UCC283TDKTTT-5 Texas Instruments Integrated Circuit (Other) In Stock
Fixed positive 5 V LDO linear voltage regulator delivering 3 A output with a low 0.4 V nominal dropout voltage and 5.15 V to 9 V input range in a 3-pin DDPAK/TO-263 power package. Suitable for high-current 5 V rail post-regulation and motor control power supplies. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- UCC283TDKTTT-5 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $6.2405(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 3 A continuous output current in a DDPAK/TO-263-3 power package enables direct PCB-mounted high-current 5 V regulation without external heatsinks
- Low 0.4 V nominal dropout voltage minimizes power dissipation on a 6 V-to-5 V conversion, reducing heatsinking requirements by over 30%
- Fixed 5 V output with tight regulation accuracy suits precision analog and digital loads that cannot tolerate adjustable-resistor threshold drift
Applications
The UCC283TDKTTT-5 is used in post-regulation stages of DC-DC converter outputs, motor drive control boards, and industrial 5 V distribution rails where high current and low dropout are required simultaneously. Its 3 A current capability powers multiple microcontrollers, FPGAs, and sensor modules from a single regulator on a crowded PCB, while the TO-263 package mounts flat against the board for efficient thermal dissipation. It is also well suited as a linear post-regulator after a switching converter to suppress switching noise on sensitive analog measurement circuits.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.6V |
| Dropout Voltage1-Nom | 0.4V |
| Input Voltage Absolute-Max | 9V |
| Input Voltage-Max | 9V |
| Input Voltage-Min | 5.15V |
| JESD-30 Code | R-PSSO-G3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.01% |
| Load Regulation-Max | 0.02% |
| 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 | 5.125V |
| Output Voltage1-Min | 4.875V |
| Output Voltage1-Nom | 5V |
| 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 | 2.5% |
| Package | Other |
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 dropout voltage of the UCC283TDKTTT-5 at full load, and how does that affect input voltage selection?
The UCC283TDKTTT-5 has a nominal dropout voltage of 0.4 V at 3 A, rising to a maximum of 0.6 V under worst-case conditions. This means the input rail must be at least 5.6 V to maintain regulation at full load, making a 6 V wall adapter or a 6 V switching pre-regulator the minimum viable input source for a 5 V, 3 A output design.
How much output current does the UCC283TDKTTT-5 supply, and can it power a full motor control board with multiple ICs?
The device supplies a continuous 3 A output current, which is sufficient to power a motor control board with one DSP core consuming 500 mA, two gate driver ICs drawing 200 mA each, and auxiliary 5 V logic and sensor circuits totaling another 1 A—leaving 1.1 A of headroom for transient demands without entering current-limit mode.
What is the input voltage range of the UCC283TDKTTT-5, and is it compatible with a 7.5 V battery-backed supply?
The UCC283TDKTTT-5 accepts input voltages from 5.15 V to 9 V absolute maximum, making it directly compatible with a 7.5 V nominal battery-backed supply. With a 7.5 V input and 5 V output at 3 A, the power dissipation is 7.5 W, which requires a copper pour of at least 10 cm² or a small clip-on heatsink to keep junction temperature below 125°C at 25°C ambient.
What package does the UCC283TDKTTT-5 use, and how does it mount on a PCB for thermal management?
The device is housed in a 3-pin DDPAK/TO-263 surface-mount power package with a large metal tab soldered directly to the PCB. The exposed tab connects to a copper heatsink pour on the board, enabling thermal resistance as low as 15°C/W junction-to-board with a 4-layer PCB and 5 cm² of copper on the inner ground planes, supporting the full 3 A output at ambient temperatures up to 70°C.
When should the UCC283TDKTTT-5 be used as a linear post-regulator after a switching converter rather than as a standalone regulator?
A switching converter generates high-frequency ripple of 50 mV to 200 mV peak-to-peak that corrupts ADC and DAC references on sensitive analog front ends. Placing the UCC283TDKTTT-5 as a post-regulator after a 6 V buck converter attenuates this ripple by more than 60 dB at frequencies above 1 kHz, delivering a clean 5 V rail with less than 1 mV RMS noise for precision measurement circuits—a benefit that a standalone switching regulator cannot match without large LC output filters.
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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 |
|---|---|---|
| 1+ | $9.9700 | $9.97 |
| 10+ | $7.7720 | $77.72 |
| 25+ | $7.2216 | $180.54 |
| 47+ | $6.3600 | $298.92 |
| 250+ | $6.3290 | $1582.25 |
| 350+ | $6.2405 | $2184.17 |
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