UCC2305N Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The UCC2305N is a current-mode PWM fluorescent and HID lamp controller operating from a 5 V to 18 V supply, designed to drive resonant inverter ballasts with precise lamp current regulation. It integrates gate drive outputs, current-sense comparator, and protective shutdown in a 28-pin DIP package. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- UCC2305N Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $8.1400(MOQ 24)
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UCC2305N?
- Current-mode PWM control with programmable oscillator frequency enables tight lamp current regulation across 5 V to 18 V input rails
- Integrated resonant gate drive outputs reduce external FET driver components in half-bridge ballast topologies
- Protective fault shutdown with auto-restart safeguards lamps and power stage during open-filament or arc-strike failures
What is UCC2305N used for?
The UCC2305N is used in electronic ballast designs for fluorescent T8 and T12 tubes in commercial lighting fixtures requiring high-frequency 40 kHz to 100 kHz lamp excitation with stable arc current. It suits retrofit ballast boards for HID lamp starters where the resonant inverter stage must ignite and regulate a high-pressure sodium or metal-halide lamp from a 12 V or 24 V DC bus. The device is also found in laboratory and industrial UV lamp power supplies where controlled lamp warm-up and steady-state current regulation directly affect lamp life and spectral output consistency.
What are the specifications of UCC2305N?
| YTEOL | 0 |
| Analog IC - Other Type | FLUORESCENT LIGHT CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 18V |
| Input Voltage-Min | 5V |
| Input Voltage-Nom | 6.6V |
| JESD-30 Code | R-PDIP-T28 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP28,.6 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 1mA |
| Supply Voltage-Nom (Vsup) | 6.6V |
| Surface Mount | NO |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 120kHz |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the UCC2305N datasheet?
UCC2305N Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UCC2305N?
Compatible alternatives and drop-in replacements for UCC2305N:
Controller, Current-mode, 1A, 120kHz Switching Freq-Max, PDIP28
Frequently Asked Questions
What input voltage range does UCC2305N support for ballast controller designs?
The UCC2305N operates from 5 V to 18 V input, with a nominal design point at 6.6 V. This range makes it compatible with 12 V automotive auxiliary supplies and low-voltage DC bus architectures used in bus-powered commercial lighting and portable UV lamp systems.
How does current-mode PWM control in UCC2305N improve lamp current stability over voltage-mode designs?
Current-mode control in UCC2305N senses switch current each cycle and terminates the gate pulse when current reaches a programmed threshold, limiting peak lamp current to a defined 1 A level regardless of input voltage variation. This cycle-by-cycle limiting prevents current runaway during lamp ignition and maintains stable arc current after strike, extending lamp life compared to open-loop voltage-mode controllers.
What switching frequency range does UCC2305N support for resonant ballast design?
The UCC2305N oscillator frequency is set by external resistor-capacitor components and can be configured from approximately 20 kHz to over 100 kHz. Operating at 40 kHz to 80 kHz is typical for fluorescent ballasts, which eliminates 50/60 Hz flicker visible to human observers and reduces audible noise from magnetic components in the resonant tank circuit.
Which protection features does UCC2305N provide to safeguard lamps and the power stage?
The UCC2305N includes cycle-by-cycle current limiting, over-voltage protection on the gate drive outputs, and an auto-restart fault latch that shuts down the gate signals when a lamp open-circuit or end-of-life condition is detected. The auto-restart holds the output off for a programmable period of several hundred milliseconds before attempting re-ignition, preventing thermal stress from repeated arc-strike pulses.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 24+ | $12.7300 | $305.52 |
| 500+ | $9.1600 | $4580.00 |
| 1000+ | $8.6500 | $8650.00 |
| 10000+ | $8.1400 | $81400.00 |
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