LTC3405A - LTC3405A是1.5MHz, 300mA Synchronous Step-Down Regulator in ThinSOT?
LTC3405A是Linear公司的一款微功率降压产品，LTC3405A是1.5MHz, 300mA Synchronous Step-Down Regulator in ThinSOT?，本站介绍了LTC3405A的封装应用图解、特点和优点、功能等，并给出了与LTC3405A相关的凌力尔特元器件型号供参考。
LTC3405A - 1.5MHz, 300mA Synchronous Step-Down Regulator in ThinSOT?
LTC3405A - 1.5MHz, 300mA Synchronous Step-Down Regulator in ThinSOT? - Linear Technology（凌力尔特）
功能描述
The LTC3405A is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation is only 20μA and drops to <1μA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3405A ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems.
Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. The LTC3405A is specifically designed to work well with ceramic output capacitors, achieving very low output voltage ripple and a small PCB footprint.
The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.8V feedback reference voltage. The LTC3405A is available in a low profile (1mm) ThinSOT package.
For fixed 1.5V and 1.8V output versions, refer to the LTC3405A-1.5/LTC3405A-1.8 data sheet.
Protected by U.S. Patents, including 6580258, 5481178.
特点
High Efficiency: Up to 96% Very Low Quiescent Current: Only 20μA During Operation 300mA Output Current at VIN = 3V 2.5V to 5.5V Input Voltage Range 1.5MHz Constant Frequency Operation No Schottky Diode Required Low Dropout Operation: 100% Duty Cycle Stable with Ceramic Capacitors 0.8V Reference Allows Low Output Voltages Shutdown Mode Draws <1μA Supply Current ±2% Output Voltage Accuracy Current Mode Operation for Excellent Line and Load Transient Response Overtemperature Protected Low Profile (1mm) ThinSOT? Package应用
Cellular Telephones Personal Information Appliances Wireless and DSL Modems Digital Still Cameras MP3 Players Portable 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 | SOT-23 | E | $2.37 | |
| LTC3405AES6#PBF | SOT-23 | E | $2.37 | |
| LTC3405AES6#TR | SOT-23 | E | $2.37 | $1.67 |
| LTC3405AES6#TRM | SOT-23 | E | $2.37 | $1.69 |
| LTC3405AES6#TRMPBF | SOT-23 | E | $2.37 | $1.69 |
| LTC3405AES6#TRPBF | SOT-23 | E | $2.37 | $1.67 |
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