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Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 348kB) Download   E-Mail

Description

The MAX5927A/MAX5929A–MAX5929D +1V to +15V quad hot-swap controllers provide complete protection for multisupply systems. They allow the safe insertion and removal of circuit cards into live backplanes. These devices hot swap multiple supplies ranging from +1V to +15V, provided one supply is at or above +2.7V. The input voltage rails (channels) can be configured to sequentially turn-on/off, track each other, or have completely independent operation. The discharged filter capacitors of the circuit card provide low impedance to the live backplane. High inrush currents from the backplane to the circuit card can burn up connectors and components, or momentarily collapse the backplane power supply leading to a system reset. The MAX5927A/MAX5929A–MAX5929D hot-swap controllers prevent such problems by gradually ramping up the output voltage and regulating the current to a preset limit when the board is plugged in, allowing the system to stabilize safely. After the startup cycle is complete, on-chip comparators provide VariableSpeed/BiLevel™ protection against shortcircuit and overcurrent faults, and provide immunity against system noise and load transients. The load is disconnected in the event of a fault condition. The MAX5929C/MAX5929D automatically restart after a fault condition, while the MAX5929A/MAX5929B must be unlatched. The MAX5927A fault management mode is selectable. The MAX5927A/MAX5929A–MAX5929D offer a variety of options to reduce external component count and design time. All devices integrate an on-board charge pump to drive the gates of low-cost external n-channel MOSFETs, an adjustable startup timer, and an adjustable current limit. The devices offer integrated features like startup current regulation and current glitch protection to eliminate external timing resistors and capacitors. The MAX5929B/MAX5929D provide an open-drain, active-low status output for each channel, the MAX5929A/MAX5929C provide an open-drain, active-high status output for each channel, and the MAX5927A status output polarity is selectable. The MAX5927A is available in a 32-pin thin QFN package and the MAX5929A–MAX5929D are available in a 24-pin QSOP package. All devices are specified over the -40°C to +85°C extended temperature range.

Key Features		Applications/Uses
Safe Hot Swap for +1V to +15V Power Supplies with Any Input Voltage (VIN_ ≥ 2.7V) Adjustable Circuit-Breaker/Current-Limit Threshold from 25mV to 100mV Configurable Tracking, Sequencing, or Independent Operation Modes VariableSpeed/BiLevel Circuit-Breaker Response Internal Charge Pumps Generate n-Channel MOSFET Gate Drives Inrush Current Regulated at Startup Autoretry or Latched Fault Management Programmable Undervoltage Lockout Status Outputs Indicate Fault/Safe Condition		Basestation Line Cards Bays (Docking Stations) Hot Plug-In Daughter Cards Network Switches, Routers, Hubs PCI Express® Hot Plug Portable Computer Device Power-Supply Sequencing/Tracking RAID

Diagram

Typical Operating Circuit

Application Notes

Application Note 4228: A Five-Channel (Three +V and Two -V) Hot-Swap Reference Design - MAX5927A

Design Guides

Power Solutions for Enterprise Management (PDF)

Reliability Reports

Show FIT data for: MAX5927A MAX5929A MAX5929B MAX5929C MAX5929D Request Reliability Report for: MAX5927A MAX5929A MAX5929B MAX5929C MAX5929D

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-18 of 18

MAX5927A	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5927AETJ+			Active	TQFN;32 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5927AETJ+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5929A	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5929AHEEG+			Active	QSOP;24 pin;54 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0172 (PDF) Use pkgcode/variation: E24+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5929AHEEG+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5929AEEG+			Active	QSOP;24 pin;54 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0172 (PDF) Use pkgcode/variation: E24+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5929AEEG+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5929AHEEG			Active	QSOP;24 pin;54 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0172 (PDF) Use pkgcode/variation: E24-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5929AHEEG-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5929ALEEG			Active	QSOP;24 pin;54 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0172 (PDF) Use pkgcode/variation: E24-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5929ALEEG-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5929ALEEG+			Active	QSOP;24 pin;54 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0172 (PDF) Use pkgcode/variation: E24+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5929ALEEG+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5929B	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5929BEEG+			Active	QSOP;24 pin;54 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0172 (PDF) Use pkgcode/variation: E24+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5929BEEG+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5929C	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5929CEEG+			Active	QSOP;24 pin;54 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0172 (PDF) Use pkgcode/variation: E24+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5929CEEG+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5929D	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5929DEEG+			Active	QSOP;24 pin;54 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0172 (PDF) Use pkgcode/variation: E24+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5929DEEG+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet

Related Products

MAX5904, MAX5905, MAX5906, MAX5907, MAX5908, MAX5909 Low-Voltage, Dual Hot-Swap Controllers/Power Sequencers

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