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LTC2928CUHF#PBF

更新时间： 2024-02-15 02:13:37
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
34页 411K
描述
LTC2928 - Multichannel Power Supply Sequencer and Supervisor; Package: QFN; Pins: 38; Temperature Range: 0°C to 70°C

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LTC2928CUHF#PBF 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：,
针数：38Reach Compliance Code：compliant
风险等级：5.77可调阈值：YES
JESD-609代码：e3湿度敏感等级：1
信道数量：4峰值回流温度（摄氏度）：260
认证状态：Not Qualified最大供电电压 (Vsup)：6 V
最小供电电压 (Vsup)：2.9 V端子面层：Matte Tin (Sn)
处于峰值回流温度下的最长时间：30

LTC2928CUHF#PBF 数据手册

 浏览型号LTC2928CUHF#PBF的Datasheet PDF文件第2页浏览型号LTC2928CUHF#PBF的Datasheet PDF文件第3页浏览型号LTC2928CUHF#PBF的Datasheet PDF文件第4页浏览型号LTC2928CUHF#PBF的Datasheet PDF文件第5页浏览型号LTC2928CUHF#PBF的Datasheet PDF文件第6页浏览型号LTC2928CUHF#PBF的Datasheet PDF文件第7页 
LTC2928  
Multichannel Power Supply  
Sequencer and Supervisor  
FeaTures  
DescripTion  
The LTC®2928 is a four channel cascadable power  
supplysequencerandhighaccuracysupervisor.Sequenc-  
ing thresholds, order and timing are configured with just a  
few external components, negating the need for PC board  
layout or software changes during system development.  
Multiple LTC2928s may be easily connected to sequence  
an unlimited number of power supplies.  
n
Easily Configure Power Management  
without Software  
n
Controls Up to Four Supplies per Device  
n
Cascades for Additional Supplies  
n
Staged Supply Sequencing with  
Adjustable Time Positions  
n
Fault Event Reporting with Diagnostics  
n
Selectable System Shutdown on Fault  
Sequence outputs control supply enable pins or  
N-channel pass gates. Precision input comparators with  
individualoutputsmonitorpowersupplyvoltagesto1.5%  
accuracy. Supervisory functions include undervoltage  
and overvoltage monitoring and reporting as well as µP  
reset generation. RST may be forced high to complement  
margin testing.  
n
1.5% Undervoltage Monitor Accuracy  
n
Overvoltage and/or Fault Indication  
n
Configurable Undervoltage and  
Overvoltage Thresholds  
n
Charge Pumped Enable Pins Drive N-Channel MOS-  
FETs  
n
Operates from 2.9V to 16.5V  
Application faults, whether internally or externally gener-  
ated, can shut down all controlled supplies. The type and  
source of faults are reported for diagnosis. Individual  
channel controls are available to independently exercise  
enable outputs and supervisory functions.  
n
5mm × 7mm 38-lead QFN and  
36-lead SSOP Packages  
applicaTions  
n
Network/Telecom Infrastructure  
Sequencing for Multiple I/O and Core Voltages  
Power Management  
n
n
A high voltage input allows the LTC2928 to be powered  
from voltages as high as 16.5V. A buffered reference  
output permits single negative power supply sequencing  
and monitoring operations.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
Protected by U.S. Patents, including 4843302, 6949965.  
Typical applicaTion  
Sequencing Up and Down  
LTM4600  
3.3V  
12V  
V
V
OUT  
RUN  
IN  
3.3V  
2.5V  
1.8V  
1.2V  
LTC3414  
10k  
1.2V  
V
IN  
V
OUT  
RUN  
LTC1628  
2.5V  
1.8V  
V
V
OUT  
RUN  
IN  
AUSTIN LYNX  
V
Si7894ADP  
1V/DIV  
V
IN  
OUT  
ON  
AXA010AY93  
100Ω  
EN2 EN1 EN4 EN3  
12.1k  
36.5k  
0.1µF  
23.2k  
51.1k  
HV  
CC  
ON  
V1  
V2  
V3  
ON  
95.3k  
24.3k  
9.53k  
1.5k  
RT1  
RT2  
RT3  
RT4  
DONE  
LTC2928  
V4  
SYSTEM  
RESET  
RST  
OV  
FLT  
3.4k  
DONE  
START  
SEQUENCE  
UP  
SEQUENCE  
DOWN  
COMPLETE  
V
FAULT  
CC  
SEQUENCE UP  
COMPLETE  
START  
SEQUENCE  
DOWN  
GND MS1 VSEL  
RTMR PTMR STMR  
0.047µF 3300pF  
1µF  
10k  
10k  
10k  
10k  
2928 TA07  
ALL RESISTORS 1%  
2928 TA06  
2928fa  
1
For more information www.linear.com/LTC2928  
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