UCC27323DGNR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments UCC27323DGNR is a dual 4.5 A low-side MOSFET gate driver with inverting inputs in an 8-pin HVSSOP package. It features totem-pole outputs and accepts standard logic inputs for driving two independent power switches. Available from stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- UCC27323DGNR 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
Key Features
- Dual 4.5 A peak source and sink current outputs enabling fast switching of high gate-charge MOSFETs at frequencies above 1 MHz
- Inverting input logic compatible with standard PWM controllers without external signal inversion
- Thermally enhanced 8-pin HVSSOP package with exposed pad for reduced thermal resistance in high-frequency power stages
Applications
The UCC27323DGNR is ideal for synchronous buck converters, half-bridge power stages, and LLC resonant converters where fast MOSFET switching at frequencies above 200 kHz demands peak gate drive currents of 4 A or more. Its dual-channel architecture enables driving both the high-frequency switching MOSFET and the synchronous rectifier in a single IC, reducing board space in DC-DC converter designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| High Side Driver | NO |
| Input Characteristics | STANDARD |
| Interface IC Type | BUFFER OR INVERTER BASED MOSFET DRIVER |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Channels | 2 |
| Number of Functions | 2 |
| Output Characteristics | TOTEM-POLE |
| Output Current-Max | 4A |
| Output Peak Current Limit-Nom | 4A |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 0.45mA |
| Supply Voltage-Max | 15V |
| Supply Voltage-Min | 4.5V |
| Supply Voltage-Nom | 14V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Turn-off Time | 0.05 µs |
| Turn-on Time | 0.04 µs |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What peak output current can UCC27323DGNR deliver and how does that translate to MOSFET switching speed?
The UCC27323DGNR delivers 4.5 A peak source and sink current per channel. Driving a MOSFET with 20 nC gate charge, this current level charges the gate in approximately 4.4 ns, enabling switching transitions well under 10 ns and supporting converter switching frequencies above 1 MHz.
How does the inverting input of UCC27323DGNR simplify integration with common PWM controller ICs?
Many peak-current-mode controllers output active-low gate drive signals. The UCC27323DGNR inverting inputs accept these directly without external NOT gates, reducing component count and propagation delay. Each channel adds only about 15 ns of propagation delay from input to output at 12 V supply.
In which thermal condition does the 8-pin HVSSOP exposed pad of UCC27323DGNR provide a measurable benefit?
At 4.5 A peak switching with 10 nF capacitive loads at 500 kHz, the driver dissipates approximately 225 mW. The HVSSOP exposed pad reduces junction-to-board thermal resistance by 30-50% compared to standard SOIC-8, keeping junction temperature below 125°C on a standard 2-layer PCB without a heatsink.
Can UCC27323DGNR drive both switches in a synchronous buck converter independently?
Yes, the UCC27323DGNR dual-channel low-side configuration independently drives 2 MOSFETs. In a synchronous buck stage, one channel drives the high-side via a bootstrap circuit external to the IC, while the other directly drives the synchronous rectifier, supporting dead-time control down to 50 ns between channels.
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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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