MAX4271ESA+ Maxim Integrated Products, MAX4271ESA+ Datasheet

IC CNTRLR HOT SWAP 8-SOIC

MAX4271ESA+

Manufacturer Part Number
MAX4271ESA+
Description
IC CNTRLR HOT SWAP 8-SOIC
Manufacturer
Maxim Integrated Products
Type
Hot-Swap Controllerr
Datasheet
1.MAX4271ESA.pdf (26 pages)

Specifications of MAX4271ESA+

Applications
General Purpose
Internal Switch(s)
No
Voltage - Supply
2.7 V ~ 13.2 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Product
Controllers & Switches
Supply Voltage (max)
13.2 V
Supply Voltage (min)
2.7 V
Power Dissipation
471 mW
Operating Temperature Range
- 40 C to + 85 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX4271/MAX4272/MAX4273 comprise a com-
plete family of integrated 3V to 12V hot-swap con-
trollers. They allow the safe insertion and removal of
circuit cards into live backplanes.
The discharged filter capacitors of the circuit card pro-
vide a low impedance to the live backplane. High in-
rush currents from the backplane to the circuit card can
burn up connectors and components, or momentarily
collapse the backplane power supply leading to a sys-
tem reset. This family of hot-swap controllers prevents
such problems by regulating the current to a preset
limit when the board is plugged in, allowing the system
to stabilize safely. After the startup cycle is completed,
two on-chip comparators provide DualSpeed/BiLevel™
protection against short circuits, load glitches, and
overcurrent conditions. In the event of a fault condition,
the load is disconnected. Fault recovery is handled by
unlatching (MAX4271), autoretry (MAX4272), or pro-
grammed (MAX4273) methods.
The MAX4271 family includes many integrated features
that reduce component count and design time. An on-
board charge pump provides the gate drive for a low-
cost, external n-FET. Integrated features like startup
current regulation and current glitch protection eliminate
external timing resistors and capacitors. Also featured
are an open-drain status output to indicate a fault condi-
tion, and an adjustable overcurrent response time.
The MAX4271 (latched fault protection) and MAX4272
(autoretry fault protection) come in 8-pin SO packages.
The MAX4273 (full function) comes in the space-saving
16-pin QSOP package and 16-pin SO package. All
parts are specified across the extended temperature
range, and have an absolute maximum rating of 15V to
provide extra protection against inductive kickback dur-
ing board removal.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
19-1694; Rev 2; 12/07
DualSpeed/BiLevel is a trademark of Maxim Integrated
Products.
with Autoretry, DualSpeed/BiLevel Fault Protection
3V to 12V Current-Limiting Hot-Swap Controllers
GND
________________________________________________________________ Maxim Integrated Products
STAT
V
ON
BACKPLANE
CC
General Description
REMOVABLE CARD
2.7V TO 13.2V
STAT
ON
IN
R
SENSE
SENSE
MAX4271
MAX4272
♦ Provide Safe Hot Swap for +3V to +12V Power
♦ Unique Current Regulation Architecture
♦ Autoretry Feature (MAX4272/MAX4273)
♦ DualSpeed/BiLevel Current Limit Protects Against
♦ Power-On RESET (MAX4273)
♦ 15V Absolute Maximum Rating Protects Against
♦ Internal Charge Pump Generates Gate Drive for
♦ Status Output Pin Indicates Fault/Safe Condition
♦ Space-Saving 8-Pin SO, 16-Pin QSOP Packages
________________________Applications
Pin Configurations appear at end of data sheet.
MAX4271ESA
MAX4272ESA
MAX4273EEE
MAX4273ESE
GND
M1
Supplies with Few External Components
Minimizes n-FET Linear Mode Duration
Current Glitches and Short Circuits
Inductive Kickbacks During Board Removal
External n-MOSFET
Base Stations
RAID
Remote-Access Servers
GATE
N
PART
Typical Operating Circuit
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
CSPD
CTIM
Ordering Information
Network Routers and
Switches
ISDN
C
16 QSOP
16 SO
C
TIM
PIN-
PACKAGE
8 SO
8 SO
BOARD
V
OUT
Features
CODE
E16-1
E16-1
PKG
S8-1
S8-1
1

