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MAX5929

Description
4-CHANNEL POWER SUPPLY SUPPORT CKT, QCC32
Categorysemiconductor    Analog mixed-signal IC   
File Size567KB,25 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Parametric Compare View All

MAX5929 Overview

4-CHANNEL POWER SUPPLY SUPPORT CKT, QCC32

MAX5929 Parametric

Parameter NameAttribute value
Number of functions1
Number of terminals32
Maximum operating temperature85 Cel
Minimum operating temperature-40 Cel
Maximum supply/operating voltage13.2 V
Minimum supply/operating voltage1 V
Rated supply voltage3.3 V
Processing package description5 X 5 MM, 0.8 MM HEIGHT, MO-220WHHD-2, QFN-32
stateACTIVE
CraftsmanshipBICMOS
packaging shapeSQUARE
Package SizeCHIP CARRIER, VERY THIN PROFILE
surface mountYes
Terminal formNO LEAD
Terminal spacing0.5000 mm
terminal coatingTIN LEAD
Terminal locationQUAD
Packaging MaterialsUNSPECIFIED
Temperature levelINDUSTRIAL
Number of channels4
Adjustable thresholdYes
Analog IC other typesPOWER SUPPLY SUPPORT CKT
19-2945; Rev 1; 1/04
KIT
ATION
EVALU
BLE
AVAILA
Low-Voltage, Quad, Hot-Swap
Controllers/Power Sequencers
General Description
Features
Safe Hot Swap for +1V to +13.2V Power Supplies
with Any Input Voltage (V
IN_
2.7V and Only One
V
IN_
> 11.0V)
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
MAX5927/MAX5929
The MAX5927/MAX5929 +1V to +13.2V quad hot-swap
controllers provide complete protection for multisupply
systems. They allow the safe insertion and removal of cir-
cuit cards into live backplanes. These devices hot swap
multiple supplies ranging from +1V to +13.2V, provided
one supply is at or above +2.7V and only one supply is
above +11.0V. 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 pro-
vide 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 MAX5927/MAX5929 hot-swap controllers prevent
such problems by gradually ramping up the output volt-
age 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 com-
parators provide VariableSpeed/BiLevel™ protection
against short-circuit and overcurrent faults, and provide
immunity against system noise and load transients. The
load is disconnected in the event of a fault condition. The
MAX5929A automatically restarts after a fault condition,
while the MAX5929L must be unlatched. The MAX5927
fault management mode is selectable.
The MAX5927/MAX5929 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 cur-
rent regulation and current glitch protection to eliminate
external timing resistors and capacitors. The
MAX5929_L provides an open-drain active-low status
output for each channel, the MAX5929_H provides an
open-drain active-high status output for each channel,
and the MAX5927 status output polarity is selectable.
The MAX5927 is available in a 32-pin thin QFN package
and the MAX5929 is available in a 24-pin QSOP pack-
age. All devices are specified over the extended tem-
perature range, -40°C to +85°C.
Ordering Information
PART
MAX5927ETJ
MAX5929LHEEG
MAX5929LLEEG
MAX5929AHEEG
MAX5929ALEEG
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
32 Thin QFN-EP
24 QSOP
24 QSOP
24 QSOP
24 QSOP
EP = Exposed paddle.
Selector Guide and Typical Operating Circuit appear at end
of data sheet.
Pin Configurations
LIM1
MODE
ON1
ON2
ON3
TOP VIEW
ON4
POL
32
31
30
29
28
27
26
25
24
23
22
21
LIM2
IN1
SENSE1
GATE1
LIM4
IN4
SENSE4
GATE4
STAT1
1
2
3
4
5
6
7
8
10
11
12
13
14
15
16
IN2
SENSE2
GATE2
LIM3
N.C.
IN3
SENSE3
GATE3
MAX5927
20
19
18
17
Applications
PCI Express Hot Plug
Hot Plug-In Daughter Cards
RAID
Power-Supply
Sequencing/Tracking
Basestation Line Cards
Portable Computer Device
Bays (Docking Stations)
Network Switches, Routers,
Hubs
STAT2
9
LATCH
STAT3
TIM
THIN QFN
VariableSpeed/BiLevel is a trademark of Maxim Integrated
Products, Inc.
Pin Configurations continued at end of data sheet.
1
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
STAT4
BIAS
GND
N.C.

MAX5929 Related Products

MAX5929 MAX5929LHEEG MAX5929LLEEG MAX5927
Description 4-CHANNEL POWER SUPPLY SUPPORT CKT, QCC32 4-CHANNEL POWER SUPPLY SUPPORT CKT, QCC32 4-CHANNEL POWER SUPPLY SUPPORT CKT, QCC32 4-CHANNEL POWER SUPPLY SUPPORT CKT, QCC32
Number of functions 1 1 1 1
Number of terminals 32 24 24 32
Maximum operating temperature 85 Cel 85 °C 85 °C 85 Cel
Minimum operating temperature -40 Cel -40 °C -40 °C -40 Cel
surface mount Yes YES YES Yes
Terminal form NO LEAD GULL WING GULL WING NO LEAD
Terminal location QUAD DUAL DUAL QUAD
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
Number of channels 4 4 4 4
Adjustable threshold Yes YES YES Yes
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