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LTC2918CMS-B1#PBF PDF预览

LTC2918CMS-B1#PBF

更新时间： 2024-01-01 22:25:18
品牌 Logo 应用领域
凌特 - Linear 输入元件光电二极管
页数 文件大小 规格书
16页 171K
描述
LTC2918 - Voltage Supervisor with 27 Selectable Thresholds and Watchdog Timer; Package: MSOP; Pins: 10; Temperature Range: 0°C to 70°C

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LTC2918CMS-B1#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：MSOP包装说明：TSSOP, TSSOP10,.19,20
针数：10Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.09其他特性：MANUAL RESET INPUT
可调阈值：YES模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码：S-PDSO-G10JESD-609代码：e3
长度：3 mm湿度敏感等级：1
信道数量：1功能数量：1
端子数量：10最高工作温度：70 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP10,.19,20
封装形状：SQUARE封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260电源：2.5 V
认证状态：Not Qualified座面最大高度：1.1 mm
子类别：Power Management Circuits最大供电电流 (Isup)：0.08 mA
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：1.5 V
标称供电电压 (Vsup)：2.5 V表面贴装：YES
技术：CMOS温度等级：COMMERCIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3 mm
Base Number Matches：1

LTC2918CMS-B1#PBF 数据手册

 浏览型号LTC2918CMS-B1#PBF的Datasheet PDF文件第4页浏览型号LTC2918CMS-B1#PBF的Datasheet PDF文件第5页浏览型号LTC2918CMS-B1#PBF的Datasheet PDF文件第6页浏览型号LTC2918CMS-B1#PBF的Datasheet PDF文件第8页浏览型号LTC2918CMS-B1#PBF的Datasheet PDF文件第9页浏览型号LTC2918CMS-B1#PBF的Datasheet PDF文件第10页 
LTC2917/LTC2918  
TYPICAL PERFORMANCE CHARACTERISTICS  
RST Pull-Down Current vs VCC  
RST VOL vs IRST  
RST Output Voltage vs VCC  
1.0  
6
5
6
5
NO PULL-UP R  
10k PULL-UP R TO V  
SEL1 = SEL2 = TOL = 0V  
VM = 0.5V  
CC  
V
= 2.5V  
CC  
0.8  
0.6  
T
= 125°C  
A
4
3
4
3
RST AT 150mV  
RST AT 50mV  
T
= 25°C  
A
0.4  
0.2  
0
2
1
0
2
1
0
T
= –40°C  
A
0
2
4
I
6
8
10  
0
1
2
3
4
5
0
1
2
3
4
5
SUPPLY VOLTAGE, V (V)  
(mA)  
RST  
SUPPLY VOLTAGE, V (V)  
CC  
CC  
29178 G12  
29178 G10  
29178 G11  
PIN FUNCTIONS  
GND: Device Ground.  
that the part is out of under voltage lockout and that the  
voltagethresholdsareaccurate. Operatesasadirectsupply  
input for voltages up to 5.5V. Operates as a shunt regulator  
for supply voltages greater than 5.7V and should have a  
MR (LTC2918 only): Manual Reset Input (Active Low). A low  
level on the MR input causes the part to issue a reset, which  
is released one reset timeout after the input goes high. The pin  
has an internal 100k pull-up to V , and thus may interface  
directly to a momentary pushbutton. Leave open if unused.  
resistor between this pin and the supply to limit V input  
CC  
CC  
current to no greater than 5mA. When used without a cur-  
rent-limiting resistor, pin voltage must not exceed 5.7V.  
RST: Open Drain RST Output. Asserts low when VM is  
belowthethresholdselectedbySEL1,SEL2andTOLinput  
pins. Held low for an adjustable timeout after VM input is  
above threshold.  
VM:VoltageMonitorInputtoRSTcomparator.SEL1,SEL2  
and TOL inputs select the exact threshold that asserts the  
RST output.  
WDI: Watchdog Input. This pin must be driven to change  
state within a time less than the watchdog upper bound-  
ary time, or RST will be asserted low. On the LTC2917-B,  
LTC2918-B, the period must also be greater than the  
watchdog lower boundary time, and only falling edges  
are considered. Tie WT and WDI to GND to disable the  
watchdog timer.  
RT: Reset Timeout Control Pin. Attach an external capacitor  
RT  
(C ) to GND to set a reset timeout of 9ms/nF. Leave RT open  
togeneratearesettimeoutofapproximately400μs. TieRTto  
V
CC  
to generate a reset timeout of approximately 200ms.  
SEL1, SEL2: Monitor Voltage Select Three-State Input.  
SEL1, and SEL2 control the nominal threshold voltage  
that VM is set to monitor. Connect to V , GND or leave  
CC  
WT: Watchdog Timer Control Pin. Attach an external  
unconnected in open state. (See Table 1).  
capacitor (C ) to GND to set a watchdog upper bound-  
WT  
TOL(LTC2917only):Three-StateInputforSupplyTolerance  
ary timeout time of 72ms/nF. Tie WT to V to generate a  
CC  
Selection (–5%, –10% or –15%). Controls the tolerance  
timeoutofapproximately1.6s. LeaveWTopentogenerate  
atimeoutofapproximately3.2ms.TieWTandWDItoGND  
to disable the watchdog timer.  
band at which the VM supply is monitored. Connect to V ,  
CC  
GND, or leave unconnected in open state. (See Table 2)  
V : Power Supply input. Bypass this pin to ground with a  
Exposed Pad (DFN Only): Exposed Pad may be left open  
CC  
0.1μFceramiccapacitor.Aminimumof1.5VonV ensures  
or connected to device ground.  
CC  
29178fb  
7
1...45678910...16

中文翻译

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