參數(shù)資料
型號： LTC4230IGN#PBF
廠商： Linear Technology
文件頁數(shù)： 1/36頁
文件大?。?/td> 384K
描述： IC CONTRLLR HOT SWAP TRPL 20SSOP
標準包裝： 55
類型： 熱交換控制器
應用： 通用
內部開關： 無
電源電壓： 1.7 V ~ 16.5 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 20-SSOP（0.154"，3.90mm 寬）
供應商設備封裝： 20-SSOP
包裝： 管件
1
LTC4230
 4230f
s
Allows Safe Board Insertion and Removal
from a Live Backplane
s
Controls Three Supply Voltages from 1.7V to 16.5V
with V
CC1
 e V
CC2
 e V
CC3
s
Programmable Soft-Start with Inrush Current
Limiting, No External Gate Capacitor Required
s
Faster Turn-Off Time with No Gate Capacitor
s
Dual Level Overcurrent Fault Protection
s
Programmable Overcurrent Response Time
s
Programmable Overvoltage Protection
s
Automatic Retry or Latched Mode Operation
s
Independent N-Channel FET High Side Drivers
s
User-Programmable Supply Voltage Power-Up Rate
s
FBn Pin Monitors V
OUTn
 and Signals RESETn
s
Glitch Filter Eliminates Spurious RESETn Signals
The LTC
?/DIV>
4230 is a 3-channel Hot Swap
TM
 controller that
allows a board to be safely inserted and removed from a
live backplane. Internal high side switch drivers control
the gates of external N-channel MOSFETs for supply
voltages ranging from 1.7V to 16.5V. The LTC4230 pro-
vides soft-start and inrush current limiting during the
programmable start-up period.
On-chip current limit comparators provide dual level
circuit breaker protection. The slow comparators trip at
V
CCn
  50mV and activate in 10祍 or are programmed by
an external filter capacitor. The fast comparators trip at
V
CCn
  150mV and typically respond in 500ns.
Each FBn pin monitors its own output supply voltage and
signals its RESET pin. The ON pin turns the chip on and
off and can be used for a reset function. The LTC4230 also
provides additional functions including fault indication,
autoretry or latchoff modes, programmable current limit
response time based on the FAULT and FILTER pins
functionality.
s
Electronic Circuit Breaker
s
Hot Board Insertion and Removal (Either On
Backplane or On Removable Card)
s
Industrial High Side Switch/Circuit Breaker
Triple Hot Swap Controller
with Multifunction Current Control
, LTC and LT are registered trademarks of Linear Technology Corporation.
3-Channel Hot Swap Controller
Hot Swap is a trademark of Linear Technology Corporation.
R
SENSE2
0.007&
CX2
100nF
CX1
100nF
RX2
10&
Q2
IRF7413
V
CC1
ON
FAULT
GND
LTC4230
15
6
7
8
16
17
18
5
4
3
FB3
1
13
14
12
11
SENSE 1   GATE 1   V
CC2
SENSE 2   GATE 2
SENSE 3  GATE 3
V
CC3
RESET 3
2
R
SENSE3
0.007&
RX1
10&
R8
5.1k
R9
12k
Q3
IRF7413
V
OUT1
3.3V
5A
V
OUT2
2.5V
5A
V
OUT3
1.8V
5A
R
SENSE1
0.007&
CX3
100nF
RX3
10&
C
TIMER
*
0.1礔
C
FILTER
**
15pF
Q1
IRF7413
Z3***
Z2***
Z1***
* SYSTEM ON TIME: 6.2ms
**CIRCUIT BREAKER RESPONSE TIME: 19.5祍
***OPTIONAL
Z1, Z2, Z3: SMAJ10
RESET 2
19
FB2
20
R7
10k
RESET 1
9
FB1
10
R10
11k
R11
12k
R6
10k
R12
18k
R13
12k
4230 TA01
R5
10k
PCB EDGE
CONNECTOR
(MALE)
BACKPLANE
CONNECTOR
(FEMALE)
V
CC1
3.3V
LONG
V
CC2
2.5V
LONG
V
CC3
1.8V
LONG
SHORT
FAULT
GND
LONG
SHORT
R2
10k
R1
10k
PCB CONNECTION SENSE
RESET 3
TIMER
FILTER
RESET 2
RESET 1
APPLICATIO S
FEATURES
TYPICAL APPLICATIO
DESCRIPTIO
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