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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14页浏览型号LTC3446的Datasheet PDF文件第15页浏览型号LTC3446的Datasheet PDF文件第16页浏览型号LTC3446的Datasheet PDF文件第17页浏览型号LTC3446的Datasheet PDF文件第18页浏览型号LTC3446的Datasheet PDF文件第19页 
LTC3446  
Typical applicaTion  
L1  
1.8µH  
V
OUT  
V
IN  
2.9V TO 5.5V  
V
SW  
1.8V  
IN  
22µF  
X7R  
22µF  
X7R  
400mA MAX  
59k  
BUCKFB  
47.5k  
LTC3446  
LV  
IN  
V
OUT  
PGOOD LV  
MODESEL  
ENBUCK  
ENLDO1  
ENLDO2  
1.5V  
OUT1  
2.2µF  
X7R  
300mA MAX  
DIGITAL  
CONTROL  
110k  
LV  
FB1  
40.2k  
3.3k  
V
OUT  
I
LV  
OUT2  
1.2V  
TH  
2.2µF  
X7R  
300mA MAX  
1000pF  
80.6k  
40.2k  
LV  
FB2  
GND  
3446 TA02  
L1: TOKO A960AW-1R8M  
relaTeD parTs  
PART NUMBER  
DESCRIPTION  
COMMENTS  
V : 1.8V to 20V, V  
LT3023  
Dual, 2x100mA,  
Low Noise Micropower LDO  
= 1.22V, V = 0.30V, I = 40µA, I < 1µA,  
IN  
OUT(MIN)  
DO  
Q
SD  
V
= ADJ, DFN, MS Packages, Low Noise < 20µV  
, Stable with  
OUT  
RMS(P-P)  
1µF Ceramic Capacitors  
LT3024  
Dual, 100mA/500mA,  
Low Noise Micropower LDO  
V : 1.8V to 20V, V  
= 1.22V, V = 0.30V, I = 60µA, I < 1µA,  
IN  
OUT(MIN)  
DO  
Q
SD  
V
= ADJ, DFN, TSSOP Packages, Low Noise < 20µV  
, Stable with  
OUT  
RMS(P-P)  
1µF Ceramic Capacitors  
LTC3025  
300mA, Micropower VLDO  
Linear Regulator  
V : 0.9V to 5.5V, V  
= 0.4V, 2.7V to 5.5V Bias Voltage Required,  
OUT(MIN)  
IN  
V
= 45mV, I = 50µA, I < 1µA, V  
= ADJ, DFN Packages, Stable with  
DO  
Q
SD  
OUT  
1µF Ceramic Capacitors  
LTC3407  
LTC3407-2  
LTC3445  
Dual Synchronous 600mA  
1.5MHz Constant Frequency Current Mode Operation, V from 2.5V to  
IN  
Synchronous Step-Down DC/DC Regulator 5.5V, V  
Down to 0.6V, DFN, MS Packages  
OUT  
Dual Synchronous 800mA Synchronous  
Step-Down DC/DC Regulator, 2.25MHz  
2.25MHz Constant Frequency Current Mode Operation, V from 2.5V to  
IN  
5.5V, V  
Down to 0.6V, DFN, MS Packages  
OUT  
2
2
I C Controllable Buck Regulator  
600mA, 1.5MHz Current Mode Buck Regulator, I C Programmable V  
from 0.85V to 1.55V, two 50mA LDOs, Backup Battery Input with  
PowerPath™ Control, QFN Package  
OUT  
with Two LDOs and and  
Backup Battery Input  
LTC3555  
LTC3557  
High Efficiency USB Power Manager Plus  
Triple Step-Down DC/DC  
Maximizes Available Power from USB Port, Bat-Track™, “Instant On” Operation,  
1.5A Maximum Charge Current, 180mΩ Ideal Diode with <50Ω Option, 3.3V/25mA  
Always-On LDO, Three Synchronous Buck Regulators  
(400mA/400mA/1A), 4mm × 5mm QFN28 Package  
USB Power Manager with Li-Ion/Polymer  
Charger and Triple Synchrounous  
Buck Converter  
Complete Multifunction ASSP: Linear Power Manager and Three Buck Regulators,  
Charge Current Programmable Up to 1.5A from Wall Adapter Input,  
Thermal Regulation, Synchronous Buck Efficiency: >95%, ADJ Outputs: 0.8V to 3.6V  
at 400mA/400mA/600mA, Bat-Track Adaptive Output Control,  
200mΩ Ideal Diode, 4mm × 4mm QFN28 Package  
LTC3559  
Linear USB Li-Ion Battery Charger with  
Dual Buck Regulators  
Charge Current Programmable Up to 950mA, USB Compatible, Dual Synchronous  
400mA Buck Regulators, Efficiency >90%, 3mm × 3mm QFN16 Package  
LTC3672B-1/  
LTC3672B-2  
Fixed-Output Monolithic 400mA Buck  
Regulator with Dual 150mA LDOs in  
a 2mm × 2mm DFN  
>90% Efficiency, V : 2.9V to 5.5V, I = 260µA,  
IN Q  
LTC3672B-1: Buck = 1.8V, LDO1 = 1.2V, LDO2 = 2.8V  
LTC3672B-2: Buck = 1.2V, LDO1 = 2.8V, LDO2 = 1.8V  
Consult LTC Factory for Other Voltage Combinations  
LTC3700  
Step-Down DC/DC Controller with  
LDO Regulator  
V from 2.65V to 9.8V, Constant Frequency 550kHz Operation  
IN  
3446ff  
LT 0511 REV F • PRINTED IN USA  
20 LinearTechnology Corporation  
1630 McCarthy Blvd., Milpitas, CA 95035-7417  
●
●
LINEAR TECHNOLOGY CORPORATION 2006  
(408) 432-1900 FAX: (408) 434-0507 www.linear.com  
1...17181920

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