LTC4416
LTC4416-1

RECOMMENDED FOR NEW DESIGNS

36V, Low Loss Dual PowerPath Controllers for Large PFETs

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Overview

  • Designed Specifically to Drive Large and Small QG PFETs
  • Very Low Loss Replacement for Power Supply OR’ing Diodes
  • Wide Operating Voltage Range: 3.6V to 36V
  • –40°C to 125°C Operating Temperature Range
  • Reverse Battery Protection
  • Automatic Switching Between DC Sources
  • Low Quiescent Current: 35μA per Channel
  • Load Current Sharing
  • MOSFET Gate Protection Clamp
  • Precision Input Control Comparators for Setting Switchover Threshold Points
  • Open-Drain Feedback Points for Customer Specified Hysteresis Control
  • Minimal External Components
  • Space Saving 10-Lead MSOP Package

The LTC4416/LTC4416-1 control two sets of external P-channel MOSFETs to create two near ideal diode functions for power switchover circuits. This permits highly efficient OR’ing of multiple power sources for extended battery life and low self heating. When conducting, the voltage drop across the MOSFET is typically 25mV. For applications with a wall adapter or other auxiliary power source, the load is automatically disconnected from the battery when the auxiliary source is connected.

The LTC4416 integrates two interconnected PowerPath controllers with soft switchover control. The “soft-off” switchover permits the users to transfer between two dissimilar voltages without excessive voltage undershoot (or VDROOP) in the output supply. The LTC4416/LTC4416-1 also contain a “fast-on” feature that dramatically increases gate drive current when the forward input voltage exceeds 25mV. The LTC4416 “fast off” feature is engaged when the sense voltage exceeds the input voltage by 25mV. The LTC4416-1 enables the fast off under the same conditions and when the other external P-channel device is selected using the enable pins.

The wide operating supply range supports operation from one to eight Li-Ion cells in series. The low quiescent current (35μA per channel) is independent of the load current. The gate driver includes an internal voltage clamp for MOSFET protection.

The LTC4416/LTC4416-1 are available in low profile 10-lead MSOP packages.

Applications

  • High Current PowerPath Switch
  • Industrial and Automotive Applications
  • Uninterruptible Power Supplies
  • Logic Controlled Power Switch
  • Battery Backup System
  • Emergency Systems with Battery Backups

LTC4416
LTC4416-1
36V, Low Loss Dual PowerPath Controllers for Large PFETs
Automatic PowerPath Switchover LTC4416 vs Schottky Diode  Forward Voltage Drop Product Package 1 Under and Overvoltage Shutdown Operation
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Documentation

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Circuit Monitors 1
LTC2960 RECOMMENDED FOR NEW DESIGNS 36V Nano-Current Two-Input Voltage Monitor
Protection Switches & Controllers 4
LTC2955 RECOMMENDED FOR NEW DESIGNS Pushbutton On/Off Controller with Automatic Turn-On
LTC4417 RECOMMENDED FOR NEW DESIGNS Prioritized PowerPath Controller
LTC4353 RECOMMENDED FOR NEW DESIGNS Dual Low Voltage Ideal Diode Controller
LTC4355 RECOMMENDED FOR NEW DESIGNS Positive High Voltage Ideal Diode-OR with Input Supply and Fuse Monitors
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Tools & Simulations

LTspice 1


Models for the following parts are available in LTspice:

  • LTC4416
  • LTC4416-1
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Evaluation Kits

eval board
DC1059A

LTC4416EMS Demo Board | Dual PowerPath Controller

Product Details

DC1059A: Demo Board for the LTC4416 36V, Low Loss Dual PowerPath Controllers for Large PFETs.

DC1059A
LTC4416EMS Demo Board | Dual PowerPath Controller
DC1059A Demo Board DC1059A Demo Board DC1059A Demo Board DC1059A Demo Board DC1059A Demo Board DC1059A - Schematic

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