參數(shù)資料
型號(hào): LTC4211IS8#TR
廠(chǎng)商: Linear Technology
文件頁(yè)數(shù): 1/40頁(yè)
文件大?。?/td> 321K
描述: IC CONTROLLER HOT SWAP 8-SOIC
標(biāo)準(zhǔn)包裝: 2,500
類(lèi)型: 熱交換控制器
應(yīng)用: 通用
內(nèi)部開(kāi)關(guān): 無(wú)
電源電壓: 2.5 V ~ 16.5 V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SOIC
包裝: 帶卷 (TR)
其它名稱(chēng): LTC4211IS8TR
LTC4211
1
4211fb
TYPICAL APPLICATION
FEATURES
DESCRIPTION
Hot Swap Controller with
Multifunction Current Control
APPLICATIONS
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Hot Swap
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
n
  Allows Safe Board Insertion and Removal 
   from a Live Backplane
n
  Controls Supply Voltages from 2.5V to 16.5V
n
  Programmable Soft-Start with Inrush Current  
 
Limiting, No External Gate Capacitor Required
n
  Faster Turn-Off Time Because No External Gate       
Capacitor is Required
n
  Dual Level Overcurrent Fault Protection
n
  Programmable Response Time for Overcurrent       
Protection (MS)
n
  Programmable Overvoltage Protection (MS)
n
  Automatic Retry or Latched Mode Operation (MS)
n
  High Side Drive for an External N-Channel FET
n
  User-Programmable Supply Voltage Power-Up Rate
n
  FB Pin Monitors V
OUT
 and Signals RESET
n
  Glitch Filter Protects Against Spurious RESET Signal
n
  Electronic Circuit Breaker
n
  Hot Board Insertion and Removal (Either On
Backplane or On Removable Card)
n
  Industrial High Side Switch/Circuit Breaker
The LTC
?/DIV>
4211 is a Hot Swap" controller that allows a board
to be safely inserted and removed from a live backplane.
An internal high side switch driver controls the gate of an
external N-channel MOSFET for supply voltages ranging
from 2.5V to 16.5V. The LTC4211 provides soft-start and
inrush current limiting during the start-up period which
has a programmable duration.
Two on-chip current limit comparators provide dual level
overcurrent circuit breaker protection. The slow com-
parator trips at V
CC
  50mV and activates in 20約 (or is
programmed by an external filter capacitor, MS only).
The fast comparator trips at V
CC
  150mV and typically
responds in 300ns.
The FB pin monitors the output supply voltage and signals
the RESET output pin. The ON pin signal turns the chip on
and off and can also be used for the reset function. The
MS package has FAULT and FILTER pins to provide addi-
tional functions like fault indication, autoretry or latch-off
modes, programmable current limit response time and
programmable overvoltage protection using an external
Zener diode clamp.
Single Channel 5V Hot Swap Controller
Power-Up Sequence
+
V
CC
SENSE
LTC4211
8
2
3
4
7
6
C
LOAD
V
OUT
5V
5A
GND
4211 TA01A
5
1
R4
15k
GATE
GND
TIMER
PCB CONNECTION SENSE
C
TIMER
10nF
FB
ON
SHORT
LONG
V
CC
5V
GND
LONG
Z1 = 1SMA10A OR SMAJ10A
* OPTIONAL
RESET
R2
10k
R1
20k
R
X
10?/DIV>
R
SENSE
0.007?/DIV>
PCB EDGE
CONNECTOR
(MALE)
M1
Si4410DY
Z1*
R3
36k
R5
10k
LOGIC
RESET
C
X
100nF
BACKPLANE
CONNECTOR
(FEMALE)
4211 TA01b
2.5ms/DIV
NO C
LOAD
V
GATE
5V/DIV
V
RESET
5V/DIV
V
ON
1V/DIV
V
TIMER
1V/DIV
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