TPS75633KTTTG3 Texas Instruments Integrated Circuit (Other) In Stock
TPS75633KTTTG3 is a fixed 3.3 V low-dropout linear regulator with a maximum dropout voltage of 0.5 V and a 3.9 V to 5.5 V input range, housed in a 5-pin SOT-223 package. It delivers up to 1 A output current with stable regulation suitable for powering DSPs, FPGAs, and microcontrollers. RoHS-compliant (JESD-609 e3), available in stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- TPS75633KTTTG3 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.7354(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 3.3 V output with 0.25 V typical / 0.5 V maximum dropout voltage enables efficient regulation from 4 V to 5.5 V input rails common in USB and Li-Ion powered systems
- Up to 1 A continuous output current in compact 5-pin SOT-223 package with exposed pad for improved thermal dissipation on FR4 PCBs
- Stable regulation over 3.9 V to 5.5 V input range with low noise output suitable for sensitive analog and RF circuit power rails
- RoHS-compliant (JESD-609 e3) with Pb-free construction, meeting modern environmental and supply-chain compliance requirements for consumer and industrial designs
Applications
TPS75633KTTTG3 is commonly used to power 3.3 V logic rails in FPGA development boards, microcontroller modules, and mixed-signal systems supplied from a 5 V USB or adapter source. Its low 0.25 V typical dropout voltage allows efficient operation from 4 V lithium-ion or LiFePO4 cells when the battery is partially discharged, extending usable run time. The 5-pin SOT-223 package with exposed thermal pad also makes it suitable for regulated 3.3 V power in point-of-load supplies on multi-rail industrial control PCBs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.5V |
| Dropout Voltage1-Nom | 0.25V |
| Input Voltage Absolute-Max | 6V |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 3.899V |
| JESD-30 Code | R-PSSO-G5 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.00396% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 5A |
| Output Voltage1-Max | 3.399V |
| Output Voltage1-Min | 3.201V |
| Output Voltage1-Nom | 3.3V |
| 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) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | PMOS |
| 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 | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS75633KTTTG3:
Frequently Asked Questions
What is the dropout voltage of TPS75633KTTTG3 and why does it matter for 4 V lithium battery applications?
TPS75633KTTTG3 has a typical dropout voltage of 0.25 V and a maximum of 0.5 V at full load. For a lithium-ion cell discharging from 4.2 V to 3.6 V, a 0.5 V dropout means the regulator maintains its 3.3 V output down to 3.8 V input — recovering nearly the full usable capacity of the cell. This is significantly better than a standard LDO with 1 V dropout, which would lose regulation at 4.3 V and waste much of the cell capacity.
How much output current can TPS75633KTTTG3 supply and what package does it use for thermal management?
TPS75633KTTTG3 supplies up to 1 A of continuous output current in a 5-pin SOT-223 package. The SOT-223 package includes an exposed thermal pad on the bottom that can be soldered directly to a copper pour on the PCB, reducing thermal resistance to approximately 10°C/W to 15°C/W with adequate copper area. At 1 A output with a 5 V input, the device dissipates about 1.7 W, which the thermal pad can handle without an external heatsink on a two-layer FR4 board.
What is the input voltage range for TPS75633KTTTG3 and what happens if the input exceeds 5.5 V?
TPS75633KTTTG3 accepts input voltages from 3.9 V to 5.5 V in normal operation, with an absolute maximum rating of 6 V. Exceeding 5.5 V nominal input stresses the device and sustained operation above 6 V risks permanent damage. For 12 V or 9 V input supplies, a pre-regulator or switching converter stage must first step the voltage down to the 3.9 V to 5.5 V range before feeding TPS75633KTTTG3.
When would TPS75633KTTTG3 be preferred over a switching buck converter for powering a 3.3 V FPGA rail?
TPS75633KTTTG3 is preferred over a buck converter when output noise must stay below a few µV RMS — switching converters inject ripple at 100 kHz to 2 MHz that can degrade phase-locked loops and high-resolution ADC measurements. The LDO's inherently low-noise output is also simpler to implement, requiring only 10 µF input and output capacitors versus the inductor, larger capacitors, and EMI filtering a buck converter needs. For loads under 1 A on a 5 V input rail, the LDO's simplicity justifies the slightly lower efficiency compared to a switcher.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $10.8100 | $10.81 |
| 10+ | $8.4500 | $84.50 |
| 25+ | $7.8588 | $196.47 |
| 250+ | $5.8994 | $1474.84 |
| 350+ | $5.8158 | $2035.52 |
| 500+ | $5.7354 | $2867.71 |
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