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LTC3541EDD-3 PDF预览

LTC3541EDD-3

更新时间: 2024-11-12 05:43:55
品牌 Logo 应用领域
凌特 - Linear 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
20页 380K
描述
High Efficiency Buck + VLDO Regulator

LTC3541EDD-3 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Transferred零件包装代码:DFN
包装说明:HVSON, SOLCC10,.12,20针数:10
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.2
Is Samacsys:N模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-MODE最大输入电压:5.5 V
最小输入电压:2.7 V标称输入电压:3.6 V
JESD-30 代码:S-PDSO-N10JESD-609代码:e0
长度:3 mm湿度敏感等级:1
功能数量:1端子数量:10
最高工作温度:85 °C最低工作温度:
最大输出电流:1.25 A封装主体材料:PLASTIC/EPOXY
封装代码:HVSON封装等效代码:SOLCC10,.12,20
封装形状:SQUARE封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度(摄氏度):235认证状态:Not Qualified
座面最大高度:0.8 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:BUCK
最大切换频率:2700 kHz技术:CMOS
温度等级:COMMERCIAL EXTENDED端子面层:Tin/Lead (Sn/Pb)
端子形式:NO LEAD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:20
宽度:3 mmBase Number Matches:1

LTC3541EDD-3 数据手册

 浏览型号LTC3541EDD-3的Datasheet PDF文件第2页浏览型号LTC3541EDD-3的Datasheet PDF文件第3页浏览型号LTC3541EDD-3的Datasheet PDF文件第4页浏览型号LTC3541EDD-3的Datasheet PDF文件第5页浏览型号LTC3541EDD-3的Datasheet PDF文件第6页浏览型号LTC3541EDD-3的Datasheet PDF文件第7页 
LTC3541-3  
High Efficiency  
Buck + VLDO Regulator  
U
DESCRIPTIO  
FEATURES  
High Efficiency 500mA Buck Plus 300mA VLDO  
Theꢀ LTC®3541-3ꢀ combinesꢀ aꢀ synchronousꢀ buckꢀ DC/  
DCconverterwithaveryꢀlowꢀdropoutꢀlinearꢀregulatorꢀ  
(VLDOTMregulator)andinternalfeedbackresistornetworksꢀ  
toprovidetwooutputvoltagesfromasingleinputvoltageꢀ  
withꢀminimumꢀexternalꢀcomponents.ꢀWhenꢀconfiguredꢀ  
forꢀdualꢀoutputꢀoperation,ꢀtheꢀLTC3541-3’sꢀautoꢀstart-upꢀ  
featurewillbringthe1.575VVLDO/linearregulatoroutputꢀ  
intoregulationinacontrolledmannerpriortoenablingtheꢀ  
1.8Vbuckoutputwithouttheneedforexternalpincontrol.ꢀ  
The300mAVLDO/linearregulatoroutputwillsourceonlyꢀ  
30mAuntilthebuckoutputachievesregulation.Theinputꢀ  
voltageꢀrangeꢀisꢀideallyꢀsuitedꢀforꢀapplicationsꢀpoweredꢀ  
fromaLi-Ionbatteryand5Vor3.3Vrails.  
Regulator  
Auto Start-Up Powers VLDO/Linear Regulator  
Output Prior to Buck Output  
Independent 500mA High Efficiency Buck  
(V : 2.7V to 5.5V)  
IN  
300mA VLDO Regulator with 30mA Standalone Mode  
No External Schottky Diodes Required  
FixedBuck Output Voltage: 1.8V  
VLDO Input Voltage Range (LV : 1.675V to 5.5V)  
IN  
FixedVLDO Output Voltage: 1.575V  
ꢀ SelectableꢀFixedꢀFrequency,ꢀPulse-SkipꢀOperation  
ꢀ orꢀBurstꢀMode®ꢀOperation  
ꢀ Short-CircuitꢀProtected  
Thesynchronousbuckconverterprovidesahighefficiencyꢀ  
output,typically90%.Itcanprovideupto500mAofoutputꢀ  
currentꢀwhileꢀswitchingꢀatꢀ2.25MHz,ꢀallowingꢀtheꢀuseꢀofꢀ  
smallꢀsurfaceꢀmountꢀinductorsꢀandꢀcapacitors.ꢀAꢀmodeꢀ  
selectꢀpinꢀallowsꢀBurstꢀModeꢀoperationꢀtoꢀbeꢀenabledꢀforꢀ  
higherefficiencyatlightloadcurrents,ordisabledforlowerꢀ  
noise,constantfrequencyoperation.ꢀ  
ꢀ CurrentꢀModeꢀOperationꢀforꢀExcellentꢀLineꢀandꢀLoadꢀ  
TransientꢀResponse  
ꢀ ShutdownꢀCurrent:ꢀ<3µA  
ꢀ ConstantꢀFrequencyꢀOperation:ꢀ2.25MHz  
ꢀ LowꢀDropoutꢀBuckꢀOperation:ꢀ100%ꢀDutyꢀCycle  
ꢀ Small,ꢀThermallyꢀEnhanced,ꢀ10-Leadꢀ(3mmꢀ×ꢀ3mm)ꢀ  
DFNꢀPackage  
U
TheVLDOregulatorprovidesalownoise,lowvoltageꢀ  
outputcapableofprovidingupto300mAofoutputcurrentꢀ  
usingꢀonlyꢀaꢀ2.2µFꢀceramicꢀcapacitor.ꢀTheꢀinputꢀsupplyꢀ  
voltageꢀofꢀtheꢀVLDOꢀregulatorꢀ(LV )ꢀmayꢀcomeꢀfromꢀtheꢀ  
buckꢀregulatorꢀorꢀaꢀseparateꢀsupply.  
APPLICATIO S  
ꢀ DigitalꢀCameras  
IN  
ꢀ CellularꢀPhones  
ꢀ PCꢀCards  
, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology  
ꢀ WirelessꢀandꢀDSLꢀModems  
Corporation. VLDO is a trademark of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
ꢀ OtherꢀPortableꢀPowerꢀSystems  
Protected by U.S. Patents, including 5481178, 6611131, 6304066, 6498466, 6580258.  
U
Buck (Burst) Efficiency vs Load Current  
TYPICAL APPLICATIO  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
1
V
= 3V  
IN  
LTC3541-3 Typical Application  
EFFICIENCY  
V
IN  
3V TO 5V  
0.1  
SW  
ENVLDO  
MODE  
POWER  
LOSS  
0.01  
0.001  
0.0001  
V
IN  
2.2µH  
10µF  
LTC3541-3  
ENBUCK  
GND  
V
OUT  
V
OUT1  
1.8V  
V
OUT2  
1.575V  
LV  
LV  
OUT  
PGND  
IN  
2.2µF  
1
10  
100  
1000  
35413 TA01a  
35413 TA01b  
LOAD CURRENT (mA)  
35413fc  

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