The TPS797xx family of low-dropout voltage regulators (LDOs) offers the benefits of low-dropout voltage and ultra-low-power operation. The device is stable with any capacitor greater than 0.47-µF. Therefore, implementations of this device require very little board space due to the miniaturized packaging and potentially small output capacitor. In addition, the family includes an integrated open drain active-high power good (PG) output. Intended for use in microcontroller-based, battery-powered applications, the TPS797xx family low dropout and ultra-low-power operation result in a significant increase in system battery operating life. The small packaging minimizes consumption of board space.
The device is enabled when the applied voltage exceeds the minimum input voltage. The usual PNP pass transistor has been replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low (typically, 105 mV at 10-mA of load current), and is directly proportional to the load current. The quiescent current is ultra-low (1.2-µA, typically) and is stable over the entire range of output load current (0 mA to 50 mA). When properly configured with a pullup resistor, the PG output can implement a power-on reset or low-battery indicator.
| Typ | Titel | Datum | ||
|---|---|---|---|---|
| * | Data sheet | TPS797xx Ultra-Low IQ, 50-mA Low-Dropout Linear Regulators With Power Good Output in SC70 Package datasheet (Rev. J) | PDF | HTML | 23 Dez 2016 |
| White paper | Understanding the Foundations of Quiescent Current in Linear Power Systems | 18 Feb 2021 | ||
| Application note | LDO Noise Demystified (Rev. B) | PDF | HTML | 18 Aug 2020 | |
| Application note | A Topical Index of TI LDO Application Notes (Rev. F) | 27 Jun 2019 | ||
| Application note | LDO PSRR Measurement Simplified (Rev. A) | PDF | HTML | 09 Aug 2017 | |
| EVM User's guide | TPS79733EVM LDO Regulator Evaluation Module (Rev. A) | 02 Jun 2003 |
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The purpose of this EVM is to facilitate evaluation of the TPS797xx family of LDO regulators. Each EVM package contains an SLVP199 test board with a TPS79733DCK low dropout linear regulator as well as supporting passive components. Also, the board's small size and side clips facilitate attaching it (...)
| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| SOT-SC70 (DCK) | 5 | Ultra Librarian |
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