UCC2813D-3 Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments UCC2813D-3 is a current-mode PWM controller operating at up to 1000 kHz from a 4 V to 11 V supply with 1 A gate drive output in an 8-pin SOIC package. Features cycle-by-cycle current limiting and programmable oscillator for compact SMPS designs. From $1.45 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- UCC2813D-3 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.1801(MOQ 1)
- 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 UCC2813D-3?
- Current-mode PWM control with cycle-by-cycle peak current limiting provides inherent overcurrent protection and simplified loop compensation in flyback and forward converter designs
- Oscillator frequency programmable up to 1000 kHz with a single RC network, enabling miniaturized magnetics and smaller output filter components for high-density SMPS
- 1 A totem-pole gate drive output with 4 V to 11 V input range directly drives power MOSFETs in low-voltage DC-DC converters without a separate gate driver IC
What is UCC2813D-3 used for?
The UCC2813D-3 is optimized for current-mode controlled flyback, forward, and boost converters in telecommunications power supplies, industrial DC-DC modules, and consumer adapter designs operating from 5 V to 12 V intermediate bus voltages. Its 1000 kHz maximum switching frequency enables the use of very small transformers and output inductors, reducing overall converter size by 40% to 60% compared to 100 kHz designs. The 8-pin SOIC package and minimal external component count make it a cost-effective controller for single-output regulated power supplies up to 30 W.
What are the specifications of UCC2813D-3?
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 11V |
| Input Voltage-Min | 4V |
| Input Voltage-Nom | 10V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Output Voltage-Max | 4.06V |
| Output Voltage-Min | 3.94V |
| Output Voltage-Nom | 4V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 30mA |
| Supply Voltage-Max (Vsup) | 11V |
| Supply Voltage-Min (Vsup) | 4.1V |
| Supply Voltage-Nom (Vsup) | 10V |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 1000kHz |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mexico |
Where can I find the UCC2813D-3 datasheet?
UCC2813D-3 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UCC2813D-3?
Compatible alternatives and drop-in replacements for UCC2813D-3:
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Current-mode, 1A, 36kHz Switching Freq-Max, BICMOS, PDSO8
Frequently Asked Questions
What switching frequency range does UCC2813D-3 support and how does higher frequency affect converter size?
The UCC2813D-3 supports programmable switching frequencies from below 100 kHz up to 1000 kHz, set by a single external resistor-capacitor (RC) network. Operating at 500 kHz to 1 MHz reduces transformer core volume by approximately 5 to 10 times compared to a 50 kHz design, enabling ultra-compact SMPS modules with output filter inductors below 10 µH and transformers under 1 cm³.
How does UCC2813D-3 provide overcurrent protection in a flyback converter without external current sense circuitry?
The UCC2813D-3 uses cycle-by-cycle peak current limiting via an internal comparator that monitors the current sense input pin on every switching cycle. When the sensed voltage across a current sense resistor (typically 0.1 Ω to 0.5 Ω) exceeds the internal threshold, the controller immediately terminates the gate drive pulse for that cycle, limiting peak switch current to a safe level without requiring a separate overcurrent protection circuit.
What input voltage range does UCC2813D-3 require and which intermediate bus architectures does it support?
The UCC2813D-3 operates from a 4 V minimum to 11 V maximum VCC supply, with a nominal operating point of 10 V. This makes it directly compatible with 5 V USB and industrial 12 V intermediate bus architectures after a startup resistor or bias winding supply. The 1 A gate drive output supports MOSFET gate capacitances up to 10 nF at 1 MHz switching frequency, sufficient for switches rated to 30 V to 100 V in compact DC-DC converter stages.
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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 |
|---|---|---|
| 1+ | $2.0250 | $2.02 |
| 3+ | $1.8630 | $5.59 |
| 525+ | $1.2575 | $660.19 |
| 1050+ | $1.2193 | $1280.27 |
| 2550+ | $1.1801 | $3009.23 |
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