PUCC256404DDB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The PUCC256404DDB is an LLC resonant controller IC from Texas Instruments featuring ultra-low power standby, high-voltage startup, and a 13 V to 26 V input range. In a 14-pin SOIC package, it is optimized for high-efficiency server power supplies and telecom power conversion designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- PUCC256404DDB Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PUCC256404DDB?
- LLC resonant control topology for high-efficiency power conversion
- Ultra-low power and ultra-quiet standby operation mode
- High-voltage startup circuit for direct offline bootstrapping
- Input voltage range of 13 V to 26 V with 15 V nominal
- Output gate drive current up to 1.2 A for external MOSFET control
- 14-pin SOIC package for compact power supply board integration
What is PUCC256404DDB used for?
The PUCC256404DDB is targeted at high-efficiency server power supplies, ATX desktop power units, and telecom rectifiers where LLC resonant topology delivers high power density with low switching losses at full and light loads. Its ultra-quiet standby mode is particularly valuable in always-on infrastructure equipment where audible noise compliance and idle-power regulations are mandatory.
What are the specifications of PUCC256404DDB?
| Date Of Intro | 2019-06-26 |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Technique | RESONANT CONTROL |
| Input Voltage-Max | 26V |
| Input Voltage-Min | 13V |
| Input Voltage-Nom | 15V |
| JESD-30 Code | R-PDSO-G14 |
| Number of Functions | 1 |
| Output Current-Max | 1.2A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the PUCC256404DDB datasheet?
PUCC256404DDB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for PUCC256404DDB?
Compatible alternatives and drop-in replacements for PUCC256404DDB:
Switching Controller, Current-mode, 1.2A, 99.7kHz Switching Freq-Max, BICMOS, PDSO14
Frequently Asked Questions
What input voltage range does PUCC256404DDB support and how does that affect power supply design flexibility?
The PUCC256404DDB operates with an input voltage range of 13 V to 26 V, with a nominal input of 15 V. This range is well-matched to bias supplies derived from an LLC resonant converter's auxiliary winding, enabling self-powered controller configurations common in server and telecom power supply designs.
How does the LLC resonant control technique in PUCC256404DDB improve efficiency compared to hard-switching topologies?
LLC resonant control in the PUCC256404DDB achieves zero-voltage switching (ZVS) on the primary MOSFETs and zero-current switching (ZCS) on the secondary rectifiers. This eliminates switching losses at high frequency, allowing the converter to operate at frequencies above 100 kHz with efficiency improvements of several percentage points versus hard-switching designs.
What maximum gate drive current can PUCC256404DDB deliver for driving external power MOSFETs?
The PUCC256404DDB provides up to 1.2 A of peak gate drive current on its output stage. This is sufficient to drive medium-capacitance power MOSFETs used in LLC half-bridge stages directly without an external gate driver buffer, simplifying the power stage design and reducing component count.
How does the ultra-low power standby mode of PUCC256404DDB help meet energy efficiency standards?
The PUCC256404DDB includes an ultra-low power standby mode that reduces no-load and light-load losses to meet standards such as 80 PLUS Titanium and ErP Lot 6, which require standby power below 0.5 W. The ultra-quiet operation also suppresses audio-frequency noise that can cause coil whine in power supply magnetics during burst-mode operation.
Is PUCC256404DDB available in a package suitable for high-density power supply PCB layouts?
Yes, the PUCC256404DDB is supplied in a 14-pin SOIC (R-PDSO-G14) package with a standard 1.27 mm pitch. This small-outline format occupies minimal board space in high-density server power supply PCBs while remaining compatible with standard SMT assembly and reflow soldering processes.
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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.
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