MAX5947CESA+ Maxim Integrated Products, MAX5947CESA+ Datasheet

IC CNTRLR HOT SWAP 8-SOIC

MAX5947CESA+

Manufacturer Part Number
MAX5947CESA+
Description
IC CNTRLR HOT SWAP 8-SOIC
Manufacturer
Maxim Integrated Products
Type
Hot-Swap Controllerr
Datasheet

Specifications of MAX5947CESA+

Applications
General Purpose
Internal Switch(s)
No
Voltage - Supply
9 V ~ 80 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX5933A–MAX5933F/MAX5947A/B/C fully integrat-
ed hot-swap controllers for +9V to +80V positive supply
rails (MAX5947A/B/C), allow for the safe insertion and
removal of circuit cards into live backplanes without caus-
ing glitches on the backplane power-supply rail. The
MAX5947B is pin- and function-compatible with the
LT1641-2. The other devices offer added features such
as a choice of active-high or active-low power-good out-
puts (PWRGD/PWRGD), latched/autoretry fault manage-
ment, and autoretry duty-cycle options of 3.75% or 0.94%
(see the Selector Guide).
The MAX5933A–MAX5933F are available with a default
undervoltage lockout threshold of +31V and operate over
a supply voltage range of +33V to +80V. The
MAX5947A/B/C are available with a default undervoltage
of +8.3V. All devices feature a programmable analog
foldback current limit. If the device remains in current limit
for more than a programmable time, the external
n-channel MOSFET is either latched off (MAX5933A/
MAX5933C/MAX5947A) or is set to automatically restart
after a timeout delay (MAX5933B/MAX5933D/MAX5933E/
MAX5933F/MAX5947B/MAX5947C).
The MAX5933_ and MAX5947_ operate in the extended
temperature range of -40°C to +85°C. These devices are
available in an 8-pin SO package.
19-3263; Rev 1; 7/04
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.
Hot Board Insertion
Electronic Circuit Breakers
Industrial High-Side Switch/Circuit Breakers
Network Routers and Switches
24V/48V Industrial/Alarm Systems
MAX5933A
MAX5933B
MAX5933C
MAX5933D
MAX5947A
MAX5947B
MAX5947C
MAX5933E
MAX5933F
PART
Positive High-Voltage, Hot-Swap Controllers
________________________________________________________________ Maxim Integrated Products
PROTECTION
LATCHED
FAULT
Yes
Yes
Yes
General Description
PROTECTION
Applications
AUTORETRY
FAULT
Yes
Yes
Yes
Yes
Yes
Yes
OUTPUT LOGIC
PWRGD
High
High
High
High
Low
Low
Low
Low
Low
♦ Pin- and Function-Compatible with the LT1641-2
♦ Provides Safe Hot Swap for +9V to +80V Power-
♦ Safe Board Insertion and Removal from Live
♦ Latched/Autoretry Management
♦ Active-Low or Active-High Power-Good Output
♦ Programmable Foldback Current Limiting
♦ High-Side Drive for an External N-Channel MOSFET
♦ Built-In Thermal Shutdown
♦ Undervoltage Lockout (UVLO)
♦ Overvoltage Protection
♦ User-Programmable Supply Voltage
*Insert the desired suffix from the Selector Guide into the blank
to complete the part number.
Typical Application Circuit and Pin Configuration appear at
end of data sheet.
MAX5933_ESA*
MAX5947_ESA*
(MAX5947B)
Supply Range (MAX5947A/B/C)
Backplanes
Power-Up Rate
PART
DUTY CYCLE
3.75
3.75
0.94
0.94
3.75
3.75
(%)
Ordering Information
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
DEFAULT UVLO
(V)
8.3
8.3
8.3
31
31
31
31
31
31
Selector Guide
PIN-PACKAGE
8 SO
8 SO
Features
RANGE (V)
VOLTAGE
SUPPLY
33 to 80
33 to 80
33 to 80
33 to 80
33 to 80
33 to 80
9 to 80
9 to 80
9 to 80
1

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MAX5947CESA+ Summary of contents

Page 1

... Yes MAX5947B — MAX5947C — ________________________________________________________________ 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. ♦ Pin- and Function-Compatible with the LT1641-2 (MAX5947B) ♦ Provides Safe Hot Swap for +9V to +80V Power- Supply Range (MAX5947A/B/C) ♦ ...

