900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Linear Technology Electronic Components Datasheet

LTC4215-3 Datasheet

Hot Swap Controller

No Preview Available !

FEATURES
n Allows Safe Insertion into Live Backplane
n 8-Bit ADC Monitors Current and Voltage
n I2C/SMBus Interface
n Wide Operating Voltage Range: 2.9V to 15V
n dI/dt Controlled Soft-Start
n Circuit Breaker Timeout: 20μs (LTC4215-1) or
420μs (LTC4215-3)
n Three General Purpose Outputs
n High Side Drive for External N-channel MOSFET
n No External Gate Capacitor Required
n Input Overvoltage/Undervoltage Protection
n Optional Latchoff or Auto-Retry After Faults
n Alerts Host After Faults
n Inrush Current Limit with Foldback
n Available in 24-Pin (4mm × 5mm) QFN
APPLICATIONS
n Live Board Insertion
n Electronic Circuit Breakers
n Computers, Servers
n Platform Management
LTC4215-1/LTC4215-3
Hot Swap Controller with
I2C Compatible Monitoring
DESCRIPTION
The LTC®4215-1/LTC4215-3 Hot Swap™ controllers allow
a board to be safely inserted and removed from a live
backplane. Using an external N-channel pass transistor,
board supply voltage and inrush current are ramped up at
an adjustable rate. An I2C interface and onboard ADC allow
for monitoring of load current, voltage and fault status.
The device features adjustable foldback current limit and
a soft-start pin that sets the dI/dt of the inrush current.
An I2C interface may configure the part to latch off or
automatically restart after the LTC4215-1/LTC4215-3
detect a current limit fault.
The controller has additional features to interrupt the host
when a fault has occurred, provide three general purpose
outputs, notify when output power is good, detect insertion
of a load card, and power-up either automatically upon
insertion or wait for an I2C command to turn on.
The LTC4215-1 has a 20μs circuit breaker filter for applica-
tions that require a fast fault response time. The LTC4215-3
has an extended 420μs circuit breaker filter for applications
where supply transients may exceed 20μs.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. Hot Swap is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U.S. Patent 7330065.
TYPICAL APPLICATION
12V Application With 5A Circuit Breaker
Start-Up Waveform
12V
SDA
SCL
GND
BACKPLANE PLUG-IN
CARD
0.1μF
3.4k
P6KE16A
34.8k
0.005Ω FDC653N
VOUT
+ 12V
CL 30.1k
10Ω
1.18k
3.57k
UV VDD SENSE+ SENSEGATE SOURCE
OV FB
SDAI
SDAO
SCL
ADR0
ADR1
LTC4215-1
GPIO1
GPIO2
GPIO3
ADIN
INTVCC
ON TIMER SS
GND EN
POWERGOOD
RESET
OK LED
MEASURED
VOLTAGE
0.1μF
68nF
4215 TA01a
VDD
10V/DIV
INRUSH
CURRENT
2.5A/DIV
VOUT
10V/DIV
CONTACT
BOUNCE
VGPIO1
10V/DIV
5k PULL-UP TO VDD
CL = 12000μF
40ms/DIV
42151 TA01b
421513fc
1


Linear Technology Electronic Components Datasheet

LTC4215-3 Datasheet

Hot Swap Controller

No Preview Available !

LTC4215-1/LTC4215-3
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
Supply Voltage (VDD) ................................ –0.3V to 24V
Supply Voltage (INTVCC) .......................... –0.3V to 6.5V
Input Voltages
GATE-SOURCE (Note 3).......................... –0.3V to 5V
SENSE+, SENSE................ VDD – 0.3V to VDD + 0.3V
SOURCE.................................................... –5V to 24V
EN, FB, ON, OV, UV ................................ –0.3V to 12V
ADR0, ADR1, TIMER,
ADIN, SS................................ –0.3V to INTVCC + 0.3V
GPIO2, GPIO3, SCL, SDA, SDAI, SDAO –0.3V to 6.5V
Output Voltages
GATE, GPIO1.......................................... –0.3V to 24V
GPIO2, GPIO3....................................... –0.3V to 6.5V
Operating Temperature Range
LTC4215C-1 ............................................. 0°C to 70°C
LTC4215I-1 .......................................... –40°C to 85°C
Storage Temperature Range
QFN.................................................... –65°C to 125°C
PIN CONFIGURATION
TOP VIEW
UV 1
OV 2
SS 3
GND 4
ON 5
EN 6
SDAO 7
24 23 22 21 20
19 FB
18 GPIO1
17 INTVCC
25 16 TIMER
15 ADIN
14 GPIO3
13 ADR1
8 9 10 11 12
UFD PACKAGE
24-LEAD (4mm × 5mm) PLASTIC QFN
TJMAX = 125°C, θJA = 34°C/W (EXPOSED PAD IS SOLDERED)
EXPOSED PAD (PIN 25) PCB GND CONNECTION OPTIONAL
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4215CUFD-1#PBF
LTC4215CUFD-1#TRPBF 42151
24-Lead (4mm × 5mm) Plastic QFN
0°C to 70°C
LTC4215IUFD-1#PBF
LTC4215IUFD-1#TRPBF 42151
24-Lead (4mm × 5mm) Plastic QFN
–40°C to 85°C
LTC4215CUFD-3#PBF
LTC4215CUFD-3#TRPBF 42153
24-Lead (4mm × 5mm) Plastic QFN
0°C to 70°C
LTC4215IUFD-3#PBF
LTC4215IUFD-3#TRPBF 42153
24-Lead (4mm × 5mm) Plastic QFN
–40°C to 85°C
LEAD BASED FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4215CUFD-1
LTC4215CUFD-1#TR
42151
24-Lead (4mm × 5mm) Plastic QFN
0°C to 70°C
LTC4215IUFD-1
LTC4215IUFD-1#TR
42151
24-Lead (4mm × 5mm) Plastic QFN
–40°C to 85°C
LTC4215CUFD-3
LTC4215CUFD-3#TR
42153
24-Lead (4mm × 5mm) Plastic QFN
0°C to 70°C
LTC4215IUFD-3
LTC4215IUFD-3#TR
42153
24-Lead (4mm × 5mm) Plastic QFN
–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.
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/
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VDD = 12V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Supplies
VDD
VOV(VDD)
Input Supply Range
Input Supply Overvoltage Threshold
l 2.9
l 15
15
15.6 16.5
V
V
IDD Input Supply Current
l
35
mA
VDD(UVL)
Input Supply Undervoltage Lockout
VDD Rising
l 2.75 2.84 2.89
V
421513fc
2


Part Number LTC4215-3
Description Hot Swap Controller
Maker Linear
Total Page 28 Pages
PDF Download

LTC4215-3 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 LTC4215-1 Hot Swap Controller
Linear Technology
2 LTC4215-2 Hot Swap Controller
Linear
3 LTC4215-3 Hot Swap Controller
Linear





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy