TPS61028 采用 QFN-10 封装的可调节 800mA 开关、96% 高效升压转换器，具有 LDO 降压模式
TPS61028 描述
The TPS6102x devices provide a power supply solution for products powered by either a one-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. Output currents can go as high as 200 mA while using a single-cell alkaline, and discharge it down to 0.9 V. It can also be used for generating 5 V at 500 mA from a 3.3-V rail or a Li-Ion battery. The boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. At low load currents the converter enters the Power Save mode to maintain a high efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to operate at a fixed switching frequency
|
TPS61020 |
TPS61024 |
TPS61025 |
TPS61026 |
TPS61027 |
TPS61028 |
TPS61029 |
| Iout(Max)(A) |
1.2 |
1.2 |
1.2 |
1.5 |
1.2 |
0.8 |
1.5 |
| Iq(Typ)(mA) |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
| Vin(Min)(V) |
0.9 |
0.9 |
0.9 |
0.9 |
0.9 |
0.9 |
0.9 |
| Vin(Max)(V) |
6.5 |
6.5 |
6.5 |
5.5 |
6.5 |
6.5 |
5.5 |
| Vout(Min)(V) |
1.8 |
|
|
|
|
1.8 |
1.8 |
| Vout(Max)(V) |
5.5 |
|
|
|
|
5.5 |
5.5 |
| Preset Vout(V) |
|
3 |
3.3 |
5 |
5 |
|
|
| Switching Frequency(Max)(kHz) |
720 |
720 |
720 |
720 |
720 |
720 |
720 |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
| Duty Cycle(Max)(%) |
100 |
100 |
100 |
100 |
100 |
100 |
|
| Switch Current Limit(Typ)(A) |
1.5 |
1.5 |
1.5 |
1.8 |
1.5 |
0.8 |
1.8 |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
| Pin/Package |
10SON |
10SON |
10SON |
10SON |
10SON |
10SON |
10SON |
| Topology |
Boost |
Boost |
Boost |
Boost |
Boost |
Boost |
Boost |
TPS61028 特性
- 96% Efficient Synchronous Boost Converter
- Output Voltage Remains Regulated When Input Voltage Exceeds Nominal Output Voltage
- Device Quiescent Current: 25 µA (Typ)
- Input Voltage Range: 0.9 V to 6.5 V
- Fixed and Adjustable Output Voltage Options Up to 5.5 V
- Power Save Mode for Improved Efficiency at Low Output Power
- Low Battery Comparator
- Low EMI-Converter (Integrated Antiringing Switch)
- Load Disconnect During Shutdown
- Over-Temperature Protection
- Small 3 mm × 3 mm QFN-10 Package
- APPLICATIONS
- All One-Cell, Two-Cell and Three-Cell Alkaline, NiCd or NiMH or Single-Cell Li Battery Powered Products
- Portable Audio Players
- PDAs
- Cellular Phones
- Personal Medical Products
- Camera White LED Flash Light
TPS61028 芯片订购指南
| 器件 |
状态 |
温度 |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| TPS61028DRCR |
ACTIVE |
-40 to 85 |
0.95 | 1ku |
SON (DRC) | 10 |
3000 | LARGE T&R |
BRD |
| TPS61028DRCRG4 |
ACTIVE |
-40 to 85 |
0.95 | 1ku |
SON (DRC) | 10 |
3000 | LARGE T&R |
BRD |
TPS61028 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| TPS61028DRCR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS61028DRCR |
| TPS61028DRCRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS61028DRCRG4 |
TPS61028DRCRG4 |
TPS61028 应用技术支持与电子电路设计开发资源下载
- TPS61028 数据资料 dataSheet 下载.PDF
- TI 德州仪器非隔离式开关 DC/DC 调节器选型与价格参考 . xls
- Dual MOSFET Driver
(PDF 498 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- Understanding Boost Power Stages In Switchmode Power Supplies
(PDF 149 KB)
- Understanding Buck Power Stages In Switchmode Power Supplies
(PDF 173 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
TPS61028 相关工具
TPS61028 参考设计
| 说明 |
型号 |
公司 |
| Spartan™-3 电源管理解决方案（设计 1） |
PR213 |
Texas Instruments |
| Spartan™-II 电源管理解决方案（设计 3） |
PR211 |
Texas Instruments |
| Spartan™-IIE 电源管理解决方案（设计 3） |
PR212 |
Texas Instruments |
