TPS720
- 350-mA High-Performance LDO
- Low Quiescent Current: 38 µA
- Excellent Load Transient Response:
±15 mV for ILOAD = 0 mA to 350 mA in 1 µs - Excellent Line Transient Response:
ΔVOUT = ±2 mV for ΔVBIAS = ±600 mV in 1 µs
ΔVOUT = ±200 µV for ΔVIN = ±400 mV in 1 µs - Low Noise: 48 µVRMS (10 Hz to 100 kHz)
- 80 dB VIN PSRR (10 Hz to 10 kHz)
- 70 dB VBIAS PSRR (10 Hz to 10 kHz)
- Fast Start-Up Time: 140 µs
- Built-In Soft-Start With Monotonic VOUT Rise and Start-Up Current Limited to 100 mA + ILOAD
- Overcurrent and Thermal Protection
- Low Dropout: 110 mV at ILOAD = 350 mA
- Stable with 2.2-µF Output Capacitor
- Available in 1.33 mm × 0.96 mm DSBGA-5 and 2 mm × 2 mm SON-6 Packages
The TPS720 family of dual rail, low-dropout linear regulators (LDOs) offers outstanding ac performance (PSRR, load and line transient response), while consuming a very low quiescent current of 38 µA.
The VBIAS rail that powers the control circuit of the LDO draws very low current (on the order of the quiescent current of the LDO) and can be connected to any power supply that is equal to or greater than 1.4 V above the output voltage. The main power path is through VIN, which can be a lower voltage than VBIAS; it can be as low as VOUT + VDO, increasing the efficiency of the solution in many power-sensitive applications. For example, VIN can be an output of a high-efficiency, DC-DC step-down regulator.
The TPS720 supports a novel feature in which the output of the LDO regulates under light loads when the IN pin is left floating. The light-load drive current is sourced from VBIAS under this condition. This feature is particularly useful in power-saving applications where the DC-DC converter connected to the IN pin is disabled but the LDO is still required to regulate the voltage to a light load.
The TPS720 is stable with ceramic capacitors and uses an advanced BICMOS fabrication process that yields a dropout of 110 mV at a 350-mA output load. The TPS720 has the unique feature of providing a monotonic VOUT rise (overshoot limited to 3%) with VIN inrush current limited to 100 mA + ILOAD with an output capacitor of 2.2 µF.
The TPS720 uses a precision voltage reference and feedback loop to achieve overall
accuracy of 2% over load, line, process, and temperature extremes. An ultra-small DSBGA package
makes the TPS720 ideal for handheld applications. The TPS720 is also available in a SON-8 package.
This family of devices is fully specified over the temperature range of
TJ = –40°C to 125°C.
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 | TPS720 350 mA, Ultra-Low VIN, RF Low-Dropout Linear Regulator With Bias Pin datasheet (Rev. E) | PDF | HTML | 2015/9/30 | ||
| 應用說明 | LDO Noise Demystified (Rev. B) | PDF | HTML | 2020/8/18 | |||
| 應用說明 | A Topical Index of TI LDO Application Notes (Rev. F) | 2019/6/27 | ||||
| 選擇指南 | Low Dropout Regulators Quick Reference Guide (Rev. P) | 2018/3/21 | ||||
| 應用說明 | LDO PSRR Measurement Simplified (Rev. A) | PDF | HTML | 2017/8/9 | |||
| 應用說明 | Power Reference Design for the 'C6472, 12V DCDC Controllers, and LDOs | 2010/3/26 | ||||
| 類比設計期刊 | Taming linear-regulator inrush currents | 2009/5/1 | ||||
| 類比設計期刊 | Q2 2009 Issue Analog Applications Journal | 2009/5/1 | ||||
| 使用指南 | TPS720xx | 2008/8/19 | ||||
| 應用說明 | Inrush Current Limit in the TPS720xx | 2008/6/6 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
TPS720105DRVEVM — 採用 DRV 封裝的 TPS720105 LDO 線性穩壓器評估模組
TIDA-00204 — 符合 EMI/EMC 規範的工業溫度雙連接埠 Gigabit 乙太網路 PHY 參考設計
此設計允許對具有整合式乙太網路 MAC 和交換器的兩種工業級 DP83867IR Gigabit 乙太網路 PHY 和 Sitara™ 主機處理器進行性能評估。本產品的開發符合 EMI 及 EMC 的工業要求。應用韌體為 PHY、UDP 和 TCP/IP 堆疊以及 HTTP Web 伺服器範例實作了驅動程式。主機處理器配置為從板載 SD 卡啟動預先安裝的韌體。USB 虛擬 COM 連接埠提供對 PHY 暫存器的可選存取。JTAG 介面允許自行開發韌體。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DRV) | 6 | Ultra Librarian |
| DSBGA (YZU) | 5 | 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。