TPS722
- 50-mA LDO
- Available in 1.5-V, 1.6-V, and 1.8-V Fixed-Output and Adjustable Versions
- Low Input Voltage Requirement (Down to 1.8 V)
- Small Output Capacitor, 0.1-uF
- Dropout Voltage Typically 50 mV at 50 mA
- Less Than 1 uA Quiescent Current in Shutdown Mode
- Thermal Protection
- Over Current Limitation
- 5-Pin SOT-23 (DBV) Package
- APPLICATIONS
- Portable Communication Devices
- Battery Powered Equipment
- PCMCIA Cards
- Personal Digital Assistants
- Modems
- Bar Code Scanners
- Backup Power Supplies
- SMPS Post Regulation
- Internet Audio
The TPS722xx family of LDO regulators is available in fixed voltage options that are commonly used to power the latest DSP’s and microcontrollers with an adjustable option ranging from 1.22 V to 2.5 V. These regulators can be used in a wide variety of applications ranging from portable, battery-powered equipment to PC peripherals. The family features operation over a wide range of input voltages (1.8 V to 5.5 V) and low dropout voltage (50 mV at full load). Therefore, compared to many other regulators that require 2.5-V or higher input voltages for operation, these regulators can be operated directly from two AAA batteries. Also, the typical quiescent current (ground pin current) is low, starting at 85 uA during normal operation and 1 uA in shutdown mode. Thus, these regulators can be operated very efficiently and, in a battery-powered application, help extend the longevity of the device.
Similar LDO regulators require 1-uF or larger output capacitors for stability. However, this regulator uses an internal compensation scheme that stabilizes the feedback loop over the full range of input voltages and load currents with output capacitances as low as 0.1-uF. Ceramic capacitors of this size are relatively inexpensive and available in small footprints.
This family of regulators is particularly suited as a portable power supply solution due to its minimal board space requirement and 1.8-V minimum input voltage. Being able to use two off-the-shelf, AAA, batteries makes system design easier and also reduces component cost. Moreover, the solution will be more efficient than if a regulator with a higher input voltage is used.
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 | Low Input Voltage, Cap-Free 50-mA Low-Dropout Linear Regulators datasheet (Rev. B) | 2002/4/22 | |||
| 應用說明 | LDO Noise Demystified (Rev. B) | PDF | HTML | 2020/8/18 | |||
| 應用說明 | LDO PSRR Measurement Simplified (Rev. A) | PDF | HTML | 2017/8/9 | |||
| 使用指南 | DEM-SOT23LDO Demonstration Fixture User's Guide (Rev. A) | 2005/6/2 |
設計與開發
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DEM-SOT23LDO — 採用 5 條或 6 條導線 SOT23 (DBV) 封裝且與最大正輸出 LDO 穩壓器相容的 DEM-SOT23LDO
TPS76901EVM-127 — SOT-23 LDO、5-V 至 1.8-V、100-mA 輸出電源
The TPS76901EVM-127 evaluation module (EVM) provides designers with an easy layout for using and evaluating the TPS76901 SOT-23 LDO in an application to regulate from 5 V to a selectable output. The EVM includes input and output capacitors.
TPS76933EVM-127 — 適用於具有 5-V 至 3.3-V 輸出電源供應器之 SOT-23 LDO 電壓穩壓器的 TPS76933 評估模組
TPS76933EVM-127 評估模組 (EVM) 可為設計人員提供簡易佈局，以使用和評估應用中的 TPS76933 SOT-23 LDO，藉此從 5 V 調節至 3.3-V 輸出。此 EVM 包括輸入與輸出電容器。
TPS79328EVM — TPS79328 評估模組
The purpose of this EVM is to facilitate evaluation of the TPS793xx family of LDO regulators. Each EVM package contains one SLVP191 test board, with either a TPS79301DBV linear regulator or a TPS79328DBV linear regulator, as well as supporting passive components. The TPS79301DBV adjustable device (...)
TIDM-RF430FRLSENSE — RF430FRL152H NFC 溫度及燈光感測器參考設計
此參考設計提供評估 RF430FRL152H NFC 感測器介面轉發器的平台。 熱敏電阻和光電晶體測量功能開箱即用，測得的結果可傳輸到支援 NFC 的智慧型手機或其他 NFC/RFID 讀取器裝置。 此參考設計搭配電池運作時可將資料記錄至 FRAM；不使用電池時則可使用 RF 電場所收集的能量。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 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。