1
LTC1642
1642fb
Hot Swap Controller
The LTC
?/DIV>
1642 is a 16-pin Hot Swap
TM
 
controller that
allows a board to be safely inserted and removed from a
live backplane. Using an external N-Channel pass transis-
tor, the board supply voltage can be ramped up at an
adjustable rate. A high side switch driver controls the
N-Channel gate for supply voltages above 2.97V.
The SENSE pin allows foldback limiting of the load current,
with circuit breaker action after an adjustable delay time.
The delay allows the part to power-up in current limit. The
CRWBR output can be used to trigger an SCR for crowbar
protection of the load if the input supply exceeds an
adjustable threshold. The RESET output can generate a
system reset with adjustable delay when the supply
voltage falls below an adjustable threshold. The ON
pin cycles the board power. The LTC1642 is available in
the 16-pin SSOP package.
?/DIV>
Adjustable Undervoltage and Overvoltage
Protection
?/DIV>
Foldback Current Limit
?/DIV>
Adjustable Current Limit Time-Out
?/DIV>
Protected Against Surges to 33V
?/DIV>
Single Channel NFET Driver
?/DIV>
Latch Off or Automatic Retry on Current Fault
?/DIV>
Driver for SCR Crowbar on Overvoltage
?/DIV>
Adjustable Reset Timer
?/DIV>
Reference Output with Uncommitted Comparator
?/DIV>
16-Pin SSOP Package
?/DIV>
Hot Board Insertion
?/DIV>
Electronic Circuit Breaker
?/DIV>
InfiniBand
TM
 Systems
1N4705
18V
12V
BACKPLANE
(SHORT PIN)
PLUG-IN CARD
V
CC
SENSE
GATE
GND  BRK TMR
LTC1642
RST TMR
ON
FAULT
OV
RESET
FB
CRWBR
COMP
+
COMP

0.33礔
0.33礔
2N2222
MCR
12DC
REF
0.1礔
2.87k
1%
110k
1%
100&
5%
107k
1%
13k
1%
FDS6630A
0.01礔
0.047礔
C
LOAD
12V
AT 2.5A
330&
5%
0.010&
5%
11.3k
1%
POWER-GOOD = 11.4V
1642 TA01
+
COMPOUT
GND
UV = 10.8V
OV = 13.2V
APPLICATIO S
FEATURES
TYPICAL APPLICATIO
DESCRIPTIO
, LTC and LT 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.
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LTC1642IGN#PBF 功能描述:IC CONTROLLER HOTSWAP ADJ 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型,PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V,12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP(12x12) 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF)
LTC1642IGN#TR 功能描述:IC CONTROLLER HOTSWAP ADJ 16SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型,PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V,12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP(12x12) 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF)
LTC1642IGN#TRPBF 功能描述:IC CONTROLLER HOTSWAP ADJ 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型,PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V,12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP(12x12) 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF)
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LTC1643AHCGN#PBF 功能描述:IC CTRLR HOTSWAP PCI BUS 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型,PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V,12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP(12x12) 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF)
LTC1643AHCGN#TR 功能描述:IC CTRLR HOTSWAP PCI BUS 16SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型,PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V,12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP(12x12) 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF)
LTC1643AHCGN#TRPBF 功能描述:IC CTRLR HOTSWAP PCI BUS 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型,PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V,12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP(12x12) 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF)