UCC3805PWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC3805PWG4 is a current-mode PWM switching controller from Texas Instruments, delivering up to 1 A gate drive at switching frequencies up to 1000 kHz with a 4 V to 12 V input voltage range in a compact 8-pin TSSOP package. It is designed for high-frequency power supply designs and is fully RoHS compliant. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- UCC3805PWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Current-mode PWM control up to 1000 kHz enabling high-frequency, compact power supply designs with fast transient response
- 1 A gate drive output current supporting efficient driving of power MOSFETs in switching power converters
- Wide 4 V to 12 V input voltage range (nominal 10 V) for flexible integration across diverse power supply topologies
- Compact 8-pin TSSOP package (R-PDSO-G8) with RoHS e4 Pb-free compliance for modern lead-free PCB designs
Applications
The UCC3805PWG4 is used in high-frequency switch-mode power supplies, including DC-DC converters, flyback, forward, and push-pull topologies for telecom, industrial, and embedded power applications. Its current-mode control architecture provides inherent cycle-by-cycle current limiting and excellent line and load regulation, making it ideal for regulated power modules and battery chargers. The device is also well suited for power factor correction stages and motor drive auxiliary power supplies requiring precise PWM control.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 12V |
| 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 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 1000kHz |
| Technology | BICMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| 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 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UCC3805PWG4:
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Frequently Asked Questions
What is the maximum switching frequency of the UCC3805PWG4?
The UCC3805PWG4 supports switching frequencies up to 1000 kHz (1 MHz), allowing designers to use smaller passive components (inductors and capacitors) in power supply circuits, resulting in more compact and lightweight power conversion solutions for industrial and telecom applications.
What is the input voltage range and gate drive current of the UCC3805PWG4?
The UCC3805PWG4 operates over an input voltage range of 4 V minimum to 12 V maximum, with a nominal operating voltage of 10 V. It can source up to 1 A of gate drive current, enabling reliable and fast switching of external power MOSFETs in high-frequency converter designs.
What control mode does the UCC3805PWG4 use and what are its benefits?
The UCC3805PWG4 uses current-mode pulse width modulation (PWM) control. This technique provides inherent cycle-by-cycle overcurrent protection, simpler compensation, and improved transient response compared to voltage-mode control, making it preferred for regulated power supply designs in industrial and communication systems.
What package does the UCC3805PWG4 use and is it RoHS compliant?
The UCC3805PWG4 is housed in an 8-pin TSSOP package (JESD-30 code R-PDSO-G8). It is fully RoHS compliant with JESD-609 code e4 (Pb-free), suitable for lead-free surface-mount assembly processes used in modern industrial and consumer power electronics manufacturing.
What power supply topologies is the UCC3805PWG4 suitable for?
The UCC3805PWG4 is compatible with flyback, forward, half-bridge, full-bridge, and push-pull power converter topologies. It is widely used in isolated and non-isolated DC-DC converters, telecom power modules, industrial power supplies, and battery charging circuits that benefit from current-mode PWM control at high switching frequencies.
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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.
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