Related parts for MAX4271ESA+

Image
Part Number
Description
Manufacturer
Datasheet
Request R
MAX427
Part Number:
MAX427
Description:
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX427.pdf (12 pages)
MAX7528KCWP
Part Number:
MAX7528KCWP
Description:
MAX7528KCWPMaxim Integrated Products [CMOS Dual 8-Bit Buffered Multiplying DACs]
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX7528KCWP.pdf (12 pages)
MAX3261CCJ
Part Number:
MAX3261CCJ
Description:
Single +5V, fully integrated, 1.25Gbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX3261CCJ.pdf (12 pages)
MAX3263CAG
Part Number:
MAX3263CAG
Description:
Single +5V, fully integrated, 155Mbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX3263CAG.pdf (12 pages)
MAX8809AETL+
Part Number:
MAX8809AETL+
Description:
VRD11/VRD10, K8 Rev F 2/3/4-Phase PWM Controllers with Integrated Dual MOSFET Drivers
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX8809AETL.pdf (50 pages)
MAX1535CETJ+T
Part Number:
MAX1535CETJ+T
Description:
Highly Integrated Level 2 SMBus Battery Chargers
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX1535CETJT.pdf (39 pages)
DS2741N+
Part Number:
DS2741N+
Description:
Current Monitor and Accumulator with Integrated Sense Resistor; ; Temperature Range: -40°C to +85°C
Manufacturer:
Maxim Integrated Products
MAX13450EAUD+T
Part Number:
MAX13450EAUD+T
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
MAX13451EAUD+T
Part Number:
MAX13451EAUD+T
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
MAX17497BATE+
Part Number:
MAX17497BATE+
Description:
QFN 16/A°/AC-DC and DC-DC Peak-Current-Mode Converters with Integrated Step
Manufacturer:
Maxim Integrated Products
MAX17502FATB+T
Part Number:
MAX17502FATB+T
Description:
TDFN/A/65V, 1A, 600KHZ, SYNCHRONOUS STEP-DOWN REGULATOR WITH INTEGRATED SWI
Manufacturer:
Maxim Integrated Products
MAX1978EVKIT
Part Number:
MAX1978EVKIT
Description:
Integrated Temperature Controller f
Manufacturer:
Maxim Integrated Products
MAX2606EUT+
Part Number:
MAX2606EUT+
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
MAX2608EUT+
Part Number:
MAX2608EUT+
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
MAX2831EVKIT+
Part Number:
MAX2831EVKIT+
Description:
EVALUATION KIT/2.4GHZ TO 2.5GHZ 802.11G/B RF TRANSCEIVER WITH INTEGRATED PA
Manufacturer:
Maxim Integrated Products

MAX4271ESA+ Summary of contents

Page 1

... V CC STAT GND ON ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ♦ Provide Safe Hot Swap for +3V to +12V Power Supplies with Few External Components ♦ Unique Current Regulation Architecture Minimizes n-FET Linear Mode Duration ♦ ...

Page 2

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection ABSOLUTE MAXIMUM RATINGS IN to GND ............................................................................+15V STAT, OUTC, LLMON, AUXVCC to GND ...............-0.3V to +14V GATE to GND ..............................................-0. GATE to LLMON (Note 1).........................................-1V to +8.5V ...

Page 3

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection ELECTRICAL CHARACTERISTICS (continued +2.7V to +13.2V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL Slow Turn-Off Time t ...

Page 4

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection ELECTRICAL CHARACTERISTICS (continued +2.7V to +13.2V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL Input Voltage Range Input ...

Page 5

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection ( 100mΩ 47µ SENSE BOARD SUPPLY CURRENT vs. INPUT VOLTAGE 1 10μA GATE ...

