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UCC39412PW
Texas Instruments
IC REG BOOST 3.3V 60MA 8TSSOP
1528 Pcs New Original In Stock
Boost Switching Regulator IC Positive Fixed 3.3V 1 Output 60mA 8-TSSOP (0.173", 4.40mm Width)
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5.0 / 5.0
- (51 Ratings)
UCC39412PW
Product Overview
1832508
DiGi Electronics Part Number
UCC39412PW-DGManufacturer
Texas Instruments
UCC39412PW
Description
IC REG BOOST 3.3V 60MA 8TSSOPInventory
1528 Pcs New Original In Stock
Boost Switching Regulator IC Positive Fixed 3.3V 1 Output 60mA 8-TSSOP (0.173", 4.40mm Width)
Quantity
Minimum 1
Minimum 1
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UCC39412PW Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - DC DC Switching Regulators
Packaging
Bulk
Series
-
Product Status
Obsolete
Function
Step-Up
Output Configuration
Positive
Topology
Boost
Output Type
Fixed
Number of Outputs
1
Voltage - Input (Min)
1.1V
Voltage - Input (Max)
3.2V
Voltage - Output (Min/Fixed)
3.3V
Voltage - Output (Max)
-
Current - Output
60mA
Frequency - Switching
-
Synchronous Rectifier
Yes
Operating Temperature
0°C ~ 70°C (TJ)
Mounting Type
Surface Mount
Package / Case
8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package
8-TSSOP
Base Product Number
UCC39412
Datasheet & Documents
HTML Datasheet
UCC39412PW-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
UCC39412PWG4
TEXTISUCC39412PW
2156-UCC39412PW-TI
296-13443-5
UCC39412PWG4-DG
-UCC39412PW-NDR
Standard Package
150
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Un fournisseur sur lequel je peux toujours compter en termes de stock et d’assistance.
de desembre 02, 2025
サポートの対応が親切で、安心して取引できます。
de desembre 02, 2025
The sustainable packaging materials used are environmentally friendly and well-designed.
de desembre 02, 2025
The support staff are friendly and efficient, making my purchasing experience stress-free.
de desembre 02, 2025
Every interaction with DiGi Electronics demonstrates their commitment to excellence.
de desembre 02, 2025
DiGi Electronics consistently delivers high-quality products that exceed expectations.
de desembre 02, 2025
We find their prices to be highly competitive and beneficial.
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Frequently Asked Questions (FAQ)
Can the UCC39412PW be used in low-voltage battery-powered designs where the input voltage drops below 1.8V, and how does it maintain regulation under those conditions?
Yes, the UCC39412PW is specifically designed for low-voltage battery applications, with a minimum input voltage of 1.1V, making it suitable for single-cell alkaline, NiMH, or lithium primary batteries that drop below 1.8V during discharge. It maintains stable 3.3V output regulation through its internal synchronous rectification and optimized boost topology. However, as input voltage decreases, input current increases for the same output power—ensure the battery can sustain the higher current pulse demand to avoid premature cutoff. Also, account for reduced efficiency at lower VIN to maximize battery life, especially in portable or remote IoT devices where power budgets are tight.
Is the UCC39412PW pin-to-pin or functionally compatible with the TPS61020DBVR, and what design changes are needed when substituting between them?
The UCC39412PW is not pin-to-pin compatible with the TPS61020DBVR, despite both being fixed 3.3V boost converters in 8-TSSOP packages. Key differences include feedback structure (fixed vs adjustable in TPS61020) and enable logic behavior. Replacing the TPS61020DBVR with the UCC39412PW requires removing external feedback resistors (not needed) and verifying enable threshold compatibility—UCC39412PW has a tighter enable input range. Additionally, check thermal performance: the UCC39412PW lacks thermal shutdown protection, unlike the TPS61020, increasing risk under sustained overload. Designers should evaluate transient load response and current limits when migrating.
What are the reliability risks of using the UCC39412PW in industrial applications near the upper end of its 70°C operating temperature range?
Using the UCC39412PW near its 70°C maximum junction temperature increases long-term reliability risks, especially in poorly ventilated or enclosed industrial environments. While the device operates within specification at this limit, sustained high temperatures accelerate electromigration and oxide degradation, potentially leading to early failure. Additionally, the UCC39412PW is marked as obsolete, so long-term supply and field replacement are concerns for industrial products with 10+ year lifecycles. Derating current load by 20–30% and adding PCB copper pour for heatsinking can mitigate thermal stress. Consider implementing predictive maintenance or monitoring for field-deployed systems relying on this component.
How does the synchronous rectifier in the UCC39412PW improve efficiency compared to non-synchronous boost regulators like the MAX662A, and where does this matter most?
The internal synchronous rectifier in the UCC39412PW eliminates the forward voltage drop of a Schottky diode found in non-synchronous devices like the MAX662A, improving efficiency by 8–15% in low-output-current applications (e.g., 10–50mA). This is critical in battery-powered systems such as portable sensors or wearables where even small efficiency gains extend runtime. At light loads, however, ensure the UCC39412PW’s quiescent current aligns with your power-saving requirements—some non-synchronous parts have lower IQ. Also, the reduced heat generation simplifies thermal design in space-constrained layouts, reducing risk of thermal derating or reliability issues on dense boards.
What PCB layout best practices should be followed when designing in the UCC39412PW to minimize EMI and ensure stable operation in noise-sensitive applications?
To minimize EMI and ensure stability with the UCC39412PW, keep the input capacitor (10μF X5R ceramic) as close as possible to VIN and GND pins with short, wide traces to reduce loop inductance. Use a solid ground plane and place the inductor (typically 4.7μH–10μH) immediately after the SW pin, avoiding sharp bends in the high-current path. Route sensitive analog nodes (EN, FB) away from switching paths to prevent noise coupling. Include a 100nF ceramic bypass capacitor with minimal pad length. Thermal performance relies on the exposed pad—ensure proper solder connection to internal ground layers for heat dissipation. Poor layout can cause voltage ringing, EMI interference with RF circuits, or instability under dynamic loads.
Quality Assurance (QC)
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UCC39412PW CAD Models
Texas Instruments UCC39412PW PCB symbols & footprints
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