LTC4364IDE-2#TRPBF

LTC4364IDE-2#TRPBF is a high‑side surge stopper/hot‑swap protection IC from Analog Devices (Linear Technology) that drives an external N‑channel MOSFET to protect downstream circuitry from input surges, faults, and reverse polarity. It creates an “ideal diode” / controlled on path with inrush current limiting and rapid fault response.
Key points:
- Protects automotive/industrial rails (typical range up to 60V).
- Features adjustable current limit (via ILIM), soft‑start to limit inrush, and fast shutoff on faults.
- Provides reverse-battery protection, overvoltage/undervoltage protection, and fault/status monitoring.
- Designed for use with an external MOSFET to handle load currents while the IC concentrates protection logic.
- Applications include 12/24V automotive, telecom, and power‑entry protection for sensitive electronics.
Package note:
- IDE denotes the device package variant; -TRPBF indicates Tape & Reel, Pb‑free packaging.
For exact electrical specs, pinout, and application circuitry, refer to the LTC4364 data sheet.

Here are the key features of LTC4364IDE-2#TRPBF (surge stopper/reverse-battery controller):
- External N-channel MOSFET as the pass element for high current hot-swap protection
- Wide input voltage range with automotive-grade transients (surge/overvoltage protection)
- Reverse-polarity protection to guard the load
- Adjustable current limit via sense resistor for precise inrush control
- Soft-start to minimize input inrush when connecting a load
- Short-circuit protection with fast reaction (fault/hiccup/auto-retry behavior)
- Reverse-current protection to prevent discharge back into the source
- Undervoltage lockout and overvoltage protection for robust operation
- Fault/Status output for MCU monitoring and control
- Thermal protection to safeguard device under high dissipation
- No external regulator required; self-powered from the input
- Pb-free, RoHS-compliant package suitable for compact designs
Applications include automotive/hot-swap protection, battery-powered systems, telecom, industrial DC buses. For exact electrical values (voltage ranges, current-limit range, timing), refer to the datasheet.

8-lead MSOP (MSOP-8) package, about 3×3 mm. The TRPBF suffix means Tape‑and‑Reel, Pb‑free (lead‑free).

- Pin count: 8 pins (8-pin package)
- Function: High-side surge stopper controller that drives back-to-back MOSFETs to provide reverse-polarity protection, hot-swap/current-limit protection, and over/under-voltage protection for a power input.

Analog Devices, Inc. (ADI). ADI is a multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing integrated circuits. It acquired Linear Technology in 2017, continuing the LTC product line (LTC4364, etc.).

Typical applications for LTC4364IDE-2 include:
- Automotive power rails (12V/24V) for surge/load-dump and reverse-polarity protection
- Downstream-load protection for ECUs, sensors, and DC-DC converters
- Inrush-current control and startup sequencing for power supplies
- Protection of battery-powered/portable devices from surges and overcurrent
- Rugged telecom/industrial DC rails requiring transient protection