UCC28089DR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
UCC28089DR is a primary-side push-pull PWM oscillator IC with dead-time control and current-mode regulation, operating from 8.5 V to 14 V supply. It drives complementary push-pull power stages in an 8-pin SOIC package for isolated DC-DC converters. Available from Texas Instruments with worldwide distribution.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- UCC28089DR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.5142(MOQ 1)
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Push-pull oscillator with dead-time control preventing cross-conduction in complementary switch-pair power stages for improved converter efficiency
- Current-mode PWM control delivering cycle-by-cycle overcurrent limiting and improved line transient response in isolated DC-DC topologies
- 8.5 V to 14 V operating range compatible with telecom 12 V bus and battery-derived pre-regulated power rails
- Integrated complementary gate drive outputs simplifying direct connection to push-pull stage MOSFETs without external logic inversion
- 8-pin SOIC package enabling compact PCB layout for telecom, industrial, and distributed power architecture converter modules
Applications
UCC28089DR is designed to control push-pull DC-DC converter stages in telecom infrastructure equipment, industrial power modules, and distributed power architectures operating from 9 V to 14 V bus rails. Its dead-time control and current-mode PWM prevent transformer core saturation and protect power switches during startup and fault conditions. The device suits isolated brick converters, intermediate bus converters, and PoE-powered isolated supply modules where push-pull topology offers high efficiency at moderate power levels.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 14V |
| Input Voltage-Min | 8.5V |
| Input Voltage-Nom | 9V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 2mA |
| Supply Voltage-Max (Vsup) | 14V |
| Supply Voltage-Min (Vsup) | 8.5V |
| Supply Voltage-Nom (Vsup) | 9V |
| Surface Mount | YES |
| Switcher Configuration | PUSH-PULL |
| 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) | 30 |
| 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 | Mainland China, Mexico, Philippines, Taiwan |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UCC28089DR:
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Frequently Asked Questions
What supply voltage range and topology does UCC28089DR support in DC-DC converter designs?
UCC28089DR operates from 8.5 V to 14 V (nominal 9 V), covering the standard 12 V telecom and industrial bus rails. It controls push-pull converter topologies where two switches alternately energize opposite ends of a center-tapped transformer primary, achieving higher power density and lower peak switch current than single-switch flyback designs at the same output power level.
How does dead-time control in UCC28089DR prevent power transistor cross-conduction?
Dead-time control in UCC28089DR inserts a programmable non-overlap interval between the turn-off of one push-pull switch and the turn-on of the opposite switch. Without this dead time, both MOSFETs would briefly conduct simultaneously, causing shoot-through currents that can exceed 10 A in a 100 W stage, destroying switches and creating transformer saturation. The integrated dead-time generator ensures a safe minimum off-time regardless of duty cycle variation.
What advantage does current-mode control in UCC28089DR provide over voltage-mode control for push-pull stages?
Current-mode PWM in UCC28089DR directly monitors switch current each cycle and terminates the pulse when a threshold is reached, inherently balancing the volt-second product across the push-pull transformer and preventing core saturation — a critical failure mode in push-pull topologies. Voltage-mode controllers require an external slope compensation and current sense circuit to achieve the same protection, increasing BOM count and design complexity.
In a telecom 12 V intermediate bus converter, how does UCC28089DR simplify the gate drive circuit?
UCC28089DR provides complementary push-pull gate drive outputs directly, eliminating external NOT gates or discrete driver stages needed with single-output PWM ICs. The 8-pin SOIC integration reduces the gate drive subsystem to the IC plus a few bypass capacitors, saving approximately 3 to 5 components versus a discrete voltage-mode controller plus separate output inversion, and reducing PCB area in space-constrained telecom shelf power modules.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.4198 | $2.42 |
| 3+ | $2.2262 | $6.68 |
| 12+ | $1.9358 | $23.23 |
| 100+ | $1.6024 | $160.24 |
| 194+ | $1.5511 | $300.91 |
| 250+ | $1.5142 | $378.55 |
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