TPS71728DCKTG4 Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
Texas Instruments TPS71728DCKTG4 is a single-output fixed 2.8 V LDO linear voltage regulator delivering up to 150 mA with a typical dropout voltage of only 170 mV. Housed in a compact SOT-23-5 package with input voltage range of 3.1 V to 6.5 V. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- TPS71728DCKTG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 170 mV typical dropout voltage at 150 mA output current enabling efficient battery-powered designs
- Fixed 2.8 V output in a tiny SOT-23-5 package minimizing BOM complexity and PCB footprint for space-constrained applications
- Wide 3.1 V to 6.5 V input voltage range with up to 7 V absolute maximum supporting single-cell Li-Ion and USB-powered systems
Applications
The TPS71728DCKTG4 is well suited for battery-powered portable electronics, IoT sensor nodes, and wearable devices where low quiescent current and minimal dropout voltage are critical. Its fixed 2.8 V output and 150 mA capacity reliably power RF modules, microcontrollers, and sensors directly from single-cell Li-Ion or two-cell alkaline battery packs. The SOT-23-5 package supports compact PCB layouts in handheld and medical devices.
Specifications
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.3V |
| Dropout Voltage1-Nom | 0.17V |
| Input Voltage Absolute-Max | 7V |
| Input Voltage-Max | 6.5V |
| Input Voltage-Min | 3.1V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.15A |
| Output Voltage1-Max | 2.884V |
| Output Voltage1-Min | 2.716V |
| Output Voltage1-Nom | 2.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP5/6,.08 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BICMOS |
| 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 | 3% |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS71728DCKTG4:
Frequently Asked Questions
What is the output voltage and maximum output current of the TPS71728DCKTG4?
The TPS71728DCKTG4 provides a fixed 2.8 V output voltage with a maximum continuous output current of 150 mA, making it suitable for powering RF transceivers, microcontrollers, and low-power sensors in compact battery-operated designs.
How low is the dropout voltage of the TPS71728DCKTG4 and why does it matter for Li-Ion battery designs?
The TPS71728DCKTG4 has a typical dropout voltage of only 170 mV at full 150 mA load, with a maximum specification of 300 mV. This low dropout allows the regulator to maintain a stable 2.8 V output even as a single-cell Li-Ion battery discharges toward 3.0 V, extending usable battery runtime significantly.
What package does the TPS71728DCKTG4 come in and what are the key PCB space implications?
The TPS71728DCKTG4 is packaged in a 5-pin SOT-23 (SOT-23-5) surface mount package, which measures approximately 2.9 mm x 1.6 mm. This compact footprint requires only 2 external bypass capacitors and enables integration into ultra-small PCB areas typical in wearable and handheld device designs.
When would an engineer select the TPS71728DCKTG4 over an adjustable LDO for a 2.8 V rail?
For a fixed 2.8 V power rail requiring no external feedback resistors, the TPS71728DCKTG4 reduces component count and eliminates resistor tolerance errors, simplifying BOM and improving output accuracy. At 150 mA maximum current, it fits most low-power digital and RF subsystems needing a stable 2.8 V supply without additional tuning components in production.
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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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