UCC2972PW Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC2972PW is a current-mode PWM CCFL controller IC in an 8-pin TSSOP package, designed to drive cold-cathode fluorescent lamps with switching frequencies from 80 kHz to 160 kHz. It operates from 4.5 V to 25 V input and supports pulse-width modulation dimming control. Available in stock worldwide with competitive pricing for display backlight applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- UCC2972PW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $6.5400(MOQ 29)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UCC2972PW?
- Current-mode PWM control architecture with 80 kHz to 160 kHz switching frequency range for efficient CCFL lamp regulation
- Wide input voltage range of 4.5 V to 25 V enabling compatibility with 5 V logic supplies and 12 V power rails in LCD backlight systems
- Compact 8-pin TSSOP package minimizing board footprint in portable display and notebook computer backlight driver circuits
What is UCC2972PW used for?
The UCC2972PW is primarily used in LCD backlight inverter circuits for notebook computers, monitors, and handheld display panels that rely on cold-cathode fluorescent lamp illumination. Its current-mode PWM control enables precise brightness regulation and flicker-free dimming across the 80 kHz to 160 kHz frequency band. The wide 4.5 V to 25 V input range makes it compatible with both battery-powered portable devices and fixed 12 V industrial panel supplies.
What are the specifications of UCC2972PW?
| Pbfree Code | Yes |
| Date Of Intro | 1999-11-01 |
| YTEOL | 15 |
| Analog IC - Other Type | FLUORESCENT LIGHT CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 25V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| 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 | CURRENT FED PUSH-PULL |
| Switching Frequency-Max | 220kHz |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| 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 | 8542.39.00.90 |
Where can I find the UCC2972PW datasheet?
UCC2972PW Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UCC2972PW?
Compatible alternatives and drop-in replacements for UCC2972PW:
Frequently Asked Questions
What switching frequency range does the UCC2972PW support for CCFL lamp control?
The UCC2972PW operates with a switching frequency range of 80 kHz to 160 kHz, allowing the designer to tune the resonant inverter frequency to match specific CCFL lamp characteristics. Operating above 80 kHz keeps switching noise well above the audible range, which is critical for noise-sensitive display applications.
Which input voltage range is compatible with UCC2972PW, and what does that mean for system design?
The UCC2972PW accepts an input voltage from 4.5 V to 25 V, with a nominal operating point at 12 V. This wide range allows the controller to be powered directly from a 5 V logic rail during startup or from a regulated 12 V adapter in desktop LCD monitors, eliminating the need for a separate pre-regulator in many designs.
How does the 8-pin TSSOP package of UCC2972PW benefit space-constrained LCD backlight PCB layouts?
The 8-pin TSSOP package measures approximately 3 mm x 4.4 mm, consuming significantly less PCB area than an equivalent PDIP package. In slim notebook backlight inverter boards where space is typically under 5 cm wide, this compact footprint allows the UCC2972PW to be placed close to the resonant tank components, reducing parasitic inductance and improving switching efficiency.
When is UCC2972PW a more suitable alternative to a discrete transistor-based CCFL driver?
The UCC2972PW is preferred over discrete designs when integrated current-mode PWM control, over-voltage protection, and lamp-out detection are needed in a single 8-pin IC. Discrete solutions typically require 10 or more components to replicate the same protection features, whereas the UCC2972PW consolidates this functionality while keeping the bill-of-materials cost low for volume LCD production.
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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 |
|---|---|---|
| 29+ | $10.2300 | $296.67 |
| 500+ | $7.3600 | $3680.00 |
| 1000+ | $6.9500 | $6950.00 |
| 10000+ | $6.5400 | $65400.00 |
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