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LTC2928IUHF#TR PDF预览

LTC2928IUHF#TR

更新时间： 2024-02-25 05:10:36
品牌 Logo 应用领域
凌特 - Linear 监控
页数 文件大小 规格书
32页 735K
描述
LTC2928 - Multichannel Power Supply Sequencer and Supervisor; Package: QFN; Pins: 38; Temperature Range: -40°C to 85°C

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LTC2928IUHF#TR 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：5.11Is Samacsys：N
可调阈值：YESJESD-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
Base Number Matches：1

LTC2928IUHF#TR 数据手册

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LTC2928  
Multichannel Power Supply  
Sequencer and Supervisor  
U
DESCRIPTIO  
FEATURES  
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.  
■
Easily Configure Power Management  
without Software  
■
Controls Up to Four Supplies per Device  
■
Cascades for Additional Supplies  
■
Staged Supply Sequencing with  
Adjustable Time Positions  
■
Fault Event Reporting with Diagnostics  
■
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.  
■
1.5% Undervoltage Monitor Accuracy  
■
Overvoltage and/or Fault Indication  
■
Configurable Undervoltage and  
Overvoltage Thresholds  
■
Charge Pumped Enable Pins Drive N-Channel  
MOSFETs  
■
Operates from 2.9V to 16.5V  
Application faults, whether internally or externally gener-  
ated, can shutdown 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.  
■
5mm × 7mm 38-lead QFN and  
36-lead SSOP Packages  
U
APPLICATIO S  
■
Network/Telecom Infrastructure  
■
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.  
Sequencing for Multiple I/O and Core Voltages  
■
Power Management  
, LT, LTC and LTM 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.  
U
TYPICAL APPLICATIO  
Sequencing Up and Down  
LTM4600  
3.3V  
12V  
V
V
IN  
OUT  
RUN  
3.3V  
2.5V  
1.8V  
1.2V  
LTC3414  
V
10k  
1.2V  
V
IN  
OUT  
RUN  
LTC1628  
2.5V  
1.8V  
V
V
OUT  
RUN  
IN  
AUSTIN LYNX  
Si7894ADP  
100  
1V/DIV  
V
V
IN  
OUT  
ON  
AXA010AY93  
12.1k  
36.5k  
0.1  
F
23.2k  
51.1k  
HV  
EN2 EN1 EN4 EN3  
CC  
ON  
V1  
V2  
V3  
V4  
RST  
OV  
ON  
95.3k  
24.3k  
9.53k  
1.5k  
RT1  
RT2  
RT3  
RT4  
DONE  
LTC2928  
SYSTEM  
RESET  
3.4k  
DONE  
START  
SEQUENCE  
UP  
SEQUENCE  
DOWN  
COMPLETE  
V
FLT  
FAULT  
CC  
SEQUENCE UP  
COMPLETE  
START  
SEQUENCE  
DOWN  
GND MS1 VSEL  
RTMR PTMR STMR  
3300pF  
1
F
10k  
10k  
10k  
10k  
0.047  
ALL RESISTORS 1%  
F
2928 TA07  
2928 TA06  
2928f  
1
1234567...32

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