TPS7A49
- Input Voltage Range: 3 V to 36 V
- Noise:
- 12.7 µVRMS (20 Hz to 20 kHz)
- 15.4 µVRMS (10 Hz to 100 kHz)
- Power-Supply Ripple Rejection:
- 72 dB (120 Hz)
- ≥ 52 dB (10 Hz to 400 kHz)
- Adjustable Output: 1.194 V to 33 V
- Output Current: 150 mA
- Dropout Voltage: 260 mV at 100 mA
- Stable with Ceramic Capacitors ≥ 2.2 µF
- CMOS Logic-Level-Compatible Enable Pin
- Fixed Current-Limit and Thermal Shutdown Protection
- Packages: 8-Pin HVSSOP PowerPAD™ and
3-mm × 3-mm VSON - Operating Temperature Range:
–40°C to 125°C
The TPS7A49 series of devices are positive, high-voltage (36 V), ultralow-noise (15.4 µVRMS, 72-dB PSRR) linear regulators that can source a 150-mA load.
These linear regulators include a CMOS logic-level-compatible enable pin and capacitor-programmable soft-start function that allows for customized power-management schemes. Other available features include built-in current limit and thermal shutdown protection to safeguard the device and system during fault conditions.
The TPS7A49 family is designed using bipolar technology, and is ideal for high-accuracy, high-precision instrumentation applications where clean voltage rails are critical to maximize system performance. This design makes the device an excellent choice to power operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other high-performance analog circuitry.
In addition, the TPS7A49 family of linear regulators is suitable for post dc-dc converter regulation. By filtering out the output voltage ripple inherent to dc-dc switching conversion, maximum system performance is provided in sensitive instrumentation, test and measurement, audio, and RF applications.
For applications where positive and negative high-performance rails are required, consider TI’s TPS7A30xx family of negative high-voltage, ultralow-noise linear regulators as well.
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 | TPS7A49 36-V, 150-mA, Ultralow-Noise, Positive Linear Regulator datasheet (Rev. E) | PDF | HTML | 2015/5/26 | ||
| 白皮書 | Demystifying LDO Turn-On (Start-Up) Time (Rev. B) | PDF | HTML | 2026/3/10 | |||
| 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 | Parallel LDO Architecture Design Using Ballast Resistors | PDF | HTML | 2022/12/14 | |||
| 白皮書 | Comprehensive Analysis and Universal Equations for Parallel LDO's Using Ballast | PDF | HTML | 2022/12/13 | |||
| 應用說明 | A Topical Index of TI LDO Application Notes (Rev. F) | 2019/6/27 | ||||
| 應用說明 | Accurate Thermal Calculations on the Back of a Napkin | 2019/6/3 | ||||
| 電子書 | LDO Basics (Rev. A) | 2019/4/8 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 選擇指南 | Low Dropout Regulators Quick Reference Guide (Rev. P) | 2018/3/21 | ||||
| 技術文章 | LDO basics: dropout | PDF | HTML | 2017/3/16 |
設計與開發
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SIDEGIG-XOVEREVM — 類比、主動交叉音訊外掛程式模組
TPS7A30-49EVM-567 — TPS7A3001 和 TPS7A4901 低壓差 (LDO) 線性穩壓器評估模組
PMLKLDOEVM — 採用 TPS7A4901 和 TPS7A8300 的 TI-PMLK LDO 試驗電路板
我們的 TI-PMLK LDO 實驗電路板隸屬於 TI 電源管理實驗套件 (TI-PMLK) 系列。TI-PMLK 系列提供動手實作的學習方式，以加強對電源供應知識的理解。模組化格式可讓您依自身需求客製化 TI-PMLK 系列的學習體驗，以達到對電源設計理解的最大效益。TI-PMLK LDO 實驗電路板採用 TPS7A4901 和 TPS7A8300 低壓降 (LDO) 電壓穩壓器。TI-PMLK LDO 實驗手冊 (PMLKLDOEVMB) 涵蓋理論與實驗內容，包括針對穩態、暫態與動態條件的各種測試，模擬實際應用情境。
許多 TI 參考設計包含 TPS7A49
使用我們的參考設計選擇工具，以檢視並找出最適合您的應用和參數的設計。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSON (DRB) | 8 | Ultra Librarian |
| HVSSOP (DGN) | 8 | 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。