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LTC295ICDDB-2-TRMPBF PDF预览

LTC295ICDDB-2-TRMPBF

更新时间： 2024-02-28 19:39:23
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
16页 428K
描述
Push Button On/Off Controller

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中文翻译

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LTC295ICDDB-2-TRMPBF 数据手册

 浏览型号LTC295ICDDB-2-TRMPBF的Datasheet PDF文件第3页浏览型号LTC295ICDDB-2-TRMPBF的Datasheet PDF文件第4页浏览型号LTC295ICDDB-2-TRMPBF的Datasheet PDF文件第5页浏览型号LTC295ICDDB-2-TRMPBF的Datasheet PDF文件第7页浏览型号LTC295ICDDB-2-TRMPBF的Datasheet PDF文件第8页浏览型号LTC295ICDDB-2-TRMPBF的Datasheet PDF文件第9页 
LTC2950-1/LTC2950-2  
(TSOT-23/DFN)  
PIN FUNCTIONS  
IN  
EN (LTC2950-2, Pin 6/Pin 7): Open Drain Enable Output.  
This pin is intended to enable system power. EN is as-  
serted low after a valid PB turn-on event. EN releases  
high if: a) KILL is not driven high (by μP) within 512ms of  
the initial valid PB power turn-on event, b) KILL is driven  
low during normal operation, c) a second valid PB event  
(power turn-off) is detected. The operating range of this  
pin is 0V to 10V.  
V (Pin 1/Pin 4): Power Supply Input: 2.7V to 26.4V.  
PB (Pin 2/Pin 3): Push Button Input. Connecting PB to  
ground through a momentary switch provides on/off  
control via the EN/EN pin. An internal 100k pull-up resis-  
tor connects to an internal 1.9V bias voltage. The rugged  
PB input can be pulled up to 26.4V externally without  
consuming extra current.  
ONT (Pin 3/Pin 2): Additional Adjustable Turn On Time  
Input. Placing an external capacitor to ground determines  
the additional time (beyond the internal default 32ms)  
the PB pin must be held low before the enable output  
is asserted. Floating this pin results in a default turn on  
debounce time of 32ms.  
OFFT (Pin 7/Pin 6): Additional Adjustable Turn Off Time  
Input. A capacitor to ground determines the additional  
time (beyond the internal default 32ms) that the PB pin  
must be held low before initiating a power down sequence  
(INT falling). Floating this pin results in a default turn off  
time of 32ms.  
GND (Pin 4/Pin 1): Device Ground.  
KILL (Pin 8/Pin 5): KILL Input. Forcing KILL low releases  
the enable output. During system turn on, this pin is  
blanked by a 512ms internal timer to allow the system to  
pull KILL high. This pin has an accurate 0.6V threshold  
and can be used as a voltage monitor input.  
INT(Pin5/Pin8):OpenDrainInterruptOutput. Afterapush  
buttonturn-offeventisdetected,theLTC2950interruptsthe  
system (μP) by bringing the INT pin low. Once the system  
finishes its power down and housekeeping tasks, it sets  
KILL low, which in turn releases the enable output. If at the  
endofthepowerdowntimer(1024ms)KILLisstillhigh,the  
enable output is released immediately. INT may optionally  
be tied to KILL to release the enable output immediately  
after the turn-off event has been detected (INT = low).  
Exposed Pad (Pin 9): Exposed Pad may be left open or  
connected to device ground.  
EN (LTC2950-1, Pin 6/Pin 7): Open Drain Enable Output.  
This pin is intended to enable system power. EN is as-  
serted high after a valid PB turn on event. EN is released  
low if: a) KILL is not driven high (by μP) within 512ms of  
the initial valid PB power turn-on event, b) KILL is driven  
low during normal operation, c) a second valid PB event  
(power turn-off) is detected. The operating range for this  
pin is 0V to 10V.  
295012fb  
6
1...3456789...16

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