TPS61221 微型低输入电压升压转换器
TPS61221 描述
The TPS6122x family devices provide a power-supply solution for products powered by either a single-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. Possible output currents depend on the input-to-output voltage ratio. The boost converter is based on a hysteretic controller topology using synchronous rectification to obtain maximum efficiency at minimal quiescent currents. The output voltage of the adjustable version can be programmed by an external resistor divider, or is set internally to a fixed output voltage. The converter can be switched off by a featured enable pin. While being switched off, battery drain is minimized. The device is offered in a 6-pin SC-70 package (DCK) measuring 2 mm x 2 mm to enable small circuit layout size.
|
TPS61220 |
TPS61221 |
TPS61222 |
| Iout(Max)(A) |
0.2 |
0.2 |
0.2 |
| Iq(Typ)(mA) |
0.005 |
0.005 |
0.005 |
| Vin(Min)(V) |
0.7 |
0.7 |
0.7 |
| Vin(Max)(V) |
5.5 |
5.5 |
5.5 |
| Vout(Min)(V) |
1.8 |
3.3 |
5.0 |
| Vout(Max)(V) |
5.5 |
3.3 |
5.0 |
| Switching Frequency(Max)(kHz) |
2000 |
2000 |
2000 |
| Regulated Outputs(#) |
1 |
1 |
1 |
| Switch Current Limit(Typ)(A) |
0.4 |
0.4 |
0.4 |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
-40 to 85 |
| Pin/Package |
6SC70 |
6SC70 |
6SC70 |
| Topology |
Boost |
Boost |
Boost |
TPS61221 特性
- Up to 95% Efficiency at Typical Operating Conditions
- 5.5 µ Quiescent Current
- Startup Into Load at 0.7 V Input Voltage
- Operating Input Voltage from 0.7 V to 5.5 V
- Pass-Through Function during Shutdown
- Minimum Switching Current 200 mA
- Protections:
- Output Overvoltage
- Overtemperature
- Input Undervoltage Lockout
- Adjustable Output Voltage from 1.8 V to 5.5 V
- Fixed Output Voltage Versions
- Small 6-pin SC-70 Package
- APPLICATIONS
- Battery Powered Applications
- 1 to 3 Cell Alkaline, NiCd or NiMH
- 1 cell Li-Ion or Li-Primary
- Solar or Fuel Cell Powered Applications
- Consumer and Portable Medical Products
- Personal Care Products
TPS61221 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 |
| TPS61221DCKR |
ACTIVE |
-40 to 85 |
0.65 | 1ku |
SC70 (DCK) | 6 |
3000 | LARGE T&R |
CKR |
| TPS61221DCKT |
ACTIVE |
-40 to 85 |
0.75 | 1ku |
SC70 (DCK) | 6 |
250 | SMALL T&R |
CKR |
TPS61221 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 |
| TPS61221DCKR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS61221DCKR |
| TPS61221DCKT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS61221DCKT |
TPS61221 应用技术支持与电子电路设计开发资源下载
- TPS61221 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)
TPS61221 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS61221 评估模块 |
TPS61221EVM-319 |
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 |