Page 2

Positive High-Voltage, Hot-Swap Controllers ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to GND) V .........................................................................-0.3V to +85V CC SENSE, FB, ON ..........................................-0. TIMER, PWRGD, PWRGD.......................................-0.3V to +85V GATE ......................................................................-0.3V to +95V Maximum GATE Current ....................................-50mA, +150mA Maximum Current into Any ...

Page 3

Positive High-Voltage, Hot-Swap Controllers ELECTRICAL CHARACTERISTICS (continued +24V (MAX5947A/B/C +48V (MAX5933A–MAX5933F), GND = 0V Typical values are +25°C.) (Note 1) A PARAMETER SYMBOL ON Hysteresis V ON Input Bias Current ...

Page 4

Positive High-Voltage, Hot-Swap Controllers SENSE MAX5933_ MAX5947_ PWRGD GATE 5kΩ TIMER GND Figure 1. Test Circuit 1.313V ON t PLHON 5V GATE Figure GATE Timing 4 _______________________________________________________________________________________ Test Circuit and ...

Page 5

Positive High-Voltage, Hot-Swap Controllers (V = +48V +25°C, unless otherwise noted vs 2.7 2.4 2.1 1 +85° +25°C A 1.5 1.2 0 -40°C A 0.6 ...

Page 6

Positive High-Voltage, Hot-Swap Controllers (V = +48V +25°C, unless otherwise noted TIMER PULLUP CURRENT vs. TEMPERATURE -60 -65 -70 -75 -80 -85 -90 -40 - TEMPERATURE (°C) ON HIGH-VOLTAGE THRESHOLD vs. TEMPERATURE 1.343 ...

Page 7

Positive High-Voltage, Hot-Swap Controllers PIN NAME ON/OFF Control Input used to implement the undervoltage lockout threshold and resets the part 1 ON after a fault condition for the latched-off version (MAX5933A/MAX5933C/MAX5947A, see the Detailed Description section). Power-Good Comparator ...

Page 8

Positive High-Voltage, Hot-Swap Controllers PWRGD (PWRGD FOR THE MAX5933C/D/F AND THE MAX5947A/C. *FOR THE MAX5933E/MAX5933F. 8 _______________________________________________________________________________________ FB V SENSE CC MAX5933_ MAX5947_ V GEN P CHARGE REF PUMP GEN 0.5V GATE DRIVER OPEN 12mV TO 47mV ...

Page 9

Positive High-Voltage, Hot-Swap Controllers Detailed Description The MAX5933_ and MAX5947_ are fully integrated hot- swap controllers for positive supply rails. The devices allow for the safe insertion and removal of circuit cards into live backplanes without causing glitches on the ...

Page 10

Positive High-Voltage, Hot-Swap Controllers Applications Information Hot-Circuit Insertion When circuit boards are inserted into a live backplane, the supply bypass capacitors on the boards draw high peak currents from the backplane power bus as they charge up. The transient currents ...

Page 11

Positive High-Voltage, Hot-Swap Controllers RESPONSE TIME TO OVERCURRENT 100 (mV) CC SENSE Figure 8. Response Time to Overcurrent TIMER provides a method for programming the maxi- mum time ...

Page 12

Positive High-Voltage, Hot-Swap Controllers V IN SHORT PIN R1 D1 49.9kΩ 30V 1% 1N5256B R2 3.4kΩ 0.68µF GND Figure 10. Overvoltage Detection OVERVOLTAGE WAVEFORMS 10µs/div Figure 11. Overvoltage Waveforms 12 ______________________________________________________________________________________ R SENSE Q1 0.025Ω IRF530 R5 10Ω ...

Page 13

Positive High-Voltage, Hot-Swap Controllers V IN SHORT PIN R1 0.1µF 294kΩ 10.2kΩ 5 TIMER 1% C2 0.68µF GND Figure 12. Active-Low Enable Module GATE DRIVE vs ...

Page 14

Positive High-Voltage, Hot-Swap Controllers MAX5933_ MAX5947_ IRF530 Figure 14. Recommended Layout for R1, R2, and R SENSE *SMBJ51A 49.9kΩ 3.4kΩ 0.68µF GND *DIODES, INC. 14 ______________________________________________________________________________________ TRANSISTOR COUNT: 1573 PROCESS: BiCMOS TOP VIEW ...

Page 15

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2004 Maxim Integrated Products ...

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