UCC3977PWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC3977PWG4 is a voltage-mode resonant fluorescent light (CCFL/LCD backlight) controller IC supporting 3V to 13.5V input with 12V nominal operation. It provides single-function resonant control for LCD panel backlighting in an 8-pin TSSOP small outline package. Available with worldwide shipping from authorized distributors.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- UCC3977PWG4 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $7.2353(MOQ 150)
- 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 UCC3977PWG4?
- Voltage-mode resonant control topology optimizes CCFL/fluorescent lamp drive efficiency, reducing switching losses in LCD backlight inverter designs
- Wide input voltage range from 3V to 13.5V with 12V nominal operation, enabling compatibility with multiple power supply architectures in portable and desktop display systems
- Compact 8-pin TSSOP (R-PDSO-G8) package minimizes PCB footprint in slim LCD module backlight inverter boards where board space is at a premium
- Single-function dedicated LCD backlight controller simplifies design with integrated resonant drive circuitry, reducing external component count compared to general-purpose PWM controllers
What is UCC3977PWG4 used for?
The UCC3977PWG4 is used in LCD backlight inverter circuits for notebook computers, monitors, and industrial flat-panel displays requiring resonant CCFL lamp drive with voltage-mode control. It is also applied in portable medical displays, point-of-sale terminals, and test equipment panels where efficient, low-EMI fluorescent backlight driving is needed from a 12V system bus. Its compact TSSOP package and wide input range make it well-suited for slim-profile display module backlight designs.
What are the specifications of UCC3977PWG4?
| YTEOL | 0 |
| Analog IC - Other Type | FLUORESCENT LIGHT CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | RESONANT CONTROL |
| Input Voltage-Max | 13.5V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| 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 |
| Supply Current-Max (Isup) | 2.5mA |
| Supply Voltage-Nom (Vsup) | 12V |
| Surface Mount | YES |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 105kHz |
| 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 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the UCC3977PWG4 datasheet?
UCC3977PWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UCC3977PWG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What type of control does the UCC3977PWG4 use for CCFL backlight driving?
The UCC3977PWG4 uses voltage-mode resonant control, a technique that drives a resonant LC tank circuit to efficiently excite cold-cathode fluorescent lamps (CCFLs) with lower switching losses and reduced electromagnetic interference compared to hard-switching inverter topologies.
What is the input voltage range of the UCC3977PWG4?
The UCC3977PWG4 accepts an input voltage from 3V minimum to 13.5V maximum, with 12V as the nominal operating voltage, making it compatible with standard 12V power supply rails found in laptop computers, monitors, and industrial display systems.
What package does the UCC3977PWG4 come in?
The UCC3977PWG4 is housed in an 8-pin TSSOP (Thin Shrink Small Outline Package, JESD-30 code R-PDSO-G8) package, offering a small SMD footprint suitable for compact LCD inverter boards and space-constrained backlight driver modules.
What are the supply voltage options indicated in the UCC3977PWG4 description?
The UCC3977PWG4 datasheet lists compatibility with 3.3V, 5V, 9V, and 12V supply configurations, reflecting its wide input range from 3V to 13.5V, which allows it to be powered from multiple standard logic and power supply voltages available in display system designs.
What are typical applications for the UCC3977PWG4?
Typical applications include CCFL backlight inverters for LCD panels in notebook PCs, desktop monitors, industrial HMI displays, medical imaging screens, and point-of-sale terminals, where efficient resonant lamp driving and compact layout are required.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 150+ | $7.2353 | $1085.30 |
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