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LTC3446

更新时间： 2023-12-20 18:44:00
品牌 Logo 应用领域
亚德诺 - ADI 稳压器
页数 文件大小 规格书
20页 283K
描述
具双 VLDO 稳压器的单片式降压型稳压器

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中文翻译

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LTC3446 数据手册

 浏览型号LTC3446的Datasheet PDF文件第1页浏览型号LTC3446的Datasheet PDF文件第3页浏览型号LTC3446的Datasheet PDF文件第4页浏览型号LTC3446的Datasheet PDF文件第5页浏览型号LTC3446的Datasheet PDF文件第6页浏览型号LTC3446的Datasheet PDF文件第7页 
LTC3446  
absoluTe MaxiMuM raTings  
pin conFiguraTion  
(Note 1)  
TOP VIEW  
V , LV to GND ......................................... –0.3V to 6V  
IN  
IN  
MODESEL  
1
2
3
4
5
6
7
14 SW  
MODESEL, ENBUCK, ENLDO1,  
V
13 ENBUCK  
12 BUCKFB  
11 ENLDO1  
IN  
ENLDO2 to GND.......................................... –0.3V to 6V  
BUCKFB to GND.......................................... –0.3V to 6V  
LV , LV to GND.................................... –0.3V to 6V  
I
TH  
PGOOD  
15  
LV  
10 LV  
OUT1  
FB1  
FB2  
FB1  
FB2  
LV  
9
8
LV  
IN  
I
to GND ..... –0.3V to the Lesser of (V + 0.3V) or 3V  
TH  
IN  
IN  
LV  
ENLDO2  
OUT2  
SW to GND......–0.3V to the Lesser of (V + 0.3V) or 6V  
LV  
, LV  
DE PACKAGE  
14-LEAD (4mm × 3mm) PLASTIC DFN  
OUT1  
OUT2  
to GND.......... –0.3V to the Lesser of (LV + 0.3V) or 6V  
PGOOD to GND............................................ –0.3V to 6V  
IN  
T
= 125°C, θ = 43°C/W  
JA  
JMAX  
EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB  
LV  
, LV  
Short-Circuit  
OUT1  
OUT2  
to GND Duration............................................... Indefinite  
Operating Junction Temperature Range  
(Note 2).................................................. –40°C to 125°C  
Storage Temperature Range.................. –65°C to 150°C  
orDer inForMaTion  
LEAD FREE FINISH  
LTC3446EDE#PBF  
LTC3446IDE#PBF  
TAPE AND REEL  
PART MARKING*  
3446  
PACKAGE DESCRIPTION  
14-Lead (4mm × 3mm) Plastic DFN  
14-Lead (4mm × 3mm) Plastic DFN  
TEMPERATURE RANGE  
–40°C to 125°C  
–40°C to 125°C  
LTC3446EDE#TRPBF  
LTC3446IDE#TRPBF  
3446  
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.  
Consult LTC Marketing for information on non-standard lead based finish parts.  
For more information on lead free part marking, go to: http://www.linear.com/leadfree/  
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/  
The l denotes the specifications which apply over the full operating  
elecTrical characTerisTics  
temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V unless otherwise specified. (Note 2)  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
V
V
Input Voltage Range  
(Note 3)  
●
●
2.7  
5.5  
V
IN  
V
IN  
V
IN  
Undervoltage Lockout Threshold  
Undervoltage Lockout Hysteresis  
V
IN  
Rising  
2.37  
10  
2.5  
30  
V
mV  
UVLO  
I
Q
V
Quiescent Current (Note 4)  
IN  
Buck Enabled Only, Not Sleeping  
Buck Enabled Only, Sleeping  
V
V
V
V
= 0V, I = 0mA  
310  
50  
500  
75  
µA  
µA  
µA  
µA  
BUCKFB  
BUCKFB  
LVIN  
SW  
= 1V, I = 0mA  
SW  
One LDO Enabled Only  
All Three Outputs Enabled, Buck Not Sleeping  
= 1.5V, 10µA LDO Output Load  
75  
100  
600  
= 0V, I = 0mA, V  
LVIN  
= 1.5V,  
400  
BUCKFB  
SW  
10µA Output Load on Each LDO  
All Three Outputs Enabled, Buck Sleeping  
Shutdown  
V
= 1V, I = 0mA, V  
LVIN  
= 1.5V,  
140  
210  
1
µA  
µA  
BUCKFB  
SW  
10µA Load on Each LDO  
= 0V, V = 0V, V = 0V  
ENLDO2  
V
ENBUCK  
ENLDO1  
3446ff  
2
1234567...20

中文翻译

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