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LTC4222
1
4222fb
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Dual Hot Swap Controller
with I
2
C Compatible
Monitoring
The LTC
?/DIV>
4222 Hot Swap" controller allows two power
paths to be safely inserted and removed from a live back-
plane. Using external N-channel pass transistors, board
supply voltages and inrush currents are ramped up at an
adjustable rate. An I
2
C interface and onboard ADC allows
for monitoring of current, voltage and fault status for
each channel.
The device features adjustable, analog, foldback current
limit circuits and a soft-start circuit that sets the dI/dt of
the inrush currents. An I
2
C interface may configure the
part to latch off or automatically restart after the LTC4222
detects a fault on either channel.
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 I
2
C command
to turn on.
Advanced Mezzanine Card Application
n
  Allows Safe Insertion Into a Live Backplane
n
  10-Bit ADC Monitors Currents and Voltages
n
  I
2
C/SMBus Interface
n
  Wide Operating Voltage Range: 2.9V to 29V
n
  dI/dt Controlled Soft-Start
n
  High Side Drive for External N-Channel MOSFETs
n
  No External Gate Capacitors Required
n
  Input Overvoltage/Undervoltage Protection
n
  Optional Latchoff or Auto-Retry After Faults
n
  Alert Host After Faults
n
  Inrush Current Limit with Foldback
n
  Available in 32-Pin (5mm ?5mm) QFN
and 36-Pin SSOP Packages
n
  Live Board Insertion
n
  Electronic Circuit Breakers
n
  Computers, Servers
n
  Platform Management
UV1  V
DD1
SENSE1

LTC4222
GATE1
INTV
CC
ADR2
ADR1
NC
ADR0
CONFIG
SOURCE1
UV2  V
DD2
12V
7.4A
3.3V
150mA
AUXPGOOD
12PGOOD
SENSE2

GATE2  SOURCE2
OV1
OV2
ALERT
SCL
SDA
ON
FB1
ADIN1
TIMER
GPIO1
EN1
SS
10
68nF
6m
Si7336ADP
10.2k
3.57k
10k
4222 TA01a
0.1礔
34k
1.02k
3.4k
GND
ALERT
SCL
ON
SDA
12V
ADIN2
FB2
GPIO2
EN2
0.1礔
10
300m
Si1046R
4.99k
3.57k
10k
0.1礔
6.55k
1.02k
3.4k
3.3V
PLUG-IN
CARD
BACKPLANE
1礔
10nF
Start-Up Waveform with Sequencing
V
OUT2
10V/DIV
V
OUT1
10V/DIV
GPIO
PGOOD
10V/DIV
V
IN1/2
10V/DIV
4222 TA01b
50ms/DIV
CONTACT
BOUNCE
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. Protected by U.S. Patents including 7330065.
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相关PDF资料
LTC4223CDHD-2#PBF IC CNTRLR HOT SWAP DUAL 16-DFN
LTC4224IDDB-2#TRPBF IC CNTRLR HOT SWAP DUAL 10-DFN
LTC4225IGN-1#PBF IC CONTROLLER HOT SWAP 24-SSOP
LTC4230CGN#TRPBF IC CONTRLLR HOT SWAP TRPL 20SSOP
LTC4232CDHC#TRPBF IC CTLR HOT SWAP 5A 16-DFN
LTC4240IGN#TRPBF IC CTRLR HOTSWAP CPCI I2C 28SSOP
LTC4241IGN#PBF IC CTRLR HOTSWAP 3.3V AUX 20SSOP
LTC4242CUHF#TRPBF IC CNTRLR HOT SWAP 38-QFN
相关代理商/技术参数
LTC4222CG#TRPBF 功能描述:IC CTRLR DUAL HOT SWAP 36-SSOP 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)
LTC4222CG-TRPBF 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Hot Swap Controller with I2C Compatible Monitoring
LTC4222CUH#PBF 功能描述:IC CTRLR DUAL HOT SWAP 32-QFN 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)
LTC4222CUH#TRPBF 功能描述:IC CTRLR DUAL HOT SWAP 32-QFN 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)
LTC4222CUH-PBF 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Hot Swap Controller with I2C Compatible Monitoring
LTC4222CUH-TRPBF 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Hot Swap Controller with I2C Compatible Monitoring
LTC4222IG#PBF 功能描述:IC CTRLR DUAL HOT SWAP 36-SSOP 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)
LTC4222IG#TRPBF 功能描述:IC CTRLR DUAL HOT SWAP 36-SSOP 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)