max5934aeeet Maxim Integrated Products, Inc., max5934aeeet Datasheet

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max5934aeeet

Manufacturer Part Number
max5934aeeet
Description
Max5934, Max5934a Positive High-voltage, Hot-swap Controllers With Selectable Fault Management And Status Polarity
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
The MAX5934/MAX5934A are fully integrated hot-swap
controllers for +9V to +80V (MAX5934A) positive supply
rails. The MAX5934 is optimized for +33V to +80V
power-supply rails. These devices allow for the safe
insertion and removal of circuit cards into a live back-
plane without causing glitches on the backplane
power-supply rail. The MAX5934/MAX5934A feature a
programmable analog foldback current limit, program-
mable undervoltage lockout, and programmable out-
put-voltage slew rate through an external n-channel
MOSFET. In addition, if these devices remain in current
limit for more than a programmable time, the external
n-channel MOSFET latches off.
The MAX5934/MAX5934A feature pin-selectable
PWRGD_ assertion polarity (active low or active high)
and pin-selectable fault management (latched or
autoretry). Other features include automatic restart after
a circuit-breaker fault, selectable duty-cycle (DC)
options, and thermal-shutdown mode for overtempera-
ture protection.
The MAX5934/MAX5934A operate in the extended
(-40°C to +85°C) temperature range and are available
in a 16-pin QSOP package.
19-3282; Rev 1; 7/04
Positive High-Voltage, Hot-Swap Controllers with
Selectable Fault Management and Status Polarity
Typical Application Circuit appears at end of data sheet.
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.
MAX5934
MAX5934A
Hot Board Insertion
Electronic Circuit Breakers
Industrial High-Side Switch/Circuit Breakers
Network Routers and Switches
24V/48V Industrial/Alarm Systems
PART
________________________________________________________________ Maxim Integrated Products
DEFAULT UVLO
General Description
8.3
(V)
31
Applications
SUPPLY VOLTAGE
RANGE (V)
+33 to +80
+9 to +80
AUTORETRY FAULT
♦ Provides Safe Hot Swap for +9V to +80V Power
♦ Safe Board Insertion and Removal from a Live
♦ Pin-Selectable Active-Low or Active-High Power-
♦ Pin-Selectable Latched or Autoretry Fault
♦ Programmable Foldback Current Limiting
♦ High-Side Drive for an External N-Channel MOSFET
♦ Built-In Thermal Shutdown
♦ Undervoltage Lockout (UVLO)
♦ Pin-Selectable Duty-Cycle Options (0.94%, 1.88%,
MAX5934EEE
MAX5934AEEE
PROTECTION
TOP VIEW
Pin-selectable
Pin-selectable
Supplies (MAX5934A)
Backplane
Good Output
Management
3.75%)
LATCHED/
PART
LATCH/RETRY
POL_SEL
PWRGD2
PWRGD1
PWRGD3
GND
FB1
ON
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
DUTY CYCLE
Pin-selectable
Pin-selectable
1
2
3
4
5
6
7
8
Ordering Information
MAX5934A
MAX5934
Pin Configuration
QSOP
Selector Guide
16
15
14
13
12
11
10
9
OUTPUT LOGIC
PIN-PACKAGE
16 QSOP
16 QSOP
Pin-selectable
Pin-selectable
V
DC
SENSE
N.C.
FB2
GATE
TIMER
OUT
Features
CC
PWRGD_
1

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max5934aeeet Summary of contents

Page 1

Rev 1; 7/04 Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity General Description The MAX5934/MAX5934A are fully integrated hot-swap controllers for +9V to +80V (MAX5934A) positive supply rails. The MAX5934 is optimized for +33V to +80V ...

Page 2

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND.) V .........................................................................-0.3V to +85V CC SENSE, FB_, ON.........................................-0. TIMER, PWRGD_, DC, LATCH/RETRY, POL_SEL ....-0.3V to +85V GATE ......................................................................-0.3V to +95V ...

Page 3

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity ELECTRICAL CHARACTERISTICS (continued +24V (MAX5934A +48V (MAX5934), GND = 0V +25°C.) (Note 1) A PARAMETER SYMBOL TIMER Pulldown Current I ...

Page 4

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity ELECTRICAL CHARACTERISTICS (continued +24V (MAX5934A +48V (MAX5934), GND = 0V +25°C.) (Note 1) A PARAMETER SYMBOL FB_ Low-to-PWRGD_ Low t ...

Page 5

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity (V = +48V +25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE 2.7 2.4 2 +25°C 1 +85°C A 1.5 ...

Page 6

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity (V = +48V +25°C, unless otherwise noted TIMER PULLUP CURRENT vs. TEMPERATURE -60 -65 -70 -75 -80 -85 -90 -40 - TEMPERATURE ...

Page 7

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity PIN NAME Circuit-Breaker Fault-Management Select Input. Connect LATCH/RETRY to GND to latch off after a circuit- LATCH/ breaker fault. Leave LATCH/RETRY open or drive to logic-high voltage for automatic ...

Page 8

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity MAX5934 MAX5934A V P REF GEN OPEN PWRGD1 DRAIN 1.233V UVLO 0.5V 1.233V 8 _______________________________________________________________________________________ FB1 V SENSE GEN LOGIC V P ...

Page 9

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity Detailed Description The MAX5934/MAX5934A are fully integrated hot-swap controllers for positive supply rails. These devices allow for the safe insertion and removal of circuit cards into live backplanes without ...

Page 10

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity V SENSETRIP = I LOAD R SENSE where SENSETRIP IN V varies from a low of 12mV when the voltage SENSETRIP at FB1 = ...

Page 11

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity In latch mode, the MAX5934/MAX5934A turn the MOSFET off and keep it off after an overcurrent fault. After the fault condition goes away and TIMER falls below 0.5V, recycle ...

Page 12

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity RESPONSE TIME TO OVERCURRENT 150 0 50 100 200 (mV) CC SENSE Figure 7. Response Time to Overcurrent ...

Page 13

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity OVERVOLTAGE WAVEFORMS 10µs/div Figure 9. Overvoltage Waveforms changes in currents flowing through the power-supply traces. This can cause inductive voltage spikes that could exceed 85V. Use wider traces or ...

Page 14

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity 49.9kΩ 3.4kΩ 1% SMBJ54A C TIMER 0.68µ GND 14 ______________________________________________________________________________________ R SENSE 0.025Ω 1kΩ 10Ω ...

Page 15

Positive High-Voltage, Hot-Swap Controllers with Selectable Fault Management and Status Polarity (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.) Maxim cannot assume responsibility for use ...

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