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Texas Instruments UCC283TDKTTT-5
- Part No.:
- UCC283TDKTTT-5
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Datasheet:
-
UCC283TDKTTT-5.pdf
- Description:
- IC REG LIN 5V 3A DDPAK/TO263-3
- Quantity:
- Payment:
- Shipping:
Inventory:185
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Product details
Overview
UCC283TDKTTT-5 from Texas Instruments is a fixed-output 5 V, 3 A positive linear series pass voltage regulator in TO-263-3 (DDPAK) package, featuring 0.45 V typical dropout at 3 A load, <650 µA quiescent current independent of load, and integrated thermal shutdown and short-circuit protection with 3% duty-cycle pulsed fault limiting. It serves as a low-dropout power supply for industrial embedded systems requiring stable 5 V rail under high-current, low-headroom conditions.
For engineers reviewing the UCC283TDKTTT-5 datasheet, UCC283TDKTTT-5 pinout, UCC283TDKTTT-5 application, or UCC283TDKTTT-5 equivalent, key selection criteria include dropout performance at full load, reverse leakage (<75 µA), guaranteed 4.875–5.125 V output tolerance over −40°C to 85°C, and compatibility with minimal external components-no mandatory output capacitor required due to internal compensation.
Technical Context
The UCC283TDKTTT-5 employs BiCMOS process technology with an internal charge pump (VPUMP) to drive the N-channel MOSFET pass element, enabling low RDS(on) and sub-0.5 V dropout at 3 A. Its feedback loop is internally compensated, eliminating minimum output capacitance requirements.
It integrates reverse voltage sensing to limit VOUT-to-VIN leakage to ≤75 µA, undervoltage lockout (UVLO) activation at 2.5–3 V, and thermal shutdown at 165°C with 20°C hysteresis. Short-circuit protection operates via fixed 750 µs tON and 32×tON tOFF, yielding a 3% average duty cycle during sustained faults.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V, regulated to ±1.25% (4.875–5.125 V) over −40°C to 85°C |
| Dropout Voltage | 0.45 V typical at 3 A load; ensures regulation with only 5.45 V input for 5 V output |
| Quiescent Current | <650 µA at no load, constant across full load range-critical for battery-backed or low-power standby |
| Short-Circuit Duty Cycle | 3% fixed average (tON = 750 µs, tOFF = 24 ms), reducing average fault power dissipation by >97% |
| Reverse Leakage | <75 µA when 1 V < VIN < VOUT, preventing backfeed in multi-rail or hot-swap systems |
| Thermal Shutdown | Triggers at 165°C junction temperature; device remains off until TJ drops to 145°C |
| Operating Temperature | −40°C to +85°C ambient-qualified for industrial-grade reliability without derating |
Pinout & Package
UCC283TDKTTT-5 is housed in a surface-mount TO-263-3 (DDPAK) thermally enhanced package with exposed drain pad for PCB heat sinking. Pin 1 = VOUT, Pin 2 = GND, Pin 3 = VIN.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Regulated output terminal | Delivers stable 5 V; no mandatory output capacitor-supports fast transient response with optional 10–22 µF ceramic |
| GND (Pin 2) | Reference ground node | Common return for internal error amplifier, UVLO, and thermal sensor; must be low-impedance connection to minimize noise |
| VIN (Pin 3) | Input supply terminal | Accepts 5.45–9 V input; requires ≥1 µF low-ESL/ESR bypass capacitor to GND near pin for stability |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Architecture | 0.45 V at 3 A enables operation from single-cell Li-ion or 5.5 V logic rails without step-up conversion |
| No Minimum Output Capacitor | Internally compensated design eliminates mandatory COUT, reducing BOM count and board space |
| Fixed 3% Fault Duty Cycle | Reduces average short-circuit power to ~3% of peak, allowing heatsink sizing for normal operation only |
| Reverse Voltage Protection | Active sensing prevents >75 µA reverse current-enables safe OR-ing and backup power path designs |
| Industrial Temperature Range | −40°C to +85°C operation with full parameter guarantees-suitable for factory automation and outdoor equipment |
Applications
| Industrial PLC I/O Module Power | Automotive Body Control Unit (BCU) |
|---|---|
Use Scenario: Powering 5 V microcontroller, CAN transceiver, and analog sensor interfaces in DIN-rail mounted PLC modules. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying core logic and communication peripherals with tight voltage tolerance and fault resilience. Use Value: 0.45 V dropout allows direct use of 5.5 V intermediate bus; 3% short-circuit duty cycle prevents thermal runaway during field-wiring faults. |
Use Scenario: Regulating 5 V rail for microcontroller, LIN transceiver, and LED drivers in automotive body electronics. IC Role / Device Role / Timing Role: High-current, fault-tolerant 5 V supply meeting automotive ambient temperature and reverse-battery immunity requirements. Use Value: Reverse leakage <75 µA avoids battery drain during ignition-off; thermal shutdown at 165°C protects against under-hood overheating. |
| Telecom Remote Radio Unit (RRU) | Medical Point-of-Care Diagnostic Device |
Use Scenario: Providing clean 5 V bias to RF front-end ICs and ADCs in outdoor wireless base stations. IC Role / Device Role / Timing Role: Low-noise, high-stability 5 V source with minimal headroom requirement for compact, fanless enclosures. Use Value: <650 µA quiescent current minimizes standby loss; no minimum COUT simplifies layout in space-constrained RF sections. |
Use Scenario: Supplying 5 V to portable diagnostic sensors, display controllers, and USB interface circuitry. IC Role / Device Role / Timing Role: Safety-critical, low-fault-risk power stage with guaranteed thermal cutoff and predictable short-circuit behavior. Use Value: Fixed 750 µs tON ensures repeatable fault energy limiting; 4.875–5.125 V tolerance meets IEC 60601-1 voltage accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output 5 V, 3 A LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A4700RGWR | Ultra-low noise (4.7 µVRMS), 1 A max, adjustable output; higher cost, lower current rating | Preferred for precision analog/RF bias where noise dominates over current capability | Select only if noise <10 µVRMS and <1 A load are primary constraints-UCC283TDKTTT-5 delivers 3× current at lower cost and simpler layout |
| MCP1703T-5002E/MB | 300 mA max, SOT-223 package, 600 mV dropout at 250 mA; lacks thermal shutdown and short-circuit pulsing | Suitable for low-power MCU peripherals but cannot replace UCC283TDKTTT-5 in 3 A applications | Not a functional substitute-only consider for <300 mA loads where footprint and cost outweigh fault protection needs |
Compared with TPS7A4700RGWR and MCP1703T-5002E/MB, UCC283TDKTTT-5 uniquely combines 3 A continuous output, 0.45 V dropout, integrated 3% duty-cycle fault limiting, and industrial temperature range in a thermally robust TO-263-3 package-making it irreplaceable for high-current, fault-prone industrial power rails.
