LTC3421 - LTC3421是3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect
LTC3421是Linear公司的一款微功率升压产品，LTC3421是3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect，本站介绍了LTC3421的封装应用图解、特点和优点、功能等，并给出了与LTC3421相关的凌力尔特元器件型号供参考。
LTC3421 - 3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect
LTC3421 - 3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect - Linear Technology（凌力尔特）
功能描述
The LTC3421 is a high efficiency, current mode, fixed frequency, step-up DC/DC converter with true output disconnect and inrush current limiting. The device includes a 0.10 Ohm N-channel MOSFET switch and a 0.14 Ohm P-channel synchronous rectifier. This product has the ability to simply program the output voltage, switching frequency, current limit, soft-start, Burst Mode threshold and loop compensation with external passive components.
Quiescent current is only 12µA during Burst Mode operation, maximizing battery life in portable applications. The oscillator frequency can be programmed up to 3MHz and can be synchronized to an external clock applied to the SYNC pin. An open-drain uncommitted low-battery comparator is included. The part maintains operation in applications with a secondary cell powering the output voltage during shutdown.
Other features include: 1µA shutdown, antiringing control, thermal limit and reference output.
The LTC3421 is available in a small 4mm x 4mm QFN package.
特点
Synchronous Rectification: Up to 96% Efficiency True Output Disconnect Inrush Current Limiting Very Low Quiescent Current: 12µA Up to 1.5A Continuous Output Current Fixed Frequency Operation Up to 3MHz 0.5V to 4.5V Input Range 2.4V to 5.25V Adjustable Output Voltage Guaranteed 1V Start-Up Programmable Current Limit Programmable Soft-Start Synchronizable Oscillator Manual or Automatic Burst Mode Operation Low-Battery Comparator <1µA Shutdown Current 1.22V Reference Output Voltage Small (4mm x 4mm) Thermally Enhanced QFN Package应用
Handheld Computers Cordless Phones GPS Receivers Battery Backup Supplies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) |
| LTC3421EUF | 4x4 QFN-24 | E | $5.00 | $3.50 |
| LTC3421EUF#PBF | 4x4 QFN-24 | E | $5.00 | $3.50 |
| LTC3421EUF#TR | 4x4 QFN-24 | E | | $3.60 |
| LTC3421EUF#TRPBF | 4x4 QFN-24 | E | | $3.60 |
下面可能是您感兴趣的Linear Technology（凌力尔特）元器件
LTC3122 - 具输出断接功能的 15V、2.5A 同步升压型 DC/DC 转换器LTC3425 - 5A、8MHz、四相同步升压型 DC/DC 转换器 LTC3539 / LTC3539-2 - 2A、1MHz / 2MHz 同步升压型 DC/DC 转换器LTC3789 - 高效率、同步、四开关降压-升压型控制器LTC3402 - 2A、3MHz 微功率同步升压转换器 LTC3115-1 - 40V、2A、同步降压-升压型 DC/DC 转换器LT3652 - 用于太阳能电源的功率跟踪 2A 电池充电器LTC3108 - 超低电压、升压型转换器和电源管理器LT3080 - 可调 1.1A、单电阻、低压差稳压器LT3959 - 具 6A、40V 开关的宽输入电压范围升压 / SEPIC / 负输出转换器
下面可能是您感兴趣的Linear公司微功率升压元器件
LT3653 - LT3653是为电池充电器应用以及具输出电流限制功能的 1.2A、高电压输入稳压器LTC4069 - LTC4069是采用 2mm x 2mm DFN 封装并具有 NTC 热敏电阻输入的独立 750mA 锂离子电池充电器LTC2362 - LTC2362是采用 TSOT-23 封装的 500ksps、12 位串行 ADCLTC1522 - LTC1522是Micropower, Regulated 5V Charge Pump DC/DC ConverterLTC4413-1 - LTC4413-1是采用 3mm x 3mm DFN 封装的双通道 2.6A、2.5V 至 5.5V 快速理想二极管LT1804 - LT1804是Single/Dual/Quad 100V/μs, 85MHz, Rail-to-Rail Input and Output Op AmpsLT1675 - LT1675是250MHz, Triple and Single RGB Multiplexer with Current Feedback AmplifiersLT8311 - LT8311是具有用于正激式转换器之光耦合器驱动器的同步整流器控制器LT1139A - LT1139A是Advanced Low Power 5V RS232 Drivers/Receivers with Small Capacitors (Includes LT1130 thru LT1141)LTC1092 - LTC1092是1, 2, 6 and 8 Channel, 10-Bit Serial I/O Data Acquisition Systems
