TPS70251PWPG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments TPS70251PWPG4 is a dual-output LDO linear regulator providing 1.8V at 0.5A and 3.3V at 0.25A with a 6V maximum input in a 20-pin HTSSOP package. Features 0.275V max dropout and tight line regulation.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- TPS70251PWPG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TPS70251PWPG4?
- Dual fixed output rails at 1.8 V and 3.3 V from a single device, eliminating a second regulator in mixed-voltage systems
- Low dropout voltage of 0.275 V maximum enabling operation from Li-ion batteries down to 3.641 V input without output drop
- 0.5 A output on the 1.8 V rail and 0.25 A on the 3.3 V rail with 0.0056% maximum line regulation for precise analog supply
- 20-pin HTSSOP with exposed pad for enhanced thermal dissipation, supporting continuous operation at rated current without heatsink
What is TPS70251PWPG4 used for?
The TPS70251PWPG4 is optimized for portable and handheld electronics requiring dual supply rails from a single regulator, such as DSP-plus-codec audio systems, wireless sensor nodes, and battery-powered industrial handheld terminals. Its 1.8 V and 3.3 V outputs simultaneously power digital logic cores and I/O peripherals without a second discrete regulator. The compact 20-pin HTSSOP package suits space-constrained PCB layouts in medical devices and tablet accessories.
What are the specifications of TPS70251PWPG4?
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.275V |
| Dropout Voltage1-Nom | 0.17V |
| Input Voltage Absolute-Max | 7V |
| Input Voltage-Max | 6V |
| Input Voltage-Min | 3.641V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Line Regulation-Max | 0.0056% |
| Load Regulation-Max | 0.001% |
| Number of Functions | 1 |
| Number of Outputs | 2 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.5A |
| Output Current2-Max | 0.25A |
| Output Voltage1-Max | 3.366V |
| Output Voltage1-Min | 3.234V |
| Output Voltage1-Nom | 3.3V |
| Output Voltage2-Max | 1.836V |
| Output Voltage2-Min | 1.764V |
| Output Voltage2-Nom | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE MULTIPLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | PMOS |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 2% |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the TPS70251PWPG4 datasheet?
TPS70251PWPG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TPS70251PWPG4?
Compatible alternatives and drop-in replacements for TPS70251PWPG4:
Frequently Asked Questions
What are the output voltages and current ratings of the TPS70251PWPG4, and why does each rail have a different current limit?
The TPS70251PWPG4 delivers a fixed 1.8 V at up to 0.5 A on one output and a fixed 3.3 V at up to 0.25 A on the second output. The asymmetric ratings reflect typical embedded system loads where the 1.8 V core rail drives higher-current digital logic while the 3.3 V rail supplies lower-current I/O interfaces and analog peripherals.
What is the minimum input voltage needed to keep TPS70251PWPG4 outputs in regulation?
The device requires a minimum input voltage of 3.641 V to keep both outputs in regulation, since the 3.3 V output needs at least the 0.275 V maximum dropout headroom added to the output voltage, making it compatible with single-cell Li-ion batteries at end-of-discharge near 3.6 V.
How does the 20-pin HTSSOP with exposed pad help with thermal management compared to a standard SOIC package?
The exposed thermal pad on the HTSSOP-20 transfers heat directly to the PCB copper pour, lowering the junction-to-board thermal resistance by roughly 50% compared to a standard small-outline package with only lead-frame conduction, allowing the TPS70251PWPG4 to sustain 0.5 A continuous output at ambient temperatures up to 85°C without additional heatsinking.
For a dual-supply DSP design running at 1.8 V core and 3.3 V I/O, does TPS70251PWPG4 eliminate the need for two separate LDOs?
Yes. The TPS70251PWPG4 integrates both 1.8 V at 0.5 A and 3.3 V at 0.25 A outputs in a single 20-pin HTSSOP, replacing two discrete LDO regulators, reducing BOM by at least 10 components, and shrinking board area by approximately 30% in a typical DSP power tree layout.
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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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