TPS7A2045PDBVR Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
The Texas Instruments TPS7A2045PDBVR is an ultra-low-noise 300 mA fixed LDO regulator with high PSRR and a maximum dropout voltage of only 145 mV. It features low quiescent current, 0.019% maximum load regulation, and a 4.5V output in a SOT-23-5 package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- TPS7A2045PDBVR Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low-noise output with high power-supply rejection ratio (PSRR) ideal for sensitive RF, ADC, and precision analog supply rails
- Very low 145 mV maximum dropout voltage at 300 mA load enabling efficient operation with minimal input-output headroom
- Excellent 0.019% maximum load regulation and 0.162% line regulation for stable, precision voltage supply in noise-sensitive circuits
Applications
The TPS7A2045PDBVR is well suited for powering noise-sensitive components such as RF transceivers, ADC references, PLLs, and precision analog circuits where an ultra-clean supply rail is essential. Its high PSRR and ultra-low noise floor make it a preferred LDO for audio processing, medical instrumentation, and communications equipment. The compact SOT-23-5 package and low dropout voltage also make it effective in space-constrained, battery-powered IoT devices.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.145V |
| Input Voltage Absolute-Max | 6.5V |
| Input Voltage-Max | 6V |
| Input Voltage-Min | 4.8V |
| JESD-30 Code | R-PDSO-G5 |
| Line Regulation-Max | 0.162% |
| Load Regulation-Max | 0.019% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.3A |
| Output Voltage1-Max | 4.5675V |
| Output Voltage1-Min | 4.4325V |
| Output Voltage1-Nom | 4.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR, 7 INCH |
| Peak Reflow Temperature (Cel) | 260 |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 1.5% |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Philippines |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the dropout voltage of the TPS7A2045PDBVR at full load?
The TPS7A2045PDBVR has a maximum dropout voltage of 145 mV at its full 300 mA output current, which is exceptionally low and allows the regulator to maintain regulation with only a very small input-to-output voltage difference, maximizing efficiency in battery-powered applications.
Why is the TPS7A2045PDBVR considered ultra-low-noise?
The TPS7A2045PDBVR is designed with an internal noise-reduction architecture and high power-supply rejection ratio (PSRR) to deliver an extremely clean regulated output voltage, making it ideal for powering noise-sensitive loads such as ADC voltage references, RF front-ends, PLLs, and precision op-amps where output noise directly impacts system accuracy.
What is the input voltage range for the TPS7A2045PDBVR?
The TPS7A2045PDBVR operates with an input voltage from 4.8V minimum to 6V maximum, with an absolute maximum input of 6.5V. This range suits 5V USB or regulated supply rails commonly used in embedded systems, industrial sensors, and portable consumer electronics.
What package does the TPS7A2045PDBVR use and what is its footprint?
The TPS7A2045PDBVR is packaged in a 5-pin SOT-23 (R-PDSO-G5) surface-mount package, which is one of the most common small-signal IC packages with a well-established footprint, making it easy to integrate into compact PCB designs for portable, wearable, and IoT applications.
Is the TPS7A2045PDBVR suitable for RF and ADC supply applications?
Yes, the TPS7A2045PDBVR is specifically engineered for noise-sensitive supply rails. Its ultra-low output noise and high PSRR suppress power-supply interference on RF transceiver supplies, ADC AVDD pins, and PLL VCO rails, significantly improving SNR and phase noise performance in wireless and precision measurement systems.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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