Analog Devices Inc. LTC3245无电感器电荷泵直流/直流转换器
Analog Devices LTC3245无电感器电荷泵转换器是降压-升压型直流/直流转换器，可采用2.7V至38V输入产生一个稳定的输出（3.3V、5V或可调）。该转换器的内部电路自动选择转换比，在输入电压和负载条件改变时最大限度地提高效率。为了进一步优化效率，设计人员可以在引脚可选突发模式下操作转换器。相比于传统的充电泵稳压器，LTC3245独特的恒定频率架构可提供一个噪声较低的输出。LTC3245转换器的工作电流低至20μA，非常适合低功耗、空间受限的汽车和工业应用。
特性
- 2.7V to 38V VIN range
- IQ = 18μA operating; 4μA in shutdown
- 12V to 5V efficiency = 81%
- Multimode operation (2:1, 1:1, 1:2) with automatic mode switching
- Low noise, constant frequency operation
- Pin selectable Burst Mode® operation
- Fixed 3.3V, 5V, or Adjustable (2.5V to 5V) VOUT range
- IOUT up to 250mA
- Overtemperature and short-circuit protection
- +150°C maximum operating junction temperature
- Thermally enhanced 12-pin MSOP and low profile
- 12-pin (3mm × 4mm) DFN packages
应用
- Automotive ECU/CAN transceiver supplies
- Industrial housekeeping supplies
- Low power 12V to 5V conversion
Typical Application
发布日期: 2017-04-28
| 更新日期: 2022-03-11