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LTC2954ITS8-2 PDF预览

LTC2954ITS8-2

更新时间: 2024-02-05 10:05:06
品牌 Logo 应用领域
凌特 - Linear 微处理器控制器
页数 文件大小 规格书
16页 582K
描述
Push Button On/Off Controller with μP Interrupt

LTC2954ITS8-2 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:VSSOP,
针数:8Reach Compliance Code:compliant
风险等级:5.24Samacsys Description:Supervisory Circuits Push Button On/Off Controller with U Interrupt for Menu Driven Applications
可调阈值:YES模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码:R-PDSO-G8JESD-609代码:e3
长度:2.9 mm湿度敏感等级:1
信道数量:1功能数量:1
端子数量:8最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:VSSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1 mm
最大供电电压 (Vsup):26.4 V最小供电电压 (Vsup):2.7 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
宽度:1.625 mm

LTC2954ITS8-2 数据手册

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LTC2954  
Push Button On/Off  
Controller with μP Interrupt  
FEATURES  
DESCRIPTIO  
The LTC®2954 is a push button On/Off controller that  
manages system power via a push button interface. An  
enable output toggles system power while an interrupt  
output provides debounced push button status. The inter-  
rupt output can be used in menu driven applications to  
request a system power down. A power kill input allows  
a microprocessor or system to reset the enable output,  
effectively powering down the system. Independently ad-  
justable On and Off timers allow dependable push button  
control of the enable output and resistance to accidental  
toggling of system power.  
Adjustable Power On/Off Timers  
Low Supply Current: 6µA  
Wide Operating Voltage Range: 2.7V to 26.4V  
Low Leakage EN Output (LTC2954-1) Allows DC/DC  
Converter Control  
High Voltage EN Output (LTC2954-2) Allows Circuit  
Breaker Control  
Simple Interface Allows Graceful µP Shut Down  
High Input Voltage PB Pin with Internal Pull Up  
Resistor  
±10kV ESD HBM on PB Input  
Accurate 0.6V Threshold on KILL Comparator Input  
The LTC2954 operates over a wide 2.7V to 26.4V input  
voltagerangetoaccommodateawidevarietyofinputpower  
supplies. Very low quiescent current (6µA typical) makes  
theLTC2954ideallysuitedforbatterypoweredapplications.  
Two versions of the part are available to accommodate  
either positive or negative enable polarities.  
8-Pin 3mm × 2mm DFN and ThinSOTTM Packages  
APPLICATIO S  
Push Button Power Path Control  
Portable Instrumentation Meters  
Blade Servers  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners.  
Portable Customer Service PDA  
Desktop and Notebook Computers  
U
TYPICAL APPLICATIO  
Push Button On/Off with Interrupt  
V
IN  
V
OUT  
SHORT PULSE  
TURN ON PULSE  
LONG PULSE  
DC/DC  
+
PB  
EN  
100k  
100k  
9V  
TURNS ON  
STAYS ON  
TURNS OFF  
INTERRUPT  
10k  
V
EN  
IN  
LTC2954-2  
ONT  
INT  
INT  
INT  
µP/µC  
INTERRUPT  
KILL  
PDT  
KILL  
PB  
2954 TD01b  
GND  
2954 TA01  
1µF  
t
= 6.4 SECONDS  
PDT  
2954f  
1

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