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LTC4215 Datasheet(数据表) 1 Page - Linear Technology

部件型号  LTC4215
说明  Hot Swap Controller with I2C Compatible Monitoring
下载  24 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC4215 Datasheet(HTML) 1 Page - Linear Technology

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LTC4215
1
4215fb
Hot Swap Controller with
I2C Compatible Monitoring
Live Board Insertion
Electronic Circuit Breakers
Computers, Servers
Platform Management
Allows Safe Insertion into Live Backplane
8-Bit ADC Monitors Current and Voltage
I2C/SMBus Interface
Wide Operating Voltage Range: 2.9V to 15V
dI/dt Controlled Soft-Start
High Side Drive for External N-Channel MOSFET
No External Gate Capacitor Required
Input Overvoltage/Undervoltage Protection
Optional Latchoff or Auto-Retry After Faults
Alerts Host After Faults
Inrush Current Limit with Foldback
Available in 24-Lead (4mm
x 5mm) QFN and
16-Lead Narrow SSOP Packages
APPLICATIO S
FEATURES
DESCRIPTIO
TYPICAL APPLICATIO
+
UV VDD SENSE
+
SENSE
LTC4215UFD
GATE
TIMER SS
ON
GND
SOURCE
OV
SDAO
SDAI
SCL
ALERT
INTVCC
FB
EN
ADIN
GPIO
2.67k
PLUG-IN
CARD
1.74k
20V
10
0.005
FDC653N
30.1k
VOUT
12V
3.57k
24k
4215 TA01a
CL
0.1
µF
0.1
µF
34k
BACKPLANE
68nF
GND
ALERT
SCL
SDA
12V
The LTC®4215 Hot SwapTM controller allows 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 detects a current
limit fault.
The controller has additional features to interrupt the host
when a fault has occurred, 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.
4215 TA01b
CL = 12000µF
50ms/DIV
VDD
10V/DIV
VOUT
10V/DIV
VGPIO
(POWERGOOD)
10V/DIV
INRUSH
CURRENT
2.5A/DIV
CONTACT
BOUNCE
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Hot Swap is a registered trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.




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