0.602-mm × 0.602-mm power DSBGA
The TPS7A21 is an ultra-small, low-dropout (LDO) linear voltage regulator that can source 500 mA of output current. The device provides low noise, high PSRR, and excellent load and line transient performance to meet the requirements of RF and other sensitive analog circuits. Innovative design techniques result in low-noise performance without the addition of an external noise bypass capacitor. With the device low quiescent current, the TPS7A21 is a good choice for battery-powered systems. The 2.0-V to 6.0-V input voltage range and 0.8-V to 5.5-V output voltage range support a variety of system requirements. The internal precision reference circuit enables excellent accuracy; the maximum output voltage tolerance is 1.5% over load, line, and temperature variations.
An internal soft-start circuit helps control the inrush current, thus minimizing the input voltage drop during start up. The LDO is stable with small ceramic capacitors, allowing for a small overall solution size.
A smart enable input circuit with an internally controlled pulldown resistor keeps the LDO disabled even when the EN pin is unconnected and helps eliminate external components that are otherwise required to pull down the EN input.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | TPS7A21 500-mA, Low-Noise, Low-IQ, High-PSRR LDO datasheet (Rev. A) | PDF | HTML | Sep 21, 2022 |
| White paper | Demystifying LDO Turn-On (Start-Up) Time (Rev. B) | PDF | HTML | Mar 10, 2026 | |
| Application note | High Quality Low-Dropout Regulator Measurement Techniques (Rev. A) | PDF | HTML | Jul 2, 2025 | |
| User guide | TPS7A21EVM-059 User's Guide | PDF | HTML | Oct 8, 2021 |
For additional terms or required resources, click any title below to view the detail page where available.
The TPS7A21 evaluation module (EVM) helps design engineers evaluate the operation and performance of the TPS7A21 linear regulator for use in their own circuit application. This EVM configuration contains a single low-noise, small-size, low-dropout (LDO)regulator for a wide range of applications.
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| POWERWCSP (YWD) | 4 | Ultra Librarian |
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