TPS7A25
- Ultra-low IQ: 2 µA
- Input voltage: 2.4 V to 18 V
- Output voltage options available:
- Fixed: 1.25 V to 5.0 V
- Adjustable: 1.24 V to 17.66 V
- 1% accuracy over temperature
- Low dropout: 340 mV (max) at 300 mA
- Open-drain, power-good output
- Thermal shutdown and overcurrent protection
- Active overshoot pulldown
- Operating junction temperature: –40°C to +125°C
- Stable with 1-µF output capacitors
- Package: 6-pin WSON
The TPS7A25 low-dropout (LDO) linear voltage regulator introduces a combination of a 2.4-V to 18-V input voltage range with very-low quiescent current (IQ). These features help modern appliances meet increasingly stringent energy requirements, and help extend battery life in portable-power solutions.
The TPS7A25 is available in both fixed and adjustable versions. For more flexibility or higher output voltages, the adjustable version uses feedback resistors to set the output voltage from 1.24 V to 17.64 V. Both versions have a 1% output regulation accuracy that provides precision regulation for most microcontroller (MCU) references.
The TPS7A25 LDO operates more efficiently than standard linear regulators because the maximum dropout voltage is less than 340 mV at 300 mA of current. This maximum dropout voltage allows for 92.5% efficiency from a 5.4-V input voltage (VIN) to a 5.0-V output voltage (VOUT).
The power-good (PG) indicator can be used to either hold an MCU in reset until power is good, or for sequencing. The PG pin is an open-drain output; therefore, the pin is easily level-shifted for monitoring by a rail other than VOUT. The built-in current limit and thermal shutdown help protect the regulator in the event of a load short or fault.
For a higher output current alternative, consider the TPS7A26.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS7A25 300-mA, 18-V, Ultra-Low IQ, Low-Dropout Linear Voltage Regulator With Power-Good datasheet (Rev. C) | PDF | HTML | 2022/12/2 | ||
| 應用說明 | An empirical analysis of the impact of board layout on LDO thermal performance (Rev. A) | PDF | HTML | 2025/9/23 | |||
| 白皮書 | Understanding the Foundations of Quiescent Current in Linear Power Systems | 2021/2/18 | ||||
| 應用說明 | A Topical Index of TI LDO Application Notes (Rev. F) | 2019/6/27 | ||||
| 電子書 | LDO Basics (Rev. A) | 2019/4/8 | ||||
| 技術文章 | LDO basics: dropout | PDF | HTML | 2017/3/16 |
設計與開發
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TPS7A26EVM-021 — 具有電源良狀態好的 TPS7A26 500-mA 18-V 超低 IQ LDO 線性穩壓器評估模組
TPS7A26 評估模組 (EVM) 爲典型配置設計，用於評估 TPS7A26 裝置的運作和性能，其為 500mA 低壓差 (LDO) 線性穩壓器。
TPS7A26EVM-021 主要配置爲參考設計，可供需要高達 500 mA 動態負載電流的工程應用。
TIDA-050031 — 適合汽車緊急呼叫應用的備用電池電源參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DRV) | 6 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。