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參數(shù)資料
| 型號： | LTC4215IUFD-2#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| 封裝： | 4 X 5 MM, LEAD FREE, PLASTIC, MO-220, QFN-24 |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 261K |
| 代理商： | LTC4215IUFD-2#TRPBF |
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LTC4215/LTC4215-2
1
4215fe
TYPICAL APPLICATION
DESCRIPTION
Hot Swap Controller with
I2C Compatible Monitoring
The LTC
4215/LTC4215-2 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 congure 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.
The LTC4215 has a 20μs circuit breaker lter for applica-
tions that require a fast fault response time and it defaults
to latchoff after an overcurrent fault. The LTC4215-2 has
an extended 420μs circuit breaker lter for applications
where supply transients may exceed 20μs and it defaults
to restart automatically after an overcurrent fault.
FEATURES
APPLICATIONS
n Live Board Insertion
n Electronic Circuit Breakers
n Computers, Servers
n Platform Management
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 20μs (LTC4215) or 420μs (LTC4215-2) Circuit
Breaker Timeout
n dI/dt Controlled Soft-Start
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 Package
n LTC4215 also available in 16-Lead Narrow SSOP
Package
+
UV VDD SENSE
+
SENSE–
LTC4215UFD
GATE
TIMER SS
ON
GND
SOURCE
OV
SDAO
SDAI
SCL
ALERT
INTVCC
FB
EN
ADIN
GPIO
3.4k
PLUG-IN
CARD
1.18k
P6KE16A
10Ω
0.005Ω
FDC653N
30.1k
VOUT
12V
3.57k
24k
4215 TA01a
CL
INTVCC
0.1μF
CONNECTOR
2
CONNECTOR
1
0.1μF
34.8k
BACKPLANE
68nF
GND
ALERT
SCL
SDA
12V
VOUT
10V/DIV
VGPIO
(POWERGOOD)
10V/DIV
INRUSH
CURRENT
2.5A/DIV
VDD
10V/DIV
50ms/DIV
42151 TA01b
CL = 12000μF
CONTACT
BOUNCE
12V Application with 5A Circuit Breaker
Start-Up Waveform
L, LT, LTC, LTM, Linear Technology, the Linear logo and Hot Swap are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patent including 7330065.
相關PDF資料 |
PDF描述 |
|---|---|
| LTC4215CUFD-2#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| LTC4215IUFD-2 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| LTC4215IUFD-3#TR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| LTC4215CUFD-3#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| LTC4215CUFD-3 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
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