LT3431 - LT3431是High Voltage, 3A, 500kHz Step-Down Switching Regulator
LT3431是Linear公司的一款内部开关电源降压产品，LT3431是High Voltage, 3A, 500kHz Step-Down Switching Regulator，本站介绍了LT3431的封装应用图解、特点和优点、功能等，并给出了与LT3431相关的凌力尔特元器件型号供参考。
LT3431 - High Voltage, 3A, 500kHz Step-Down Switching Regulator
LT3431 - High Voltage, 3A, 500kHz Step-Down Switching Regulator - Linear Technology（凌力尔特）
功能描述
The LT3431 is a 500kHz monolithic buck switching regulator that accepts input voltages up to 60V. A high efficiency 3A, 0.1 Ohm switch is included on the die along with all the necessary oscillator, control and logic circuitry. A current mode architecture provides fast transient response and good loop stability.
Special design techniques and a new high voltage process achieve high efficiency over a wide input range. Efficiency is maintained over a wide output current range by using the output to bias the circuitry and by utilizing a supply boost capacitor to saturate the power switch. Patented circuitry maintains peak switch current over the full duty cycle range. A shutdown pin reduces supply current to 30µA and the device can be externally synchronized from 580kHz to 700kHz with logic level inputs.
The LT3431 is available in a thermally enhanced 16-pin TSSOP package.
特点
Wide Input Range: 5.5V to 60V 3A Peak Switch Current Small Thermally Enhanced 16-Pin TSSOP Package Constant 500kHz Switching Frequency Saturating Switch Design: 0.1 Ohm Peak Switch Current Maintained Over Full Duty Cycle Range Effective Supply Current: 2.5mA Shutdown Current: 30µA 1.2V Feedback Reference Voltage Easily Synchronizable Cycle-by-Cycle Current Limiting应用
Industrial and Automotive Power Supplies Portable Computers Battery Chargers Distributed Power Systems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) |
| LT3431EFE | TSSOP-16 | E | $7.07 | $4.95 |
| LT3431EFE#PBF | TSSOP-16 | E | $7.07 | $4.95 |
| LT3431EFE#TR | TSSOP-16 | E | | $5.07 |
| LT3431EFE#TRPBF | TSSOP-16 | E | | $5.07 |
| LT3431IFE | TSSOP-16 | I | $8.13 | $5.69 |
| LT3431IFE#PBF | TSSOP-16 | I | $8.13 | $5.69 |
| LT3431IFE#TR | TSSOP-16 | I | | $5.81 |
| LT3431IFE#TRPBF | TSSOP-16 | I | | $5.81 |
下面可能是您感兴趣的Linear Technology（凌力尔特）元器件
LT3430 - High Voltage, 3A, 200kHz Step-Down Switching RegulatorLT3435 - High Voltage 3A, 500kHz Step-Down Switching Regulator with 100μA Quiescent CurrentLT1074 - 降压型开关稳压器LT3980 - 具 85μA 静态电流的 58V、2A、2.4MHz 降压型开关稳压器LT3434 - High Voltage 3A, 200kHz Step-Down Switching Regulator with 100μA Quiescent CurrentLT8610 - 具 2.5μA 静态电流的 42V、2.5A 同步降压型稳压器LT3992 - 单片式、双通道跟踪、3A 降压型开关稳压器LT3724 - 高电压、电流模式开关稳压控制器LT3995 - 具 2.7μA 静态电流的 60V、3A、2MHz 降压型开关稳压器LTC3891 - 低 Iq、60V、同步降压型控制器
下面可能是您感兴趣的Linear公司内部开关电源降压元器件
LTC1798CS8-4.1 - LTC1798CS8-4.1是微功率低压差基准LTC2180 - LTC2180是16 位、25Msps、低功率、双通道 ADCLTC2617 - LTC2617是14-Bit Dual Rail-to-Rail with I2C InterfaceLT1790AIS6-2.048 - LT1790AIS6-2.048是微功率、SOT-23 封装、低压差基准系列LT1251 - LT1251是40MHz 视频衰减器和 DC 增益控制放大器LTC5584 - LTC5584是具 IIP2 和 DC 偏移控制功能的 30MHz 至 1.4GHz I/Q 解调器LT1634ACS8-4.096 - LT1634ACS8-4.096是微功率精准并联电压基准LTC2323-14 - LTC2323-14是具宽输入共模范围的双通道、14 位带符号位、5Msps 差分输入 ADCLT1950 - LT1950是Single Switch PWM Controller with Auxiliary Boost ConverterLTC1541 - LTC1541是微功率运算放大器、比较器和基准
