TPS7A4525KTTR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
TPS7A4525KTTR is a fixed 2.5V, 500mA ultra-low-noise LDO linear regulator by Texas Instruments. Key specs: 3V to 20V input range, 0.3V typical dropout, 36dB PSRR at 1 kHz. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- TPS7A4525KTTR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.1300(MOQ 500)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low noise output ideal for powering RF, ADC, and precision analog circuits from 3V to 20V input
- Fixed 2.5V output with 0.3V typical dropout voltage and up to 500mA continuous output current
- 36dB power supply rejection ratio (PSRR) at 1 kHz protects sensitive analog loads from supply noise
Applications
The TPS7A4525KTTR is designed for noise-sensitive analog and mixed-signal applications such as powering ADC reference circuits, RF front ends, and precision op-amp rails where supply noise directly degrades measurement accuracy. Its wide 3V to 20V input range makes it compatible with both 5V logic rails and 12V industrial supplies in a single design. The low 0.3V dropout voltage and SOT-23-5 compatible package enable compact, thermally efficient point-of-load regulation on densely populated PCBs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.45V |
| Dropout Voltage1-Nom | 0.3V |
| Input Voltage Absolute-Max | 20V |
| Input Voltage-Max | 20V |
| Input Voltage-Min | 3V |
| JESD-30 Code | R-PSSO-G5 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.01% |
| Load Regulation-Max | 0.03% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1.5A |
| Output Voltage1-Max | 2.575V |
| Output Voltage1-Min | 2.412V |
| Output Voltage1-Nom | 2.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP5H,.6,67TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 245 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.7mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 3% |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range and dropout voltage specification of TPS7A4525KTTR?
The TPS7A4525KTTR accepts an input voltage from 3V to 20V absolute maximum, covering both 5V logic rails and 12V to 15V industrial supply buses. The typical dropout voltage is 0.3V at full load, with a maximum of 0.45V, meaning the device maintains regulation with the input only 0.45V above the 2.5V output. This low dropout characteristic minimizes power dissipation and heat generation in battery-powered and thermally constrained designs.
For an ADC reference supply design, how much noise does TPS7A4525KTTR inject onto the 2.5V rail?
The TPS7A4525KTTR is characterized as an ultra-low-noise LDO, with output noise typically in the single-digit µV RMS range across the 10 Hz to 100 kHz band. Its power supply rejection ratio (PSRR) reaches approximately 36dB at 1 kHz, attenuating input supply ripple by a factor of 63 times before it reaches the output rail. This noise performance is suitable for powering 16-bit and higher resolution ADCs, precision voltage references, and RF PLLs where sub-millivolt supply noise is required.
Which applications are best served by TPS7A4525KTTR compared to a switching regulator post-filter approach?
TPS7A4525KTTR is preferred over a switching regulator with LC post-filter in applications where switching frequency harmonics, even heavily filtered, degrade SNR — for example, 12-bit to 18-bit SAR ADC supply rails, RF synthesizer VCO supplies, and low-noise op-amp V+ rails in instrumentation. The LDO approach eliminates all switching noise, trading efficiency for spectral purity. For load currents below 200mA with moderate input-output differentials under 5V, the power loss in TPS7A4525KTTR is acceptable and much simpler to design than a two-stage switching plus filter solution.
How does the fixed 2.5V output of TPS7A4525KTTR simplify BOM compared to adjustable LDO alternatives?
The fixed 2.5V output eliminates the 2-resistor voltage divider feedback network required by adjustable LDOs, removing 2 components from the BOM and reducing the risk of output voltage errors from resistor tolerances. Fixed-output devices also avoid board rework when the target voltage needs to change — the designer simply swaps the TPS7A4525KTTR for a different fixed variant. The SOT-23-5 5-pin package occupies less than 10 mm² of board area, making the regulator one of the smallest single-chip solutions for 2.5V rail generation from inputs up to 20V.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 500+ | $2.3900 | $1195.00 |
| 1000+ | $2.2600 | $2260.00 |
| 10000+ | $2.1300 | $21300.00 |
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