MAX5924
Info: : PRODUCTION
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MAX5924

1V to 13.2V, n-Channel Hot-Swap Controllers Require No Sense Resistor

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Models 6
1ku List Price Starting From $2.62
Features
  • Hot Swap 1V to 13.2V with VCC > 2.25V
  • Drive High-Side n-Channel MOSFET
  • Operation With or Without RSENSE
  • Temperature-Compensated RDS(ON) Sensing
  • Protected During Turn-On into Shorted Load
  • Adjustable Circuit-Breaker Threshold
  • Programmable Slew-Rate Control
  • Programmable Turn-On Voltage
  • Autoretry or Latched Fault Management
  • 10-Pin µMAX® or 16-Pin QSOP Packages
Additional Details
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The MAX5924/MAX5925/MAX5926 1V to 13.2V hot-swap controllers allow the safe insertion and removal of circuit cards into live backplanes. These devices hot swap supplies ranging from 1V to 13.2V provided that the device supply voltage, VCC, is at or above 2.25V and the hot-swapped supply, VS, does not exceed VCC.

The MAX5924/MAX5925/MAX5926 hot-swap controllers limit the inrush current to the load and provide a circuit-breaker function for overcurrent protection. The devices operate with or without a sense resistor. When operating without a sense resistor, load-probing circuitry ensures a short circuit is not present during startup, then gradually turns on the external MOSFET. After the load probing is complete, on-chip comparators provide overcurrent protection by monitoring the voltage drop across the external MOSFET on-resistance. In the event of a fault condition, the load is disconnected.

The devises include many integrated features that reduce component count and design time, including configurable turn-on voltage, slew rate, and circuit-breaker threshold. An on-board charge pump provides the gate drive for a low-cost, external n-channel MOSFET.

The MAX5924/MAX5925/MAX5926 are available with open-drain PGOOD and/or active-low PGOOD outputs. The MAX5925/MAX5926 also feature a circuit breaker with temperature-compensated RDS(ON) sensing. The MAX5926 features a selectable 0ppm/°C or 3300ppm/°C temperature coefficient. The MAX5924 temperature coefficient is 0ppm/°C and the MAX5925 temperature coefficient is 3300ppm/°C. Autoretry and latched fault-management configurations are available (see the Selector Guide in the full data sheet).

Applications

  • Base Stations
  • Network Routers and Switches
  • Portable Device Bays
  • RAID
  • Remote-Access Servers
  • Servers
Part Models 6
1ku List Price Starting From $2.62

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Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX5924AEUB+
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MAX5924AEUB+T
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MAX5924BEUB+
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MAX5924BEUB+T
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MAX5924DEUB+
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MAX5924DEUB+T
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Software & Part Ecosystem

Evaluation Kits 1

MAX5926EVKIT

Evaluation Kit for the MAX5926

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MAX5926EVKIT

Evaluation Kit for the MAX5926

Evaluation Kit for the MAX5926

Features and Benefits

  • VS Voltage Range: 1V to VCC
  • VCC Voltage Range: 2.25V to 13.2V
  • No RSENSE Required
  • Tracks RDS(ON) Over Temperature
  • Latch Mode
  • Adjustable Slew Rate
  • Short-Circuit Detection
  • Power-Good Output

Product Detail

The MAX5926 evaluation kit (EV kit) is designed to evaluate the MAX5926 hot-swap controller. The hot-swapped supply (VS) has a range of 1V to 13.2V provided that the device supply (VCC) is at or above 2.25V and VS does not exceed VCC.

The current-trip setting is approximately 6A for a full load 5A system. The actual current-trip setting is dependent on temperature as well as the tolerances of RCB, RCBF, ICB, VCB_OS, and RDS(ON).

The MAX5926 EV kit was conveniently designed with jumpers to activate the enables (EN1, active-low EN2), fault management (LATCH), temperature coefficient tracking (TC), adjustable output slew rate (SLEW), and power-up short-circuit detection (SC_DET).

Applications

  • Base Stations
  • Network Routers and Switches
  • Portable Device Bays
  • RAID
  • Remote-Access Servers
  • Servers

Tools & Simulations 1

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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