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Mingjiada Electronics Supply ADI LT4356-1 And LT4356-2 Series Surge Stopper IC

In automotive electronics, industrial control, telecommunications power supplies and hot-swap systems, load dump, surges, overvoltage and overcurrent are common risks that can cause damage to downstream circuits. Traditional TVS or fuse solutions have limitations in terms of sustained overvoltage protection, current limiting and recoverability. Mingjiada Electronics has long supplied ADI’s LT4356-1 / LT4356-2 surge suppressors, providing customers with active overvoltage and overcurrent protection solutions to help enhance system reliability and safety.

The LT4356-1 / LT4356-2 are part of ADI’s ‘Surge Stopper’ series of surge suppressors and are active overvoltage/overcurrent protection controllers. The LT4356 surge suppressor protects the load from the effects of high-voltage transients. During overvoltage events (such as sudden load drops in automotive applications), it regulates the output by controlling an external N-channel MOSFET. The output is limited to a safe level, thereby allowing the load to continue operating normally. The LT4356 also monitors the voltage drop between the VCC and SNS pins to prevent overcurrent faults. An internal amplifier limits the current sense voltage to 50 mV.

Key differences between the LT4356-1 and LT4356-2:
LT4356-1: Enters a locked-out state following an overcurrent or overvoltage fault timeout, requiring a reset or power cycle to recover.
LT4356-2: Automatically retries following an overcurrent or overvoltage fault timeout, making it suitable for applications requiring self-recovery capability.
Both devices are essentially identical in terms of core protection functions, packaging and pin configuration; the choice between them depends primarily on the system’s requirements regarding post-fault recovery behaviour.

Key Features:
Prevents high-voltage surges
Adjustable output clamping voltage
Overcurrent protection
Wide operating range: 4 V to 80 V
Reverse input protection up to –60 V
Low shutdown current of 7 µA (LT4356-1)
Suitable as an auxiliary amplifier for level-detection comparators or linear regulator controllers (LT4356-2)
Adjustable fault timer
Controls N-channel MOSFETs
Shutdown pin withstands voltages from –60 V to 100 V
Fault output indication
Guaranteed operating temperature of 125°C
Available in (4 mm × 3 mm) 12-pin DFN, 10-pin MSOP or 16-pin SO packages

Mingjiada Electronics supplies the [ADI] LT4356 series of surge suppressors, including but not limited to:
LT4356CDE-1
LT4356CDE-2
LT4356CMS-1
LT4356CS-1
LT4356CS-2
LT4356HDE-1
LT4356HDE-2
LT4356HMS-1
LT4356HS-1
LT4356HS-2
LT4356IDE-1
LT4356IDE-2
LT4356IMS-1
LT4356IS-1
LT4356IS-2
The LT4356 series is suitable for applications such as surge protection in automotive and avionics equipment, hot-swap and live insertion, and high-side switches in battery-powered systems.

Mingjiada Electronics is a long-standing supplier of ADI LT4356-1 / LT4356-2 surge suppressors and related models. For further product details or to enquire about sample prices, please visit the Mingjiada Electronics website (https://www.integrated-ic.com/) for more information on our product range.