LT1944-1 - Dual Micropower Step-up DC/DC Converter
The LT®1944-1 is a dual micropower step-up DC/DC converter in a 10-pin MSOP package. One converter is designed with a 100mA current limit and a 400ns off-time; the other with a 175mA current limit and a 1.5µs off-time. The 1.5µs off-time converter is ideal for generating an output voltage that is close to the input voltage (i.e. a Li-Ion to 5V converter, or a two-cell to 3.3V converter). With an input voltage range of 1.2V to 15V,the LT1944-1 is ideal for a wide variety of applications. Both converters feature a quiescent current of only 20µA at no load, which further reduces to 0.5µA in shutdown. A current limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of load current. Tiny, low profile inductors and capacitors can be used to minimize footprint and cost in space-conscious portable applications.
特点- Low Quiescent Current:20µA in Active Mode<1µA in Shutdown Mode
- Operates with VIN as Low as 1.2V
- Low VCESAT Switches: 85mV at 70mA
- Uses Small Surface Mount Components
- High Output Voltage: Up to 34V
- Tiny 10-Pin MSOP Package
典型应用
 | 应用- Small TFT LCD Panels
- Handheld Computers
- Battery Backup
- Digital Cameras
封装信息 |
Order Information 订购型号| 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) * |
|---|
| LT1944-1EMS#PBF | MS-10 | E | $2.37 | $2.00 |
| LT1944-1EMS#TRPBF | MS-10 | E | | $2.06 |
演示电路板
| 器件型号 | 描述 | 价格 |
|---|
| DC445A | LT1944-1EMS | Triple Output Power Supply For LCD Panels, Vin = 2.7V to 4.2V, Vout = 5V @ 30mA, 15V @ 2.5mA, -10V @ 1mA | $100.00 |
数据表可靠性数据LT JournalCAD 符号 | 相关产品 |
