can be limited within a time of ≤1μs

Adjustable current limit value with return

Adjustable start-up and current-limiting fault delay

The ideal diode on-off time of 0.5μs

Under-voltage and over-voltage protection

Status, faults and good power output

After a failure occurs, perform a locking or automatic retry operation (which can be selected through pins).

16-pin SSOP package

Application field

The LTC4229IG is suitable for a variety of applications, including redundant power supply, power preservation, high availability systems and servers, telecommunications and network infrastructure, etc., especially in systems that require high reliability and low power ‌.

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