TPS72618KTTR Texas Instruments (D2PAK) In Stock
TPS72618KTTR is a fixed 1.8 V low-dropout linear voltage regulator by Texas Instruments in a 5-pin SOT-23 package. Key specs: 2.12 V to 6 V input, 300 mA output current, 170 mV typical dropout voltage. From competitive pricing, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Pin Count
- 4
- Lifecycle
- OBSOLETE
- Datasheet
- TPS72618KTTR Datasheet PDF
- Price
- From $2.2957(MOQ 25)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 170 mV typical dropout voltage at 300 mA output extends battery life in Li-ion powered portable devices
- Fixed 1.8 V output with 1% accuracy supports noise-sensitive RF and DSP applications without external feedback resistors
- Tiny 5-pin SOT-23 package occupies less than 6 mm² PCB area, ideal for space-constrained wearable and IoT designs
Applications
TPS72618KTTR provides a clean, stable 1.8 V rail for microcontrollers, FPGAs, and wireless SoCs in battery-powered IoT nodes, wearables, and handheld instruments. Its low 170 mV dropout voltage allows efficient operation even as a lithium-ion cell discharges toward 2.5 V, maximizing usable battery capacity. The compact SOT-23 footprint and low quiescent current also make it suitable for post-regulation in USB-powered accessories and portable medical monitors.
Specifications
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.32V |
| Dropout Voltage1-Nom | 0.17V |
| Input Voltage Absolute-Max | 7V |
| Input Voltage-Max | 6V |
| Input Voltage-Min | 2.12V |
| JESD-30 Code | R-PSSO-G5 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.01134% |
| Load Regulation-Max | 0.0045% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 1A |
| Output Voltage1-Max | 1.836V |
| Output Voltage1-Min | 1.764V |
| Output Voltage1-Nom | 1.8V |
| 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 | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.7mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Voltage Tolerance-Max | 2% |
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 TPS72618KTTR:
Frequently Asked Questions
What is the dropout voltage of TPS72618KTTR at full load, and how does it benefit Li-ion battery designs?
TPS72618KTTR has a typical dropout voltage of only 170 mV at 300 mA output, with a maximum of 320 mV over temperature. This allows the regulated 1.8 V output to remain stable until the Li-ion cell falls to approximately 2.1 V, recovering roughly 15% more usable capacity compared to a 500 mV dropout LDO in the same circuit.
What input voltage range does TPS72618KTTR accept, and which supply rails is it compatible with?
TPS72618KTTR accepts input voltages from 2.12 V to 6 V, making it compatible with Li-ion single cells nominally at 3.7 V, 3.3 V regulated rails, and 5 V USB power inputs. The 6 V absolute maximum rating provides margin against USB transients and allows operation from a single alkaline or NiMH 4-cell pack.
How does the 5-pin SOT-23 package of TPS72618KTTR compare to an 8-pin SOIC LDO in a compact IoT wearable layout?
The SOT-23 package of TPS72618KTTR has a footprint of approximately 3 mm × 3 mm, about 60% smaller than a standard SOIC-8 at 5 mm × 4 mm, enabling tighter power supply placement adjacent to the SoC. The reduced footprint also shortens the decoupling trace length, lowering power-supply noise at the 1.8 V output in RF-sensitive applications.
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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 |
|---|---|---|
| 25+ | $2.9632 | $74.08 |
| 100+ | $2.6798 | $267.98 |
| 250+ | $2.5448 | $636.19 |
| 1000+ | $2.4165 | $2416.53 |
| 2500+ | $2.2957 | $5739.25 |
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