Availability
UCC283TDKTTT-5 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control units, telecom remote radio units, and medical point-of-care devices requiring stable component supply with guaranteed long-term manufacturability.
Supply support for UCC283TDKTTT-5 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability linear regulators and industrial-grade ICs.
The UCC283 family was designed specifically for industrial and automotive applications demanding robust low-dropout regulation at up to 3 A, emphasizing fault resilience, thermal safety, and minimal external component count.
FAQ
What is the maximum input voltage for UCC283TDKTTT-5?
The absolute maximum input voltage for UCC283TDKTTT-5 is 9 V, as specified in the Absolute Maximum Ratings table. Operation above this level risks permanent damage. For reliable regulation, VIN must exceed VOUT + dropout voltage-minimum recommended is 5.45 V (5 V + 0.45 V) at 3 A load. Input voltage should remain within 5.45–9 V for optimal performance and lifetime.
Does UCC283TDKTTT-5 require an output capacitor to function?
No, UCC283TDKTTT-5 does not require a minimum output capacitor due to internal compensation-this is explicitly stated in the datasheet. However, a 10–22 µF ceramic capacitor at VOUT is recommended to improve transient response and reduce output ripple. Larger capacitors may cause startup issues if they exceed the maximum value calculable from tON and peak current limit.
How does the short-circuit protection work on UCC283TDKTTT-5?
UCC283TDKTTT-5 uses fixed-time pulsed short-circuit protection: upon sustained overload, it shuts off for 24 ms (tOFF = 32 × 750 µs) after each 750 µs on-time (tON), resulting in a 3% average duty cycle. This limits average fault power dissipation, allowing thermal design for normal operation only. Peak current is limited to 4–10 A depending on conditions.
What is the thermal shutdown behavior of UCC283TDKTTT-5?
UCC283TDKTTT-5 triggers thermal shutdown when junction temperature exceeds 165°C. Once activated, the device remains latched off until junction temperature falls to approximately 145°C (20°C hysteresis). This prevents cycling during marginal thermal conditions and ensures safe cooldown before resuming regulation.
Can UCC283TDKTTT-5 be used in automotive applications?
Yes-UCC283TDKTTT-5 is rated for −40°C to +85°C ambient operation and features reverse leakage <75 µA, thermal shutdown, and robust short-circuit protection, making it suitable for non-safety-critical automotive body electronics such as BCMs and lighting modules. It is not AEC-Q100 qualified, so system-level validation is required for deployment in production vehicles.
UCC283TDKTTT-5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 9V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 3A
- Current - Output:
- 3A
- Current - Quiescent (Iq):
- 650 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263 (DDPAK-3)
UCC283TDKTTT-5 FAQ
1.How can I place an order for UCC283TDKTTT-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for UCC283TDKTTT-5 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for UCC283TDKTTT-5 reliable?
The price and inventory of UCC283TDKTTT-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC283TDKTTT-5 is usually 5 days.
3.What payment methods are accepted for UCC283TDKTTT-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCC283TDKTTT-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCC283TDKTTT-5?
UCC283TDKTTT-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCC283TDKTTT-5 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for UCC283TDKTTT-5?
For technical support, including UCC283TDKTTT-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC283TDKTTT-5 requirements.
6.How does Aetrix verify that UCC283TDKTTT-5 is sourced from the original manufacturer or authorized distributors?
All UCC283TDKTTT-5 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that UCC283TDKTTT-5 meets industry standards.
7.What is the process for return or replacement of UCC283TDKTTT-5?
All UCC283TDKTTT-5 units undergo pre-shipment inspection (PSI). If there is an issue with UCC283TDKTTT-5, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The UCC283TDKTTT-5 part is unused and in its original packaging.
Return procedure for UCC283TDKTTT-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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