LTC3421 3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect
The LTC®3421 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
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LTC3421 订购信息和价格参考Package Variations and Pricing
| 器件型号 | 封装 | 引脚 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
| LTC3421EUF | QFN | 24 | E | $5.00 | $3.50 |
| LTC3421EUF#PBF | QFN | 24 | E | $5.00 | $3.50 |
| LTC3421EUF#TR | QFN | 24 | E | $3.60 | |
| LTC3421EUF#TRPBF | QFN | 24 | E | $3.60 |
LTC3421 数据手册及相关资料下载
- 数据手册(英文) : LTC3421 - 3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect.PDF
- 设计要点 (英文) : Design Solutions 10 - Active Voltage Positioning Reduces Output Capacitors.PDF
- 可靠性数据 : R415 Reliability Data .PDF
