MAX5943

PRODUCTION

FireWire Current Limiter and Low-Drop ORing Switch Controller

Industry's First IEEE 1394/FireWire-Compliant Hot-Swap Controllers

Data Sheet (Rev. 2) Product Selection Table
Part Models
3
1ku List Price
Starting From $2.57
Viewing:

Part Details

  • Provides Safe Hot Swap for 7.5V to 37V Power Supplies
  • UL-Recognized FireWire/IEEE 1394 Protective Circuit
  • Low-Drop Power ORing with Ultra-Fast Turn-Off
  • Programmable Active Current Limit (MAX5943A)
  • Programmable Circuit Breaker (MAX5943B–MAX5943E)
  • ±5% Current-Limit Sensing Accuracy
  • Programmable Current-Limit/Circuit-Breaker Timeout
  • Fast Current-Limit Response to Output Short-Circuit Conditions (MAX5943A)
  • Drives External n-Channel Power MOSFETs
  • Overcurrent Fault Status Output
  • Latched or Autoretry Overcurrent Fault Management
  • 10µA Shutdown Current
  • ON/OFF Control Allows Undervoltage Lockout Programming
  • Fast Load Disconnect Control Through ON Input
MAX5943
FireWire Current Limiter and Low-Drop ORing Switch Controller
MAX5943: 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

Technical Articles 3

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

Evaluation Kits

MAX5943AEVKIT

Evaluation Kit for the MAX5943A/B/C/D/E

Buy Now View Details

Features and Benefits

  • Safely Hot Swaps 7.5V to 37V Power Supplies
  • Low-Voltage-Drop Power ORing
  • Evaluates MAX5943A/B/C/D/E Controllers
  • Demonstrates Active-Current-Limit Feature
  • Programmable Output-Load Current Limit
  • Programmable Current-Limit Timer
  • Fast Current-Limit Response Time
  • Latch or Autoretry Fault Management
  • Programmable Undervoltage Lockout
  • Overcurrent Active-Low FAULT Status Indicator
  • Surface-Mount Construction
  • Fully Assembled and Tested

Product Details

The MAX5943A evaluation kit (EV kit) circuit demonstrates the hot-swap, current-limiting, and power-ORing functions of the MAX5943A. The MAX5943A EV kit is intended for 7.5V to 37V IEEE 1394™/FireWire® applications. The MAX5943A controls two n-channel MOSFETs to regulate load current from an input power supply and perform low-voltage-drop power-supply ORing. The MAX5943A EV kit can also be used to evaluate the MAX5943B/C/D/E versions (refer to the MAX5943 IC data sheet).

The MAX5943A EV kit features several jumpers to evaluate different configurations of the MAX5943A. The output current limit, current-limit timeout period, ORing threshold, and fault-management features are programmable. The undervoltage lockout threshold is configurable by installing external components. Shutdown mode can be controlled with an on-board switch or with an external logic signal. A active-low FAULT output signal is provided for fault condition monitoring.

Applications

  • FireWire® Desktop/Notebook Port
  • FireWire® Hub
  • FireWire® Peripheral Device Current Limit
  • Hot Swap
MAX5943AEVKIT
Evaluation Kit for the MAX5943A/B/C/D/E

Latest Discussions

No discussions on max5943 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed