LT4356IDE-2#PBF

LT4356IDE-2#PBF is the Pb-free (Pb-Free) IDE-2 package version of Linear Technology/Analog Devices’ LT4356 hot‑swap controller. It’s used to safely insert a board into a live power rail by limiting inrush and protecting against faults.
What it does:
- Drives an external N‑channel MOSFET as the pass element
- Provides soft-start to limit inrush current
- Implements current‑limit and overcurrent/short‑circuit protection
- Uses sense components (sense resistor, compensation network) to set limits and timing
How it’s used:
- VIN connects to the supply, VOUT feeds the load through the external MOSFET
- A sense resistor sets the current limit; external caps/ resistors set soft-start and fault behavior
- Provides fault latch/retry behavior per the datasheet
Packaging suffix:
- #PBF denotes Pb‑free packaging
- IDE‑2 refers to the specific package type
Typical applications:
- Inrush protection for servers, telecom equipment, storage, and automotive power rails
In short: LT4356IDE-2#PBF is the Pb-free version of the LT4356 hot‑swap controller in IDE‑2, used to safely limit inrush and protect a live power path with an external MOSFET.

Here are the typical features of the LT4356IDE-2#PBF:
- Dual hot-swap/OR-ing controllers: two independent channels for dual supplies.
- External N-channel MOSFET gate drives for hot-swapping and ideal-diode behavior.
- Programmable/current-limit per channel via sense resistor; protects against shorts.
- Slew-rate soft-start to curb inrush and minimize voltage droop.
- Overcurrent/short-circuit protection on each channel.
- Input undervoltage lockout and overvoltage protection.
- Reverse-polarity and reverse-current protection inherent to the MOSFET path.
- Fault reporting: per-channel fault outputs (open-drain) for monitoring (and latch options in some configurations).
- Enable/disable control and robust protection for power-path integrity.
- Pb-free (PBF) package: IDE-2.
Note: Exact pinouts and programmable options are specified in the datasheet; refer to LT4356IDE-2#PBF for detailed electrical characteristics and recommended application circuits.

LT4356IDE-2#PBF uses the IDE-2 Pb‑Free package, which is a 16‑lead MSOP (Mini Small Outline Package) style package.

Pin count: 16 pins (in the IDE-2 package variant).
Function: Dual high-side surge stopper/ORing controller; provides two independent, current-limited power switches with reverse-current protection for power-path protection and input OR-ing.

Analog Devices, Inc. The LT4356IDE-2#PBF is from Linear Technology originally, which was acquired by Analog Devices in 2017. Analog Devices is a multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits.

LT4356IDE-2#PBF is a hot-swap and ideal-diode controller with current limit and fault protection. Applications include:
- High-side protection and inrush control for power rails
- Power-path management and OR-ing of redundant supplies
- Safe insertion/removal of boards in servers, telecom and data centers
- Automotive and industrial power rails
- Battery backup interfaces and energy-storage systems
- Any design needing controlled startup and reverse-blocking