UCC256403DDBR Texas Instruments power-management (WSON) In Stock
The UCC256403DDBR is a Texas Instruments active clamp flyback (ACF) controller in a 10-pin WSON package. It enables zero-voltage switching (ZVS) for isolated DC/DC supplies, supports -40°C to 125°C operation, and starts from $2.43/unit with global shipping available.
- Manufacturer
- Texas Instruments
- Package
- WSON
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- UCC256403DDBR Datasheet PDF
- Category
- power-management
- Price
- From $1.2223(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Applications
The UCC256403DDBR is designed for isolated DC/DC power supplies in telecom infrastructure, industrial equipment, and server power systems. It is well-suited for high-density adapter and on-board charger designs where high efficiency and low standby power are critical requirements.
Specifications
| Topology | Active Clamp Flyback (ACF) |
| Input Voltage | 9V to 32V (gate bias) |
| Switching Frequency | Adjustable, up to 1 MHz |
| Operating Temperature | -40°C to 125°C |
| Package | 10-WSON (3mm × 3mm) |
| Pin Count | 10 |
| Zero Voltage Switching | Yes (ZVS) |
| RoHS Compliance | Yes |
| Package | WSON |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL MSL1 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UCC256403DDBR:
Frequently Asked Questions
What is the UCC256403DDBR used for?
The UCC256403DDBR is a Texas Instruments active clamp flyback controller used to design high-efficiency isolated DC/DC power supplies. Its ZVS capability makes it ideal for telecom DC/DC converters, industrial SMPS, and server auxiliary power units where minimizing switching losses is critical.
What package and pin count does the UCC256403DDBR come in?
The UCC256403DDBR is housed in a 10-pin WSON package measuring 3mm × 3mm, which provides a compact footprint with an exposed thermal pad for improved heat dissipation in high-density PCB designs.
What is the operating temperature range of the UCC256403DDBR?
The UCC256403DDBR operates over a wide temperature range of -40°C to 125°C, making it suitable for industrial, automotive auxiliary, and telecom applications that demand reliable performance under harsh thermal conditions.
Is the UCC256403DDBR RoHS compliant?
Yes, the UCC256403DDBR is fully RoHS compliant and lead-free, meeting global environmental regulations for electronic components including EU RoHS and China RoHS directives.
What are common alternative parts to the UCC256403DDBR?
Compatible alternatives to the UCC256403DDBR include the UCC256401 and UCC256404 from the same TI UCC2564xx ACF controller family, which differ in frequency range and feature set. Third-party alternatives include the ON Semiconductor NCP1568 and the Infineon ICE5GR4780AG for active clamp flyback designs.
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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 |
|---|---|---|
| 1+ | $2.4300 | $2.43 |
| 25+ | $1.6500 | $41.25 |
| 250+ | $1.3941 | $348.52 |
| 1000+ | $1.3040 | $1304.03 |
| 2500+ | $1.2611 | $3152.78 |
| 7500+ | $1.2223 | $9167.18 |
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