MAX5944

RECOMMENDED FOR NEW DESIGNS

Dual FireWire Current Limiter and Low-Drop ORing Switch Controller

Data Sheet (Rev. 2) Product Selection Table
Part Models
2
1ku List Price
Starting From $4.42
Viewing:

Part Details

  • Provides Safe Hot-Swap for 7.5V to 37V Power Supplies
  • Dual-Channel Hot-Swap
  • Low-Drop Power ORing with Ultra-Fast Turn-Off
  • Active Current Limit
  • ±5% Current-Limit Sensing Accuracy
  • 2ms Current-Limit Timeout
  • Fast Current-Limit Response to Output Short-Circuit Conditions
  • Drives External n-Channel Power MOSFETs
  • Independent Overcurrent Fault Status Outputs
  • 259ms Autoretry Period
  • 10µA (Per Channel) Shutdown Current
  • Independent ON/OFF Control Allows Undervoltage Lockout Programming
  • Fast Load Disconnect Control Through ON/OFF Inputs
  • Bidirectional Load Disconnect
  • Power Routing from One Port to Another
MAX5944
Dual FireWire Current Limiter and Low-Drop ORing Switch Controller
MAX5944: Typical Operating Circuit
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

Reliability Data 1

Design Note 1

Technical Articles 2

Learn More
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Hardware Ecosystem

Parts Product Life Cycle Description
FireWire (IEEE 1394) Controllers 1
MAX5943
PRODUCTION FireWire Current Limiter and Low-Drop ORing Switch Controller
High Voltage Hot Swap Controllers 1
MAX5902
PRODUCTION +72V SOT23/TDFN Simple Swapper Hot-Swap Controllers
Low Voltage Hot Swap Controllers 1
MAX4271
PRODUCTION 3V to 12V, Current-Limiting, Hot Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection
Modal heading
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Evaluation Kits

MAX5944EVKIT

Evaluation Kit for the MAX5944

Buy Now View Details

Features and Benefits

  • Safely Hot-Swaps 7.5V to 37V FireWire Power Supplies
  • Demonstrates Two-Channel Hot-Swap
  • Current Limit Configured for 1.6A per Channel
  • Low-Voltage-Drop Power ORing
  • Demonstrates Active Current-Limit Feature
  • Programmable Load Current Limit
  • 2ms Regulated Current-Limit Timeout
  • Autoretry Fault Management
  • Configurable Undervoltage Lockout
  • Overcurrent Active-Low FAULTA and Active-Low FAULTB Output Status Indicators
  • Surface-Mount Construction
  • Fully Assembled and Tested

Product Details

The MAX5944 evaluation kit (EV kit) circuit demonstrates the multiple functions of the MAX5944 IC. The MAX5944 IC is a two-channel controller that performs hot-swapping, power-supply ORing, and current-limiting functions for FireWire® applications. The MAX5944 controls n-channel MOSFETs to regulate load current from two input power supplies and performs low-voltage-drop power-supply ORing. The output current limit and input undervoltage-lockout thresholds are configurable.

The MAX5944 EV kit is intended for 7.5V to 37V FireWire power-supply applications. The current-limit threshold is configured to 1.6A per channel. Shutdown mode can be controlled with an on-board jumper. A fault output for each channel is provided for circuit monitoring.

Applications

  • FireWire® Desktop/Notebook Port
  • FireWire® Hub
  • FireWire® Peripheral Device Current Limit
  • Hot Swap
MAX5944EVKIT
Evaluation Kit for the MAX5944

Latest Discussions

No discussions on max5944 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed