Texas Instruments TPS7A8101QDRBRQ1 Datasheet
The Texas Instruments TPS7A8101QDRBRQ1 is an automotive-grade, low-noise, high-PSRR, low-dropout 1-A linear regulator designed for noise-sensitive power applications. It supports an adjustable output voltage from 0.8 V to 6 V, an input voltage range of 2.2 V to 6.5 V, and operation across a -40°C to +125°C ambient temperature range. The part is AEC-Q100 qualified and integrates enable control, over-current protection, and overtemperature protection.
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Part Number: TPS7A8101QDRBRQ1
Manufacturer: Texas Instruments
Stock: 10k pcs
Date Code: 22+
Package: SON8
TPS7A8101QDRBRQ1 Technical Specifications
| Parameter | Specification |
| Manufacturer | Texas Instruments |
| Part Type | Automotive 1-A Adjustable LDO |
| Input Voltage | 2.2 V to 6.5 V |
| Adjustable Output | 0.8 V to 6 V |
| Output Current | Up to 1 A |
| Operating Temperature | -40°C to +125°C |
| Automotive Qualification | AEC-Q100 |
| Typical Dropout | 170 mV at 1 A |
| PSRR | 80 dB at 1 kHz; 60 dB at 100 kHz; 54 dB at 1 MHz |
| Output Noise | 23.5 µVRMS typical, 100 Hz–100 kHz |
| Package | VSON/SON-8, DRB, 3 mm × 3 mm |
| RoHS | Yes |
The datasheet specifies a 1-A output capability, adjustable output range, high PSRR, low noise, and a 3 mm × 3 mm SON-8 package. TI's latest package addendum also lists TPS7A8101QDRBRQ1 as Active Production and RoHS compliant, with a -40°C to +125°C operating temperature range.
Key Performance Advantages
For automotive and RF-related designs, power-supply noise and ripple rejection can directly affect system performance. TPS7A8101QDRBRQ1 delivers 60 dB PSRR at 100 kHz and 54 dB at 1 MHz, while maintaining low output noise. Its PMOS pass device enables low-dropout operation, with a typical dropout voltage of 170 mV at 1 A under specified conditions.
The regulator is stable with a 4.7-µF ceramic output capacitor. TI also recommends appropriate input and output capacitor selection and PCB thermal management for reliable operation.
Supply Chain and Procurement Insights
The TPS7A8101QDRBRQ1 remains listed by TI as an Active automotive part. However, current distribution data shows that lead times can vary significantly between channels. For example, DigiKey reports a manufacturer standard lead time of approximately 12 weeks, while current distributor inventory varies by region.
For production buyers, this makes independent distribution an important sourcing option when authorized-channel inventory does not match project requirements. Buyers should confirm available quantity, date codes, packaging, and delivery schedules before placing volume orders.
Alternatives and Replacement of TPS7A8101QDRBRQ1
TPS7N41-Q1 is the most relevant next-generation alternative to consider. TI explicitly identifies it as an immediate replacement for TPS7A8101-Q1. It provides 1-A output capability, AEC-Q100 qualification, a 3 mm × 3 mm DRB SON-8 package, and an adjustable 0.8 V to 5.5 V output range. It also offers lower output noise at 8 µVRMS.
However, engineers should verify the schematic and PCB pin assignment before treating it as a drop-in replacement. TI's TPS7N41-Q1 uses a different pin function arrangement despite sharing the DRB package.
For non-automotive designs where the Q1 qualification is not required, TPS7A80 can also be evaluated as a functional alternative. It offers 1-A output capability, 2.2 V to 6.5 V input, 0.8 V to 6 V adjustable output, and a similar 3 mm × 3 mm SON package.
Applications of TI TPS7A8101QDRBRQ1
TPS7A8101QDRBRQ1 is suitable for applications requiring a clean, stable low-voltage supply, including:
Automotive ADAS ECUs
Automotive RF power supplies
Telematics control units
Audio systems
PLL and VCO power rails
High-speed interface circuits
Noise-sensitive analog circuits
These applications are specifically identified in the TI datasheet.
Package Dimension of TPS7A8101QDRBRQ1
The TPS7A8101QDRBRQ1 uses an 8-pin SON/DRB VSON package measuring 3 mm × 3 mm, with an exposed thermal pad. The thermal pad should be properly connected to the PCB to support thermal and mechanical performance.
What Is the Difference Between TPS7A8101QDRBRQ1 and TPS7N41-Q1?
Both are automotive-grade 1-A adjustable LDO regulators with high PSRR and a DRB SON-8 package. TPS7N41-Q1 is the newer TI replacement, offering lower noise and lower quiescent current. However, the electrical specifications and pin functions are not identical, so engineers should review the latest datasheets and validate the PCB design before substitution.
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