TPS75815KC Texas Instruments Integrated Circuit (Transistor Outline, Vertical) In Stock
TPS75815KC is a fixed 1.5 V fast-transient LDO linear regulator with 150 mV typical dropout voltage and 5.5 V maximum input. High output current capability with 300 mV maximum dropout suits DSP and FPGA core voltage rails. Available in TO-263-5 KC package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- TPS75815KC Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.2500(MOQ 3)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 150 mV typical dropout voltage enables 1.5 V regulation from 1.65 V input, maximizing battery or intermediate bus utilization in DSP power sequences
- Fast transient response suppresses load steps from DSP and FPGA dynamic current demands without requiring large external output capacitors
- Fixed 1.5 V output with 2.8 V to 5.5 V input range supports direct regulation from 3.3 V or 5 V system rails with minimal heat dissipation
- TO-263-5 power package with exposed metal tab provides superior thermal dissipation for high-current LDO applications on standard PCBs
Applications
TPS75815KC provides a clean, low-noise 1.5 V core supply for DSP processors, FPGAs, and DDR memory in embedded computing and communications boards where fast load transients require a regulator with tight output accuracy and low dropout. Its 2.8 V to 5.5 V input range allows operation directly from a 3.3 V bus or USB 5 V rail, reducing the number of power conversion stages in multi-rail board designs. The TO-263-5 package with exposed thermal pad efficiently dissipates heat during sustained high-current operation on standard FR4 PCBs in industrial and telecom equipment.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.3V |
| Dropout Voltage1-Nom | 0.15V |
| Input Voltage Absolute-Max | 6V |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.8V |
| JESD-30 Code | R-PSFM-T5 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.0045% |
| Load Regulation-Max | 0.00225% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 3A |
| Output Voltage1-Max | 1.545V |
| Output Voltage1-Min | 0.045V |
| Output Voltage1-Nom | 1.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SIP5,.1,67TB |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Packing Method | TUBE |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | NO |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 1.7mm |
| Terminal Position | SINGLE |
| Voltage Tolerance-Max | 3% |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| 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 dropout voltage of TPS75815KC at its rated output current and why does it matter for 3.3 V input designs?
TPS75815KC has a typical dropout voltage of 150 mV and a maximum of 300 mV, meaning the input supply must be at least 1.8 V to maintain regulation at 1.5 V output. When powered from a 3.3 V rail, the 1.75 V headroom is more than sufficient, keeping the LDO in regulation even during load transients and input voltage dips of several hundred millivolts.
How does TPS75815KC handle the fast load transients typical of DSP and FPGA core current demand?
TPS75815KC is designed for fast transient response, quickly recovering the 1.5 V output after sudden load current steps without excessive voltage undershoot. In practice this means DSP or FPGA power-up current surges can be handled with a modest external output bypass capacitor of 10 µF to 100 µF, reducing PCB area compared to switching regulators that may need larger LC filters.
What input voltage range does TPS75815KC support and which common power rails can directly feed it?
TPS75815KC accepts input voltages from 2.8 V to 5.5 V, with a 6 V absolute maximum rating. This allows it to be powered directly from 3.3 V system rails, 4.2 V Li-ion batteries, or 5 V USB and adapter rails, covering the most common intermediate bus voltages in embedded boards and eliminating an upstream DC-DC conversion stage.
What thermal advantages does the TO-263-5 KC package of TPS75815KC offer in high-current applications?
The TO-263-5 (D2PAK) package used for TPS75815KC includes a large exposed metal drain tab soldered directly to a PCB copper pour, providing a thermal resistance to ambient of approximately 3°C/W to 10°C/W depending on copper area. This is 5–10 times better than a standard SOIC-8 LDO package, allowing TPS75815KC to supply several hundred milliamperes continuously without a heatsink in typical industrial enclosure environments.
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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 |
|---|---|---|
| 3+ | $5.8400 | $17.52 |
| 10+ | $5.1600 | $51.60 |
| 50+ | $4.6400 | $232.00 |
| 500+ | $3.6500 | $1825.00 |
| 1000+ | $3.4500 | $3450.00 |
| 10000+ | $3.2500 | $32500.00 |
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