UCC281DP-ADJG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC281DP-ADJG4 is an adjustable low-dropout linear voltage regulator from Texas Instruments delivering up to 1 A output current with a typical dropout voltage of only 0.5 V and an adjustable output range of 1.22 V to 8.85 V. It offers tight line regulation of 0.03%/V and load regulation of 0.4% maximum for stable, precise power rails. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- UCC281DP-ADJG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UCC281DP-ADJG4?
- Adjustable output voltage from 1.22 V to 8.85 V set via two external resistors, providing design flexibility for a wide range of power supply requirements
- Ultra-low dropout voltage of 0.5 V typical and 0.6 V maximum at 1 A allows operation with input voltages close to the output, maximizing efficiency in battery-powered applications
- Tight load regulation of 0.4% maximum and line regulation of 0.03%/V ensures stable output under varying loads and input conditions
- 1 A continuous output current capability in a compact 8-pin SOIC package suits space-constrained board designs
- RoHS-compliant lead-free construction with green packaging meets modern environmental regulations for consumer, industrial, and automotive markets
What is UCC281DP-ADJG4 used for?
The UCC281DP-ADJG4 is used as a post-regulator in power supplies for microcontrollers, FPGAs, DSPs, and analog circuits where a clean, precisely regulated voltage rail is required from a higher input supply. Its low dropout voltage makes it particularly suited to battery-powered portable instruments, handheld devices, and wireless sensor nodes where maximizing battery life by minimizing input-to-output voltage headroom is critical. The device also serves as an adjustable reference voltage source and bias supply in industrial measurement equipment, telecommunications hardware, and embedded control systems.
What are the specifications of UCC281DP-ADJG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Adjustability | ADJUSTABLE |
| Dropout Voltage1-Max | 0.6V |
| Dropout Voltage1-Nom | 0.5V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Line Regulation-Max (%/V) | 0.03 |
| Load Regulation-Max(%) | 0.4% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 150°C |
| Operating Temperature TJ-Min | -55 °C |
| Output Current1-Max | 1A |
| Output Voltage1-Max | 1.28V |
| Output Voltage1-Min | 1.22V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BICMOS |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| 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 UCC281DP-ADJG4 datasheet?
UCC281DP-ADJG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UCC281DP-ADJG4?
Compatible alternatives and drop-in replacements for UCC281DP-ADJG4:
Adjustable Positive LDO Regulator, 1.2V Min, 8.8V Max, 0.6V Dropout, BICMOS, PDSO8
Frequently Asked Questions
How is the output voltage of the UCC281DP-ADJG4 set?
The output voltage of the UCC281DP-ADJG4 is set using two external resistors connected between the ADJ pin and ground. The output voltage range is adjustable from 1.22 V to 8.85 V. The 1.22 V internal reference voltage and the resistor ratio determine the programmed output level, allowing flexibility across a wide range of power supply designs.
What is the dropout voltage of the UCC281DP-ADJG4?
The UCC281DP-ADJG4 has a typical dropout voltage of 0.5 V and a maximum of 0.6 V at a full output current of 1 A. This low dropout characteristic means the device can regulate correctly with the input voltage as little as 0.6 V above the desired output, which is important in battery-powered or low-headroom power conversion applications.
What package does the UCC281DP-ADJG4 use?
The UCC281DP-ADJG4 is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) package, identified by the 'D' in the part number suffix. This surface-mount package has a 1.27 mm pin pitch and is compatible with standard PCB footprints, making it easy to assemble in volume production using automated pick-and-place equipment.
What are the line and load regulation specifications for the UCC281DP-ADJG4?
The UCC281DP-ADJG4 achieves a maximum line regulation of 0.03%/V and a maximum load regulation of 0.4%. These tight specifications mean the output voltage remains very stable over changes in input voltage and output load current, making the device suitable for precision analog and mixed-signal circuits where supply noise and variation affect measurement accuracy.
What are common applications for the UCC281DP-ADJG4?
Common applications include post-regulation of switching power supply outputs, generating bias voltages for op-amps and analog front ends, powering microcontrollers and DSPs from higher-voltage rails, and providing adjustable reference voltages in test equipment. Its 1 A current capability and low dropout voltage suit battery-powered portable instruments, embedded systems, and industrial sensor interfaces requiring stable and adjustable power supplies.
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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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