ds4560 Maxim Integrated Products, Inc., ds4560 Datasheet

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ds4560

Manufacturer Part Number
ds4560
Description
12v Hot-plug Switch
Manufacturer
Maxim Integrated Products, Inc.
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ds4560L
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
ds4560S-AR+
Manufacturer:
TOSHIBA
Quantity:
1 200
Part Number:
ds4560S-AR+T
Manufacturer:
MAXIM
Quantity:
4
Part Number:
ds4560S-LO+T
Manufacturer:
MAXIM/美信
Quantity:
20 000
The DS4560 is a self-contained hot-plug switch intend-
ed to be used on +12V power buses to limit through
current and to control the power-up output-voltage
ramp. The device contains an on-board 25mΩ n-chan-
nel power MOSFET that is actively closed-loop con-
trolled to ensure that an adjustable current limit is not
exceeded. The maximum allowable current through the
device is determined by an external resistor connected
to the ILIM pin.
The DS4560 also contains the ability to control the
power-up output-voltage ramp. A capacitor connected
to the VRAMP pin sets the desired voltage ramp rate.
The output voltage is unconditionally clamped to keep
input overvoltage stresses from harming the load. The
DS4560 also contains an adjustable power-up timer. A
capacitor connected to the TIMER pin determines how
long after power-on reset the DS4560 should wait
before starting to apply power to the load. The TIMER
pin can also be driven with a digital logic output to cre-
ate a device-enable function.
The DS4560 contains an on-board temperature sensor
with hysteresis. If operating conditions cause the
device to exceed an internal thermal limit, the DS4560
either unconditionally shuts down and latches off await-
ing a power-on reset (DS4560S-LO), or it waits until the
device has cooled by the hysteresis amount and then
restarts (DS4560S-AR).
+ Denotes a lead-free/RoHS-compliant package.
T = Tape and reel.
Rev 1; 9/08
PCI Express is a registered trademark of PCI-SIG Corp.
InfiniBand is a service mark of System I/O, Inc.
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.
DS4560S-LO+
DS4560S-LO+T
DS4560S-AR+
DS4560S-AR+T
PART
RAID/Hard Drives
Servers/Routers
PCI/PCI Express
________________________________________________________________ Maxim Integrated Products
SHUTDOWN
Ordering Information
THERMAL
Autoretry
Autoretry
®
General Description
Latchoff
Latchoff
InfiniBand
Base Stations
Applications
SM
PIN-PACKAGE
8 SO
8 SO
8 SO
8 SO
♦ On-Board 25mΩ Power MOSFET
♦ Adjustable Short-Circuit Current and Overload
♦ Adjustable Output-Voltage Slew Rate
♦ Adjustable Power-Up Timer with External Enable
♦ Output Overvoltage Limiting
♦ On-Board Thermal Protection
♦ On-Board Charge Pump
♦ Latchoff and Autoretry Versions Available
♦ 9.0V to 13.2V Supply Operation
♦ 8-Pin SO (150 mils) Pb-Free Package
5, 6, 7
PIN
Current Limit
Capability
1
2
3
4
8
12V Hot-Plug Switch
VRAMP
NAME
TIMER
LOAD
GND
ILIM
V
VRAMP
TOP VIEW
TIMER
CC
GND
ILIM
Ground. This is also a heat sink for the
device.
Output-Voltage Ramp Adjustment
Power-Up Timer/Enable
Current-Limit Adjustment
Output Load Connection (MOSFET Source)
Input Supply Voltage (MOSFET Drain)
1
2
3
4
SO (150 mils)
+
DS4560
Pin Configuration
Pin Description
FUNCTION
8
7
6
5
V
LOAD
LOAD
LOAD
CC
Features
1

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ds4560 Summary of contents

Page 1

... If operating conditions cause the device to exceed an internal thermal limit, the DS4560 either unconditionally shuts down and latches off await- ing a power-on reset (DS4560S-LO waits until the device has cooled by the hysteresis amount and then restarts (DS4560S-AR). RAID/Hard Drives ...

Page 2

Hot-Plug Switch ABSOLUTE MAXIMUM RATINGS Voltage Range on V and LOAD Relative to GND CC Continuous .........................................................-0.3V to +18V 1ms Maximum ....................................................-0.3V to +22V Voltage Range on ILIM and VRAMP Relative to GND.....................................-0. Voltage Range on TIMER ...

Page 3

... MIN TYP MAX 2.0 2.5 3.0 3.5 4.4 5.9 0.13 0.15 0. OVERVOLTAGE CLAMP vs. TEMPERATURE 16.4 16.2 16.0 NO LOAD 15.8 15.6 10Ω LOAD 15.4 15.2 15.0 120 140 -40 - TEMPERATURE (°C) TYPICAL DS4560 TURN-ON WAVEFORMS V = 18V, 10Ω RESISTIVE LOAD LOAD TIMER 5V/div 0V 120 140 2ms/div UNITS A A V/ms μA 100 120 140 DS4560 toc06 VRAMP 3 ...

Page 4

... DS4560 toc07 LOAD 500mA/div DS4560 toc09 LOAD 500mA/div 5ms TURN-ON WAVEFORMS 3300μF CAPACITIVE LOAD DS4560 toc08 V CC 2V/div LOAD 0V LOAD CURRENT 0mA 5ms/div THERMAL SHUTDOWN WITH AUTORETRY DS4560S-AR 18V, 10Ω RESISTIVE LOAD CC DS4560 toc10 V CC LOAD 5V/div 0V LOAD CURRENT 0mA 500ms/div ...

Page 5

... I the source if there is a dead short on initial power-up. ) and during nor- SCL The DS4560 acts as a fuse and automatically disables the current flowing to the load when the temperature of the power MOSFET has exceeded the shutdown junc- tion temperature, T ...

Page 6

... V level, and the gate can sink the I An open-collector device is connected in parallel with C . When the pin is held low, the DS4560 is dis- TIMER abled. When the open-collector driver is high imped- ance, the internal current source begins to charge the delayed mode ...

Page 7

... See the THERMAL SHUTDOWN WITH AUTORETRY graph for details. _______________________________________________________________________________________ 12V Hot-Plug Switch The GND pin of the DS4560 is also a heat sink for the device. This pin should be connected to a large trace or plane capable of dissipating heat from the device. , the junction ...

Page 8

... Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products DESCRIPTION + 0.3V” to “5V.” registered trademark of Maxim Integrated Products, Inc. Revision History PAGES CHANGED — 2 ...

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