UCC383TDTR-3 Texas Instruments Integrated Circuit (TO-XXX (Inc. DPAK)) In Stock
UCC383TDTR-3 is a fixed 3.3V, 3A low-dropout linear voltage regulator with 0.4V typical dropout voltage and up to 9V input. Ideal for battery-powered and noise-sensitive applications. From $4.07, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- TO-XXX (Inc. DPAK)
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- UCC383TDTR-3 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.0700(MOQ 47)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 3.3V output with tight regulation accuracy for stable power delivery
- Low 0.4V typical dropout voltage (1V max) enables efficient operation near output voltage
- High 3A output current supports demanding load applications
- Wide 3.45V to 9V input voltage range for flexible power source compatibility
- TO-DPAK package with exposed pad for enhanced thermal dissipation
- RoHS compliant (Pb-free) construction for green design requirements
Applications
The UCC383TDTR-3 is well-suited for post-regulation in DC-DC converter outputs, providing clean 3.3V rails for microcontrollers, FPGAs, and DSPs in industrial and communications equipment. Its low dropout characteristic makes it ideal for battery-powered portable devices where input voltage closely tracks the 3.3V output. The device also finds use in automotive and telecom power supply designs requiring robust 3A continuous current with good thermal performance.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 1V |
| Dropout Voltage1-Nom | 0.4V |
| Input Voltage Absolute-Max | 9V |
| Input Voltage-Max | 9V |
| Input Voltage-Min | 3.45V |
| JESD-30 Code | R-PSSO-G3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.007% |
| Load Regulation-Max | 0.015% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 150°C |
| Operating Temperature TJ-Min | -55 °C |
| Output Current1-Max | 3A |
| Output Voltage1-Max | 3.58V |
| Output Voltage1-Min | 3.22V |
| Output Voltage1-Nom | 3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP3H,.55TB |
| 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 | BICMOS |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.54mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 2.4% |
| Package | TO-XXX (Inc. DPAK) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage and maximum output current of the UCC383TDTR-3?
The UCC383TDTR-3 provides a fixed 3.3V output voltage with a maximum continuous output current of 3A. It features a typical dropout voltage of 0.4V (1V maximum), allowing it to maintain regulation with an input voltage as low as 3.45V.
What is the input voltage range for the UCC383TDTR-3?
The UCC383TDTR-3 accepts an input voltage ranging from 3.45V minimum to 9V maximum (absolute maximum). This wide input range makes it compatible with various power sources including 5V and 9V supplies commonly found in embedded and industrial systems.
What are typical applications for the UCC383TDTR-3 LDO regulator?
Typical applications include powering 3.3V logic rails for microcontrollers, FPGAs, and ASICs, post-regulation after switching converters to reduce ripple, battery-powered portable electronics, and industrial control systems. Its 3A output capability supports high-current digital loads efficiently.
What package does the UCC383TDTR-3 come in, and are there lead-free options?
The UCC383TDTR-3 is available in a TO-DPAK (PSSO-3) surface-mount package, which provides excellent thermal performance through its exposed metal tab. It is fully RoHS compliant and Pb-free (Pbfree Code: Yes), meeting modern environmental regulations for lead-free assembly processes.
How does the UCC383TDTR-3 compare to adjustable LDO regulators?
Unlike adjustable LDOs that require external resistors to set output voltage, the UCC383TDTR-3 has a fixed 3.3V output, simplifying PCB design and reducing component count. This fixed configuration also improves reliability by eliminating resistor tolerance errors, making it preferred when a precise 3.3V rail is needed.
Related Guides
150141RS73100 Red LED Indicator and Current-Resistor Design Guide
Design a reliable 150141RS73100 red LED indicator with worst-case resistor sizing, GPIO checks, PWM drive, layout, and production validation.
Jul 11, 2026
742792651 Ferrite Bead EMI Filter and Power Integrity Design Guide
Practical guidance for using 742792651 in ferrite-bead EMI filters, including bias, DCR, damping, layout, and validation.
Jul 11, 2026
How to Choose a Ferrite Bead for EMI Suppression Rails: Selection Guide
Compare 742792651 and related ferrite beads by impedance, current rating, DCR, package, layout, and EMI test context.
Jul 10, 2026
150141BS73100 Design Guide for 3528 Status Indicator LED Circuits
Design 3528 status indicator LED circuits with 150141BS73100: current setting, resistor sizing, polarity, optics, and sourcing checks.
Jul 10, 2026
Why Buy from FindMyChip
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 |
|---|---|---|
| 47+ | $6.3600 | $298.92 |
| 500+ | $4.5800 | $2290.00 |
| 1000+ | $4.3300 | $4330.00 |
| 10000+ | $4.0700 | $40700.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”