LTC4416EMS#PBF

LTC4416EMS#PBF is Linear Technology’s (now Analog Devices) dual power-path controller that provides automatic, efficient OR-ing of two input supplies to a single load with reverse-current protection. The EMS suffix denotes a specific Pb-free package variant for the device.
Key ideas
- Automatically selects the higher source and blocks reverse current into the other source.
- Requires two external N-channel MOSFETs to form the dual ideal-diode paths.
- Provides fast, low-loss power switching with protection features (e.g., overcurrent/short-circuit behavior, fault protection) to protect sources and load.
- Improves efficiency versus simple diode OR-ing by minimizing voltage drop.
Typical uses
- Redundant or backup power supplies, telecom/data-center power paths.
- Battery back-up, automotive, and solar/battery systems where seamless source switching is desired.
How to use
- Connect two input sources to VIN1 and VIN2 via two MOSFETs, and connect the MOSFET outputs to VOUT (load).
- The LTC4416 drives the MOSFETs to realize the ideal-diode paths and protect against reverse flow.
- For exact pinout, electrical specs, and layout guidelines, consult the LTC4416 data sheet for the EMS package and Pb-free variant.

LTC4416EMS#PBF features (concise):
- Dual-input power-path controller using two external MOSFETs for automatic, low-drop ideal-diode ORing to a common load
- Auto-switching to the higher-voltage source with seamless handoff (no external control signals)
- Reverse-current and reverse-battery protection; prevents backfeeding
- Independent current-limit/short-circuit protection on each channel
- Overvoltage/undervoltage protection and thermal protection with latch/hiccup behavior
- Hot-swap capable; high efficiency with minimal voltage drop
- Wide input range suitable for automotive, battery, and other low- to high-voltage applications
- Small 8-pin MSOP Pb-free package (EMS#PBF suffix)
Note: All features are intended for autonomous duty without external sense/control signals.

LTC4416EMS#PBF uses an 8‑lead MSOP (Molded Small Outline Package), Pb‑free.

- Pin count: 10 pins (MSOP-10 package, EMS code)
- Function: Dual PowerPath/ideal-diode controller that drives two external N-channel MOSFETs to provide reverse-current protection and automatic supply-ORing between two input sources, with current-limit protection.

- Manufacturer: Analog Devices, Inc. (the LTC family originated from Linear Technology; LTC4416 is part of that line and Linear Technology was acquired by Analog Devices in 2017).
- Company type: An American multinational semiconductor company specializing in analog, mixed-signal, and power-management integrated circuits.

Application areas of LTC4416EMS#PBF:
- Two-input power-path control for ideal-diode OR-ing of dual DC sources with reverse-current protection
- Redundant/backup power systems (UPS, telecom)
- Hot-swap and seamless switchover in servers and data centers
- Automotive 12V power-path switching
- Solar/battery–derived bus isolation
- Any system needing fault-tolerant, low-loss power routing between two supplies