- 您现在的位置：买卖IC网 > PDF目录19841 > LTC4221CGN#PBF (Linear Technology)IC CTLR HOT SWAP DUAL 16SSOP PDF资料下载
参数资料
| 型号： | LTC4221CGN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 23/28页 |
| 文件大小： | 272K |
| 描述： | IC CTLR HOT SWAP DUAL 16SSOP |
| 标准包装： | 100 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | 1 V ~ 13.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 管件 |
| 产品目录页面： | 1342 (CN2011-ZH PDF) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页当前第23页第24页第25页第26页第27页第28页
23
LTC4221
4221fa
the input supply line, exhibiting a peak overshoot to 2.5
times the steady-state value. This peak is followed by a
damped sinusoidal response whose duration and period
are dependent on the resonant circuit parameters. This
can cause detrimental damage to board components
unless measures are taken.
The energy stored in the lead/trace inductance is easily
controlled with snubbers and/or transient voltage sup-
pressors. Even when ferrite beads are used for electro-
magnetic interference (EMI) control, the low saturating
current of ferrite will not pose a major problem if the
transient voltage suppressors with adequate ratings are
used. The transient associated with a GATE turn off can be
controlled with a snubber and/or transient voltage sup-
pressor. Snubbers such as RC networks are effective
especially at low voltage supplies. The choice of RC is
usually determined experimentally. The value of the snub-
ber capacitor is usually chosen between 10 to 100 times
the MOSFET C
OSS
. The value of the snubber resistor is
typically between 3?to 100? When the supply exceeds
7V or EMI beads exist in the wire harness, a transient
voltage suppressor and snubber are recommended to clip
off large spikes and reduce the ringing. For supply volt-
ages of 6V or below, a snubber network should be suffi-
cient to protect against transient voltages. These protection
networks should be mounted very close to each of
LTC4221s two supply voltages using short lead lengths to
minimize lead inductance. This is shown schematically in
the Typical Application on the front page of this data sheet.
In many cases, a simple short-circuit test can be per-
formed to determine the need of the transient voltage
suppressor. Additional overvoltage protection is provided
by the FBn pins.
APPLICATIO S I FOR ATIO
U
U
U
PCB Layout Considerations
A recommended layout for the SENSE resistors, the
power MOSFETs, V
CC
transient protection devices and
GATE drive components around the LTC4221 is shown in
Figure 16. For proper operation of the LTC4221s elec-
tronic circuit breaker, a 4-wire Kelvin connection to each
SENSE resistor is used. Also, PCB layout for the external
N-channel MOSFETs emphasizes optimal thermal man-
agement of MOSFET power dissipation to keep ?/DIV>
JA
as low
as possible. The V
CC
transient protection devices are
positioned close to the supply pins to reduce lead induc-
tance and thus overshoot voltage.
In Hot Swap applications where load currents can reach
10A or more, PCB track width must be appropriately sized
to keep track resistance and temperature rise to a mini-
mum. Consult Appendix A of LTC Application Note 69 for
details on sizing and calculating trace resistances as a
function of copper thickness.
In the majority of applications, it will be necessary to use
plated-through vias to make circuit connections from
component layers to power and ground layers internal to
the PC board. For 1oz copper foil plating, a good starting
point is 1A of DC current per via, making sure the via is
properly dimensioned so that solder completely fills any
void. For other plating thicknesses, check with your PCB
fabrication facility.
相关PDF资料 |
PDF描述 |
|---|---|
| 7-1734857-5 | PCI EXP STRADDLE 98P BLK 30U" |
| GSC49DRYN | CONN EDGECARD 98POS DIP .100 SLD |
| LTM8052IV#PBF | IC UMODULE CVCC STEP DOWN 81LGA |
| VE-JW3-CW-B1 | CONVERTER MOD DC/DC 24V 100W |
| GMM36DTBN-S664 | CONN EDGECARD 72POS R/A .156 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4221IGN | 功能描述:IC CTRLR HOTSWAP DUAL 16SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| LTC4221IGN#PBF | 功能描述:IC CTRLR HOTSWAP DUAL 16SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| LTC4221IGN#TR | 功能描述:IC CTRLR HOTSWAP DUAL 16SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| LTC4221IGN#TRPBF | 功能描述:IC CTRLR HOTSWAP DUAL 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| LTC4222 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Hot Swap Controller |
发布紧急采购，3分钟左右您将得到回复。