LTC3405A-1.8 - LTC3405A-1.8是1.5V, 1.8V, 1.5MHz, 300mA Synchronous Step-Down Regulators in ThinSOT
LTC3405A-1.8是Linear公司的一款微功率降压产品，LTC3405A-1.8是1.5V, 1.8V, 1.5MHz, 300mA Synchronous Step-Down Regulators in ThinSOT，本站介绍了LTC3405A-1.8的封装应用图解、特点和优点、功能等，并给出了与LTC3405A-1.8相关的凌力尔特元器件型号供参考。
LTC3405A-1.8 - 1.5V, 1.8V, 1.5MHz, 300mA Synchronous Step-Down Regulators in ThinSOT
LTC3405A-1.8 - 1.5V, 1.8V, 1.5MHz, 300mA Synchronous Step-Down Regulators in ThinSOT - Linear Technology（凌力尔特）
功能描述
The LTC®3405A-1.5/LTC3405A-1.8 are high efficiencymonolithic synchronous buck regulators using a constantfrequency, current mode architecture. Supply currentduring operation is only 20μA and drops to <1µA inshutdown. The 2.5V to 5.5V input voltage range makes theLTC3405A-1.5/LTC3405A-1.8 ideally suited for singleLi-Ion battery-powered applications. 100% duty cycleprovides low dropout operation, extending battery life inportable systems.
Switching frequency is internally set at 1.5MHz, allowingthe use of small surface mount inductors and capacitors.
The LTC3405A-1.5/LTC3405A-1.8 are specifically designedto work well with ceramic output capacitors, achievingvery low output voltage ripple and a small PCB footprint.
The internal synchronous switch increases efficiency andeliminates the need for an external Schottky diode. TheLTC3405A-1.5/LTC3405A-1.8 are available in a low profile(1mm) ThinSOT package.
For adjustable output voltage, refer to the LTC3405A datasheet.
Protected by U.S. Patents, including 6580258, 5481178.
特点
High Efficiency: Up to 93%Very Low Quiescent Current: Only 20µA During Operation300mA Output Current at VIN = 3V2.5V to 5.5V Input Voltage Range1.5MHz Constant Frequency OperationNo Schottky Diode RequiredLow Dropout Operation: 100% Duty CycleStable with Ceramic CapacitorsShutdown Mode Draws <1µA Supply Current?3% Output Voltage AccuracyCurrent Mode Operation for Excellent Line and Load Transient ResponseOvertemperature ProtectedLow Profile (1mm) ThinSOT™ Package应用
Cellular TelephonesPersonal Information AppliancesWireless and DSL ModemsDigital Still CamerasMP3 PlayersPortable Instruments以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）
| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) |
| LTC3405AES6-1.8 | SOT-23 | E | $2.37 | |
| LTC3405AES6-1.8#PBF | SOT-23 | E | $2.37 | |
| LTC3405AES6-1.8#TR | SOT-23 | E | $2.37 | $1.67 |
| LTC3405AES6-1.8#TRM | SOT-23 | E | $2.37 | $1.69 |
| LTC3405AES6-1.8#TRMPBF | SOT-23 | E | $2.37 | $1.69 |
| LTC3405AES6-1.8#TRPBF | SOT-23 | E | $2.37 | $1.67 |
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