UCC39412PWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
UCC39412PWG4 is a current-mode boost converter in an 8-pin TSSOP package, accepting input voltages from 1.1 V to 3.2 V and delivering a regulated 3.3 V output at up to 60 mA with a 500 kHz switching frequency. It targets low-voltage battery-powered applications requiring a compact step-up solution. Ideal for single-cell Li-ion, alkaline, or coin-cell powered portable devices needing 3.3 V rail generation.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- UCC39412PWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UCC39412PWG4?
- Input voltage range 1.1 V to 3.2 V enabling single-cell battery operation
- Current-mode control at 500 kHz switching frequency for fast transient response
- Fixed 3.3 V regulated output with up to 60 mA output current
- 8-pin TSSOP package for compact PCB footprint in space-constrained designs
- RoHS-compliant (Pb-free, e4) for green supply chain compliance
- Integrated oscillator eliminates external timing components
What is UCC39412PWG4 used for?
The UCC39412PWG4 is designed for portable consumer electronics and IoT sensor nodes that run from single-cell batteries such as AAA, AA, or coin cells with nominal 1.25 V output. It generates a stable 3.3 V rail at 60 mA to power microcontrollers, RF transceivers, and low-power sensors in handheld devices, remote controls, and wearable gadgets. Its 500 kHz operation and TSSOP-8 form factor also suit compact industrial wireless nodes and data-logger modules where board space is highly constrained.
What are the specifications of UCC39412PWG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Input Voltage-Max | 3.2V |
| Input Voltage-Min | 1.1V |
| Input Voltage-Nom | 1.25V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 0.715A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 500kHz |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| 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 UCC39412PWG4 datasheet?
UCC39412PWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UCC39412PWG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range and output specification of UCC39412PWG4?
The UCC39412PWG4 accepts input voltages from 1.1 V to 3.2 V and delivers a fixed 3.3 V regulated output at up to 60 mA. Its nominal input of 1.25 V makes it directly compatible with single alkaline or NiMH cells, and the 500 kHz switching frequency allows the use of compact external inductors and capacitors on the PCB.
Which battery chemistries are compatible with UCC39412PWG4 for portable designs?
Because the UCC39412PWG4 operates down to 1.1 V input, it is compatible with single-cell alkaline batteries (nominally 1.5 V, discharged to 1.0 V), NiMH cells (1.2 V nominal), and coin cells such as CR2032 (3 V, within the 3.2 V maximum). This wide 1.1 V to 3.2 V input window ensures the 3.3 V output rail stays regulated across most of each cell's discharge curve.
How does the current-mode control of UCC39412PWG4 benefit transient load response?
Current-mode control in the UCC39412PWG4 senses the inductor current on a cycle-by-cycle basis, allowing the converter to respond immediately to load steps without waiting for voltage-loop feedback. This results in faster transient recovery on the 3.3 V rail compared to voltage-mode controllers, which is critical when an MCU or RF module draws burst currents of 30–60 mA during transmit events in portable IoT devices.
What external components are needed to complete a UCC39412PWG4 boost converter circuit?
A typical UCC39412PWG4 application requires an external inductor (typically 4.7 µH to 10 µH), an input capacitor (4.7 µF), an output capacitor (10 µF), a Schottky rectifier diode, and optionally an enable pull-up resistor. The 8-pin TSSOP package keeps the total solution footprint under 50 mm², making it suitable for compact portable PCBs powered by single-cell batteries at 1.1 V to 3.2 V input.
Is UCC39412PWG4 suitable for wireless sensor node designs requiring 3.3 V from a coin cell?
Yes, the UCC39412PWG4 can boost a CR2032 coin cell (3.0 V nominal, minimum approximately 2.0 V) or an AAA alkaline cell (1.5 V nominal) to a stable 3.3 V rail at 60 mA, sufficient to power a BLE SoC, a sub-GHz RF transceiver, or a MEMS sensor node. At 500 kHz switching, the external inductor and filter capacitor remain small, fitting within a compact wireless sensor PCB of 20 mm × 20 mm or smaller.
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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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