STBB2 800 mA 3 MHz, high efficiency dual mode buck-boost DC-DC converter
The STBB2 is a fixed frequency, high efficiency, buck-boost DC-DC converter able to provide output voltages from 1.2 V to 4.5 V starting from input voltage of 2.3 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 Li-Ion, multi-cell alkaline or NiMH applications where the output voltage is within the battery voltage range. The low-RDSonN-channel and P-channel MOSFET switches are integrated and contribute to achieving high efficiency. The MODE pin allows selection between auto mode and forced PWM mode, therefore benefiting from either lower power consumption or best dynamic performance. The bypass function allows battery power saving. In this operating mode the high-side switches are turned on so that the output voltage is equal to the input voltage; in this condition the current consumption is reduced to a maximum of 5 μA. The device includes also soft-start control, thermal shutdown, and current limit. The STBB2 is packaged in Flip Chip 20 bumps with 0.4 mm pitch
技术特性
- Operating input voltage range from 2.3 V to 5.5 V
- ± 2% output voltage tolerance over process and temperature variations
- Bypass power save function
- Selectable output voltage with dedicated VSEL pin
- Very fast line and load transients
- 2.5 MHz switching frequency
- Power save mode (PS) at light load
- Typical efficiency higher than 90%
- 50 μA max. quiescent current
- Flip Chip 20 bumps 0.4 mm pitch 2.1 x 1.8 mm
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应用领域
- Memory card supply
- Cellular phones
功能框图
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STBB2 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 |
| STBB2JAD-R |
Active |
0.9 |
1000 |
Flip-Chip 400u |
Tape And Reel |
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STBB2JAD-R |
| STBB2 |
Proposal |
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STBB2 |
| STBB2J29-R |
Active |
0.9 |
1000 |
Flip-Chip 400u |
Tape And Reel |
-40 °C-85°C |
STBB2J29-R |
DATASHEET
| 描述 |
版本 |
大小 |
| STBB2 : DS8863: 800 mA 2.5 MHz, high efficiency dual mode buck-boost DC-DC converter |
4 |
1907KB |
