TPS7A14
- Ultra-low input voltage range: 0.7 V to 2.2 V
- High efficiency:
- Dropout voltage at 1 A: 70 mV (max, YBK)
- Specified for V IN = V OUT +100 mV
- Excellent load transient response:
- 20 mV for I LOAD = 3 mA to 600 mA in 20 µs
- Accuracy over load, line, and temperature: 1%
- High PSRR:
- 80 dB at 1 kHz (V OUT = 0.8 V, I OUT = 500 mA)
- Available in fixed-output voltages:
- 0.5 V to 2.0 V (in 25-mV steps)
- V BIAS range: 2.2 V to 5.5 V
- Packages:
- 6-pin DSBGA: 0.71 mm × 1.16 mm
- 6-pin WSON: 2 mm × 2 mm
- Active output discharge
The TPS7A14 is a small, ultra low-dropout regulator (LDO) with excellent transient response. This device can source 1 A with outstanding ac performance (load and line transient responses). The input voltage range is 0.7 V to 2.2 V, and the output range is 0.5 V to 2.0 V with a very high accuracy of 1% over load, line, and temperature.
The primary power path is through the IN pin and can be connected to a power supply as low as 50 mV above the output voltage. All electrical characteristics (including excellent output voltage tolerance, transient response, and PSRR) are specified for input voltages 100 mV greater than the output voltage, thereby yielding high practical efficiency. This regulator supports very low input voltages with the use of a higher, externally supplied V BIAS rail that is used to power the internal circuitry of the LDO. For example, the supply voltage to the IN pin can be the output of a high-efficiency, DC/DC step-down regulator and the BIAS pin supply voltage can be a rechargeable battery.
The TPS7A14 is equipped with an active pulldown circuit to quickly discharge the output when disabled, and provides a known start-up state.
The TPS7A14 is available in a 2-mm × 2-mm, 6-pin WSON package and an ultra-small 0.71-mm × 1.16-mm, 6-bump WCSP package.
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 | TPS7A14 1-A, Low VIN, Low VOUT, Ultra-Low Dropout Regulator datasheet (Rev. D) | PDF | HTML | 2023/8/29 | ||
| 白皮書 | Demystifying LDO Turn-On (Start-Up) Time (Rev. B) | PDF | HTML | 2026/3/10 | |||
| 證書 | TPS7A14EVM-095 EU Declaration of Conformity (DoC) | 2023/6/6 | ||||
| 應用說明 | Design Flexibility of TPS7A1408 to Variable Vout and Stability Check | PDF | HTML | 2022/6/13 | |||
| 證書 | TPS7A14EVM-058 EU RoHS Declaration of Conformity (DoC) | 2021/9/24 |
設計與開發
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TPS7A14EVM-058 — TPS7A14 評估模組適用於 1-A、低輸入及輸出電壓、超 LDO 電壓穩壓器
TPS7A14 評估模組 (EVM) 可協助設計工程師評估 TPS7A14 線性穩壓器的運作及性能，以在其本身電路應用中使用。TPS7A14EVM-058 配置包含適合各種應用的單一低雜訊、小尺寸線性穩壓器。穩壓器能以低 VIN 至 VOUT 壓降電壓為負載提供最高 1 A。爲了穩定，請使用最小降額輸出電容 1.5 µF (或更大)。隨附新增高性能負載暫態電路，以改善低壓差 (LDO) 穩壓器的量測能力。
TPS7A14EVM-095 — 適用於超低雜訊正電壓穩壓器的 TPS7A14 評估模組
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DRV) | 6 | Ultra Librarian |
| DSBGA (YBK) | 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。