TPS61258
- 93% Efficiency at 3.5-MHz Operation
- 21-µA Quiescent Current in Standby Mode
- 37-µA Quiescent Current in Normal Operation
- Wide VIN Range From 2.3 V to 5.5 V
- VIN ≥ VOUT Operation
- IOUT ≥ 800 mA at VOUT= 4.5 V, VIN ≥ 2.65 V
- IOUT ≥ 1000 mA at VOUT = 5.0 V, VIN ≥ 3.3 V
- IOUT ≥ 1500 mA (Peak) at VOUT = 5.0 V, VIN ≥ 3.3 V
- ±2% Total DC Voltage Accuracy
- Light-Load PFM Mode
- Selectable Standby Mode or True Load
Disconnect During Shutdown - Thermal Shutdown and Overload Protection
- Only Three Surface-Mount External Components
Required - Total Solution Size < 25 mm2
- 9-Pin NanoFree™ (CSP) Packaging
The TPS6125x device provides a power supply solution for battery-powered portable applications. Intended for low-power applications, the TPS6125x supports up to 800-mA load current from a battery discharged as low as 2.65V and allows the use of low cost chip inductor and capacitors.
With a wide input voltage range of 2.3 V to 5.5 V, the device supports applications powered by Li-Ion batteries with extended voltage range. Different fixed voltage output versions are available from 3.15 V to 5.0 V.
The TPS6125x operates at a regulated 3.5-MHz switching frequency and enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range. The PFM mode extends the battery life by reducing the quiescent current to 37 µA (typ) during light load operation.
In addition, the TPS6125x device can also maintain its output biased at the input voltage level. In this mode, the synchronous rectifier is current limited allowing external load (e.g. audio amplifier) to be powered with a restricted supply. In this mode, the quiescent current is reduced to 21 µA. During shutdown, the load is completely disconnected from the battery. Input current in shutdown mode is less than 1 µA (typ), which maximizes battery life.
The TPS6125x offers a very small solution size due to minimum amount of external components. It allows the use of small inductors and input capacitors to achieve a small solution 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 | TPS6125x 3.5-MHz High Efficiency Step-Up Converter In Chip Scale Packaging 数据表 (Rev. G) | PDF | HTML | 2016-6-16 | ||
| 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 | ||||
| 技术文章 | Four tips to debug a boost converter | PDF | HTML | 2016-11-29 | |||
| 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 | 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 | 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
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TPS61258EVM-766 — TPS61258 评估模块
The TPS6125XEVM-766 enables test and evaluation of the Texas Instruments' TPS61253, TPS61258 and TPS61259 (TPS6125x) devices, a series of 3.5-MHz high efficiency, fixed output voltages up to 5.1-V, Chip Scale step-up dc-dc converters. The user's guide for this EVM includes EVM specifications, the (...)
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| DSBGA (YFF) | 9 | Ultra Librarian |