TPS61221
- Up to 95% Efficiency at Typical Operating
Conditions - 5.5 µA 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 6 V
- Fixed Output Voltage Versions
- Small 6-pin SC-70 Package
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 × 2 mm to enable small circuit layout size.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TPS6122x Low Input Voltage, 0.7V Boost Converter With 5.5μA Quiescent Current 数据表 (Rev. B) | PDF | HTML | 2014-11-11 | ||
| 应用手册 | 升压转换器功率级的基本计算 (Rev. D) | PDF | HTML | 英语版 (Rev.D) | PDF | HTML | 2022-11-11 | |
| 应用手册 | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 2018-12-11 | ||||
| 选择指南 | 电源管理指南 2018 | 2018-7-31 | ||||
| 应用手册 | Extending the Soft Start Time Without a Soft Start Pin (Rev. B) | 2017-6-15 | ||||
| 应用手册 | Five Steps to a Good PCB Layout of the Boost Converter | PDF | HTML | 2016-5-3 | |||
| 模拟设计期刊 | 超低IQ器件的精确效率测量 | 英语版 | 2014-2-28 | |||
| 应用手册 | Automated Frequency Response Analyzer | 2013-10-9 | ||||
| 模拟设计期刊 | DC/DC 转换器中电阻式反馈分压器设计考虑因素 | 英语版 | 2012-6-1 | |||
| 白皮书 | Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D) | 2012-3-28 | ||||
| 模拟设计期刊 | IQ：它是什么、不是什么以及如何使用 | 英语版 | 2011-8-17 | |||
| 应用手册 | Stellaris DCDC Converter Reference Design | 2009-8-3 | ||||
| 应用手册 | 最小化升压转换器开关节点处的振铃 | 英语版 | 2008-7-15 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
TIDA-00599 — 采用 LP5910 和 TPS61221 为超低压 MSP430 的配套器件供电的参考设计
MSP430X09X 可在 0.9V 至 1.65V 的超低压 (ULV) 范围内运行；但是系统中的大多数器件需要更高的电压。TIDA-00599 为需要 1.8V 和 3.3V 输入电压的配套器件提供了解决方案。
使用 TPS61221 升压转换器可从 0.9V 至 1.65V 电池生成一个 3.3V 电压轨，使用与升压转换器输出电压轨串联的高 PSRR LDO (LP5910) 可生成一个 1.8V 电压轨。输入电压为 1.65V 时，组合输出电流为 100mA，输入电压为 0.90V 时，组合输出电流为 50mA。
此电源解决方案适合为传感器和外设供电，采用与 MSP430 (...)
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOT-SC70 (DCK) | 6 | Ultra Librarian |
订购和质量
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