UCC2804N Texas Instruments In Stock
UCC2804N is a BiCMOS current-mode PWM controller by Texas Instruments designed for high-frequency power supply designs. Key specs: 1 A totem-pole output, 1 MHz oscillator frequency, 8-pin DIP package with soft-start and UVLO protection. Available in stock worldwide with competitive pricing for SMPS and DC-DC converter applications.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UCC2804N?
- Current-mode PWM control for precise power regulation
- 1 A totem-pole gate driver output for MOSFET switching
- Oscillator frequency up to 1 MHz for compact magnetics
- Integrated soft-start for inrush current limiting
- Undervoltage lockout (UVLO) protection circuitry
- 8-pin DIP package for easy through-hole prototyping
What is UCC2804N used for?
The UCC2804N is used in switch-mode power supplies, isolated DC-DC converters, and flyback regulators where current-mode control with high-frequency operation is required. Its 1 A gate driver output and integrated protection features make it suitable for industrial power bricks, telecom power modules, and offline SMPS designs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for UCC2804N?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What gate drive current does UCC2804N provide, and which MOSFET sizes can it switch directly?
UCC2804N provides a 1 A peak totem-pole gate driver output, sufficient to directly drive MOSFETs with gate charges up to approximately 50 nC at switching frequencies of 100 kHz to 1 MHz without an external buffer stage. This simplifies PCB layout in compact SMPS and flyback converter designs.
Up to what oscillator frequency can UCC2804N operate, and how does this affect transformer size in SMPS designs?
UCC2804N supports oscillator frequencies up to 1 MHz. Operating at higher frequencies such as 500 kHz to 1 MHz significantly reduces transformer core size and output filter capacitor requirements, enabling smaller, lighter power supply designs for space-constrained industrial and telecom applications.
What protection features are integrated in UCC2804N, and how do they protect converter designs during startup?
UCC2804N includes undervoltage lockout (UVLO) and soft-start circuitry. UVLO prevents operation below a defined supply threshold, protecting MOSFETs from partial gate drive during startup. Soft-start ramps the duty cycle over several milliseconds, limiting inrush current to output capacitors and preventing transformer saturation at power-on.
Which package does UCC2804N come in, and how does this influence prototyping and production board choices?
UCC2804N is available in an 8-pin DIP through-hole package, which is well-suited for prototype breadboarding and low-volume production runs. Designers transitioning to higher-density production boards may consider pin-compatible SMD variants, but the DIP package remains popular for lab evaluation and small-batch industrial power supply assemblies.
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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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