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Linear Technology Electronic Components Datasheet

LTC4223CGN-1 Datasheet

Dual Supply Hot Swap Controller

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FEATURES
Allows Safe Insertion into Live AMC or MicroTCA
Backplane
Controls 12V Main and 3.3V Auxiliary Supplies
Limits Peak Fault Current in ≤1μs
Adjustable Current Limit with Circuit Breaker
Integrated 0.3Ω AUX Switch
High Side Current Sense
Gate Drive for External N-Channel MOSFET
Adjustable Response Time for Overcurrent Protection
Adjustable Supply Voltage Power-Up Rate
Thermal Shutdown Protection
LTC4223-1: Latch Off After Fault
LTC4223-2: Automatic Retry After Fault
16-Lead SSOP and 5mm × 4mm DFN Packages
APPLICATIONS
Advanced Mezzanine Card, MicroTCA Systems
Workstations and Server I/O
Telecom Networks
LTC4223-1/LTC4223-2
Dual Supply Hot Swap
Controller for Advanced
Mezzanine Card
DESCRIPTION
The LTC®4223 positive voltage Hot SwapTM controller
allows a board to be safely inserted and removed from
a live AMC or MicroTCA backplane. It controls the main
12V supply with an external N-channel MOSFET and the
3.3V auxiliary supply with an integrated switch. The 12V
output ramp rate is adjustable and includes inrush current
limiting. The 12V output is also protected against short
circuit faults with a fast acting current limit and a 5%
accurate timed circuit breaker. The 3.3V output includes
both soft start and overcurrent protection.
The LTC4223 features a current monitor output for the
12V supply, and reports fault and power-good status for
both supplies. It also detects card presence and allows
independent control of the 12V and auxiliary 3.3V sup-
ply outputs. The LTC4223-1 features a latch-off circuit
breaker, while the LTC4223-2 provides automatic retry
after a fault.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Advanced Mezzanine Card Application
6mΩ
Si7336ADP
12V
12V
7.4A
10Ω
15nF
47Ω
12VIN 12VSENSE 12VGATE
3.3V
AUXIN
51Ω
VCC
330nF
AUXON
12ON
AUXPGOOD
12PGOOD
FAULT
LTC4223-1/LTC4223-2
IPMC
ADC
12IMON
GND
TIMER
0.1μF
12VOUT
AUXOUT
3.3V
150mA
EN
422312 TA01a
CARRIER MODULE
CONNECTOR CONNECTOR
Normal Power-Up Waveform
EN
5V/DIV
AUXOUT
5V/DIV
12VOUT
5V/DIV
AUXPGOOD
5V/DIV
12PGOOD
5V/DIV
20ms/DIV
422312 TA01b
422312f
1


Linear Technology Electronic Components Datasheet

LTC4223CGN-1 Datasheet

Dual Supply Hot Swap Controller

No Preview Available !

wwwL.DTataCShe4et42U.c2om3-1/LTC4223-2
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltages
12VIN ..................................................... –0.3V to 20V
AUXIN.................................................... –0.3V to 10V
VCC........................................................... –0.3V to 7V
Input Voltages
12ON, AUXON, EN ................................... –0.3V to 7V
TIMER..........................................–0.3V to VCC + 0.3V
12VSENSE ............................................... –0.3V to 20V
Output Voltages
FAULT, 12PGOOD, AUXPGOOD,
12IMON ................................................... –0.3V to 7V
12VGATE ................................................. –0.3V to 25V
12VOUT - 12VGATE (Note 3) ................... –4.5V to 0.3V
AUXOUT................................................. –0.3V to 10V
Operating Temperature Range
LTC4223-1C/ LTC4223-2C ....................... 0°C to 70°C
LTC4223-1I/ LTC4223-2I ..................... –40°C to 85°C
Storage Temperature Range
GN Package ....................................... –65°C to 150°C
DHD Package..................................... –65°C to 125°C
Lead Temperature (Soldering, 10sec)
GN Package ...................................................... 300°C
PIN CONFIGURATION
TOP VIEW
12VSENSE 1
12VIN 2
12IMON 3
12ON 4
AUXIN 5
VCC 6
AUXON 7
GND 8
16 12VGATE
15 12VOUT
14 12PGOOD
13 FAULT
12 AUXOUT
11 AUXPGOOD
10 EN
9 TIMER
GN PACKAGE
16-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 110°C/W
TOP VIEW
12VSENSE 1
12VIN 2
12IMON 3
12ON 4
AUXIN 5
VCC 6
AUXON 7
GND 8
16 12VGATE
15 12VOUT
14 12PGOOD
13 FAULT
17
12 AUXOUT
11 AUXPGOOD
10 EN
9 TIMER
DHD PACKAGE
16-LEAD (5mm × 4mm) PLASTIC DFN
EXPOSED PAD (PIN 17) PCB GND CONNECTION OPTIONAL
MUST BE SOLDERED TO PCB TO OBTAIN
θJA = 43°C/W, OTHERWISE θJA = 140°C/W, TJMAX = 125°C
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4223CDHD-1#PBF
LTC4223CDHD-1#TRPBF 42231
16-Lead (5mm × 4mm) Plastic DFN 0°C to 70°C
LTC4223CDHD-2#PBF
LTC4223CDHD-2#TRPBF 42232
16-Lead (5mm × 4mm) Plastic DFN 0°C to 70°C
LTC4223IDHD-1#PBF
LTC4223IDHD-1#TRPBF 42231
16-Lead (5mm × 4mm) Plastic DFN –40°C to 85°C
LTC4223IDHD-2#PBF
LTC4223IDHD-2#TRPBF 42232
16-Lead (5mm × 4mm) Plastic DFN –40°C to 85°C
LTC4223CGN-1#PBF
LTC4223CGN-1#TRPBF 42231
16-Lead Plastic SSOP
0°C to 70°C
LTC4223CGN-2#PBF
LTC4223CGN-2#TRPBF 42232
16-Lead Plastic SSOP
0°C to 70°C
LTC4223IGN-1#PBF
LTC4223IGN-1#TRPBF 4223I1
16-Lead Plastic SSOP
–40°C to 85°C
LTC4223IGN-2#PBF
LTC4223IGN-2#TRPBF 4223I2
16-Lead Plastic SSOP
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
422312f
2


Part Number LTC4223CGN-1
Description Dual Supply Hot Swap Controller
Maker Linear
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