Page 6

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection ( 100mΩ 47µ SENSE BOARD FAST GATE DISCHARGE CURRENT vs. V GATE 1 12V IN 1 ...

Page 7

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection ( 100mΩ SENSE BOARD FAST GATE DISCHARGE CURRENT vs. TEMPERATURE 2 2.2 GATE IN 2.0 1.8 ...

Page 8

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection ( 100mΩ 47µ SENSE BOARD INC THRESHOLD vs. INPUT VOLTAGE 0.625 RISING 0.615 0.605 FALLING 0.595 0.585 0.575 ...

Page 9

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection ( 100mΩ 47µ SENSE BOARD STARTUP TIME (C BOARD 100μs/div 100mΩ, BOARD SENSE C = ...

Page 10

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection PIN MAX4271 MAX4273 NAME MAX4272 6 11 CTIM 7 12 STAT — 14 REF — 15 INC — 16 OUTC Detailed Description The MAX4271/MAX4272/MAX4273 are circuit ...

Page 11

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection 2.45V INPUT UVLO 150ms DELAY ON V RISING IN STAT V IN 4μA CTIM C TIM GND Figure 1. MAX4271/MAX4272 Functional Diagram Unlike other circuit breaker ICs, the MAX4271/ ...

Page 12

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection AUXVCC 2.45V INPUT REF REF UVLO 1.2V 150ms DELAY ON V RISING IN STAT V IN 4μA CTIM CTIM V IN 4μA CTON CTON OUTC GND Figure 2. MAX4273 ...

Page 13

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection In each case, when a fault is encountered, the status pin (STAT) goes low, and for the MAX4273, the device discharges the output voltage through a 1kΩ resistor from ...

Page 14

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection If the sensed current is still high after the startup timer expires, the MOSFET gate is discharged completely as described below. In normal operation (after startup), the fast comparator ...

Page 15

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection is stable. Any input voltage transient at IN below the UVLO threshold will reset the device and initiate a start- up sequence. These devices also have an overvoltage lockout ...

Page 16

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection configured in automatic retry mode (see MOSFET Thermal Considerations). Using the MAX4271/MAX4273 in latched mode allows the consideration of MOSFETs with higher R lower power ratings. A MOSFET can ...

Page 17

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection CTON determines the maximum time allowed to com- plete turn-on for the MAX4273. The default values for turn-on time (t ) and t are chosen by leaving ON RETRY ...

Page 18

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection Table 6. “No-Overcurrent” Turn-On Timing (Startup Without Current Limit) C GATE DEVICE (nF) 0 Fairchild FDS6670A 22 0 International Rectifier IRF7401 22 0 Motorola MMSF5N03HD 22 t AND t ...

Page 19

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection MOSFET with a duty cycle equal current equal Therefore, particular care FAST,SET has to be taken when choosing between immediate retry and board ...

Page 20

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection SENSE GATE LLMON INC MAX4273 OUTC Figure 12. Power-On Reset SENSE GATE INC REF MAX4273 ON OUTC LLMON GND Figure 13. Power-On Reset ...

Page 21

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection • • • Figure 15. Adjustable Undervoltage Lockout and Output Voltage Reset Generator is discharged immediately, but note that the MOSFET is not completely off until V < V ...

Page 22

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection 100 D = 0.50 0.20 10 0.10 0.05 0.02 1 0.01 SINGLE PULSE (THERMAL RESPONSE) 0.1 0.0001 0.001 Figure 17. Example Curves (from IRF7413A) for Maximum Effective Transient Thermal ...

Page 23

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection Calculate the MOSFET thermal resistance required for a short to ground (150°C - 85°C) / (5V θJA Using t = 1ms as the pulse duration, use START ...

Page 24

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages TOP VIEW D ...

Page 25

Current-Limiting Hot-Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ Package Information (continued) 25 ...

Page 26

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 26 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products ...

Related keywords