TPS62270 具有可选 VOUT 的 2.25MHz 400mA 降压转换器
TPS62270 描述
The TPS62270 device is a high efficiency synchronous step down DC-DC converter optimized for battery powered portable applications. It provides up to 400 mA output current from a single Li-Ion cell.
With an input voltage range of 2 V to 6 V the device supports Li-Ion batteries with extended voltage range, and is ideal to power portable applications like mobile phones and other portable equipment.
The TPS62270 operates at 2.25 MHz fixed switching frequency and enters Power Save Mode operation at light load currents to maintain high efficiency over the entire load current range. The Power Save Mode is optimized for low output voltage ripple.
With the VSEL pin, two different fixed output voltages can be selected. This function features a dynamic voltage scaling for low power processor cores.
|
TPS62270 |
TPS62272 |
TPS62273 |
| Iout(Max)(A) |
0.4 |
0.4 |
0.4 |
| Vin(Min)(V) |
2.0 |
2.0 |
2.0 |
| Vin(Max)(V) |
6.0 |
6.0 |
6.0 |
| Iq(Typ)(mA) |
0.015 |
0.015 |
0.015 |
| Switching Frequency(Max)(kHz) |
2250 |
2250 |
2250 |
| Switch Current Limit(Typ)(A) |
0.7 |
0.7 |
0.7 |
| Topology |
Buck |
Buck |
Buck |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
-40 to 85 |
| Pin/Package |
6SON |
6SON |
6SON |
| Rating |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
100 |
100 |
100 |
| Vout1(V) |
1.15 |
3.3 |
3.3 |
| Vout2(V) |
0.9 |
2.1 |
2.5 |
| Regulated Outputs(#) |
1 |
1 |
1 |
TPS62270 特性
- High Efficiency Step Down Converter
- Output Current up to 400 mA
- VIN Range From 2V to 6V for Li-Ion Batteries With Extended Voltage Range
- 2.25 MHz Fixed Frequency Operation
- Pin-Selectable Fixed Output Voltage
- Power Save Mode for Highest Efficiency
- Automatic transition between PFM and PWM Mode
- Voltage Positioning in PFM Mode
- Typical 15-µA Quiescent Current
- 100% Duty Cycle for Lowest Dropout
- Available in 2×2×0,8 mm SON Package
- Allows <1 mm Solution Height
- APPLICATIONS
- Low Power Processor Supply
- Cell Phones, Smart-phones
- Navigation Systems
- Low Power DSP Supply
- Portable Media Players
- Digital Cameras
TPS62270 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| TPS62270DRVR |
ACTIVE |
-40 to 85 |
0.95 | 1ku |
SON (DRV) | 6 |
3000 | LARGE T&R |
BYJ |
| TPS62270DRVRG4 |
ACTIVE |
-40 to 85 |
0.95 | 1ku |
SON (DRV) | 6 |
3000 | LARGE T&R |
BYJ |
| TPS62270DRVT |
ACTIVE |
-40 to 85 |
1.05 | 1ku |
SON (DRV) | 6 |
250 | SMALL T&R |
BYJ |
| TPS62270DRVTG4 |
ACTIVE |
-40 to 85 |
1.05 | 1ku |
SON (DRV) | 6 |
250 | SMALL T&R |
BYJ |
TPS62270 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 |
| TPS62270DRVR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS62270DRVR |
| TPS62270DRVRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS62270DRVRG4 |
TPS62270DRVRG4 |
| TPS62270DRVT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS62270DRVT |
| TPS62270DRVTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS62270DRVTG4 |
TPS62270DRVTG4 |
TPS62270 应用技术支持与电子电路设计开发资源下载
- TPS62270 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)
TPS62270 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS62270EVM-306 评估模块 |
TPS62270EVM-306 |
Texas Instruments |
开发电路板/EVM |
| SwitcherPro(TM) 开关电源设计工具 |
SWITCHERPRO |
Texas Instruments |
应用软件 |
TPS62270 参考设计
| 说明 |
型号 |
公司 |
| LDO、降压/升压、2 相同步降压、同步升压参考设计 |
PR038 |
Texas Instruments |
| 以太网电源 - 同步反向参考设计 |
PMP386 |
Texas Instruments |
| 同步 降压，两个输入电压 4.5-5.5V 的升压 多输出电压 3.3V、5V 和 12V |
PMP146 |
Texas Instruments |
| 降压/升压参考设计 |
PMP379 |
Texas Instruments |
