TPS73618DCQG4 Texas Instruments Integrated Circuit (SOT223 (5-Pin)) In Stock
The TPS73618DCQG4 is a 200mA low dropout linear voltage regulator with a fixed 1.8V output, featuring ultra-low 75mV typical dropout voltage and 0.5% output accuracy. Designed for noise-sensitive applications, it provides excellent line and load regulation in a compact 6-pin SOT-223 package. Available from major distributors worldwide with competitive pricing for volume and prototype orders.
- Manufacturer
- Texas Instruments
- Package
- SOT223 (5-Pin)
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- TPS73618DCQG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 75mV typical dropout voltage enables operation with minimal input-output differential, maximizing efficiency in battery-powered systems
- Fixed 1.8V output with tight ±0.5% accuracy ensures reliable performance for precision analog and digital circuits
- Wide input voltage range of 2V to 5.5V with 200mA output current suits diverse portable and industrial power supply designs
- Compact 6-pin SOT-223 package with exposed thermal pad provides excellent heat dissipation in space-constrained PCB layouts
Applications
The TPS73618DCQG4 is well suited for powering low-voltage microcontrollers, FPGAs, and DSPs in portable consumer electronics and battery-operated IoT devices where low quiescent current and minimal dropout are critical. It also serves as a post-regulator in multi-rail power systems for noise-sensitive RF, audio, and sensor circuits requiring stable 1.8V supplies. Industrial instrumentation and handheld test equipment benefit from its high output accuracy and robust input protection up to 6V absolute maximum.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.2V |
| Dropout Voltage1-Nom | 0.075V |
| Input Voltage Absolute-Max | 6V |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2V |
| JESD-30 Code | R-PDSO-G6 |
| Line Regulation-Max | 0.01% |
| Load Regulation-Max | 0.014364% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.4A |
| Output Voltage1-Max | 1.818V |
| Output Voltage1-Min | 1.782V |
| Output Voltage1-Nom | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOT-223-5 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BICMOS |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 1% |
| Package | SOT223 (5-Pin) |
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 TPS73618DCQG4:
Frequently Asked Questions
What is the dropout voltage of the TPS73618DCQG4?
The TPS73618DCQG4 has a typical dropout voltage of 75mV and a maximum dropout voltage of 200mV at full 200mA load current, allowing efficient operation even when the input voltage is only slightly above the 1.8V output, making it ideal for single-cell Li-ion battery applications.
What input voltage range does the TPS73618DCQG4 support?
The TPS73618DCQG4 operates from an input voltage range of 2V minimum to 5.5V maximum, with an absolute maximum rating of 6V. This wide range makes it compatible with 3.3V and 5V system rails, as well as regulated and unregulated DC supplies commonly found in consumer and industrial electronics.
What package does the TPS73618DCQG4 come in and what are the thermal considerations?
The TPS73618DCQG4 is housed in a 6-pin SOT-223 package, which provides an exposed metal tab for improved thermal dissipation. The JESD-30 code is R-PDSO-G6. For thermal management, the tab should be soldered to a copper pour on the PCB to maximize heat spreading, especially when operating at maximum 200mA output current continuously.
Is the TPS73618DCQG4 RoHS compliant?
According to the part specifications, the TPS73618DCQG4 Pb-free code is listed as No, indicating it may contain lead and may not meet RoHS requirements. Designers targeting fully RoHS-compliant assemblies should verify the specific compliance status with Texas Instruments or consider alternate part options from the TPS736 family.
What are typical applications for the TPS73618DCQG4?
Typical applications include powering 1.8V microcontrollers, memory devices, FPGAs, and RF transceivers in portable electronics, IoT nodes, and industrial sensors. The device's low noise and tight output regulation also make it suitable for powering ADC reference circuits, precision op-amps, and other analog components sensitive to supply voltage variations.
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