STBB1-AXX 1 A, high efficiency single inductor dual mode buck-boost DC-DC converter
The STBB1-A is a fixed frequency, high efficiency, buck-boost DC-DC converter able to provide output voltages ranging from 1.2 V to 5.5 V and input voltages from 2.0 V to 5.5 V. The device can operate with input voltages higher than, equal to, or lower than the output voltage making the product suitable for single lithium-Ion, multicell alkaline or NiMH applications where the output voltage is within the battery voltage range. The integrated low-RDSonN-channel and P-channel MOSFET switches contribute to its high efficiency. The MODE pin allows selecting between auto mode and forced PWM mode thus taking benefit either of lower power consumption or best dynamic performance. The device includes also soft-start control, thermal shutdown and current limit. The STBB1-A is packaged in DFN10 (3 x 3 mm).
技术特性
- Buck-boost DC-DC converter
- Operating input voltage range from 2.0 V to 5.5 V
- 2% DC feedback voltage tolerance
- Synchronous rectification
- Shutdown function
- 1.5 MHz switching frequency
- Power save mode at light load
- Typical efficiency: > 94%
- 1 A output current capability
- Shutdown current < 1 μA
- Available in DFN10 (3 x 3 mm)
|
应用领域
- Single cell Li-Ion and 3 cells alkaline, Ni-MH
powered devices
- SD/MMC memory card supply
- Palmtop computers
- Cell phones
- Digital cameras
功能框图
 |
STBB1-AXX 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| STBB1-APUR |
Active |
0.9 |
1000 |
VDFPN 10 3x3x1.0 |
Tape And Reel |
-40 °C-85°C |
STBB1-APUR |
| STBB1-AXX |
Propsal |
|
1000 |
|
|
-40 °C-85°C |
STBB1-AXX |
DATASHEET
| 描述 |
版本 |
大小 |
| STBB1-AXX : DS8642: 1 A, high efficiency single inductor dual mode buck-boost DC-DC converter |
2 |
1545KB |
DESIGN NOTES
| 描述 |
版本 |
大小 |
| DN0007: STBB1 buck-boost converter used as a 500mA LED driver with 1.8VDC-5.5VDC Vin |
1.0 |
189KB |
