Datasheet Texas Instruments UC3855BDWTR
| Manufacturer | Texas Instruments |
| Series | UC3855B |
| Part Number | UC3855BDWTR |
High Performance Power Factor Preregulator 20-SOIC 0 to 70
Datasheets
High Performance Power Factor Preregulator datasheet
PDF, 1.3 Mb, Revision: B, File published: Oct 27, 2005
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Status
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | No |
Packaging
| Pin | 20 |
| Package Type | DW |
| Industry STD Term | SOIC |
| JEDEC Code | R-PDSO-G |
| Package QTY | 2000 |
| Carrier | LARGE T&R |
| Device Marking | UC3855BDW |
| Width (mm) | 7.5 |
| Length (mm) | 12.8 |
| Thickness (mm) | 2.35 |
| Pitch (mm) | 1.27 |
| Max Height (mm) | 2.65 |
| Mechanical Data | Download |
Parametrics
| Control Method | CCM |
| Device Type | Single-phase PFC |
| Operating Supply Current | 17 mA |
| Operating Supply(Max) | 20 V |
| Operating Temperature Range | 0 to 70 C |
| Package Group | SOIC |
| Package Size: mm2:W x L | 20SOIC: 132 mm2: 10.3 x 12.8(SOIC) PKG |
| Peak Output Sink Current Gate Drive | 1.5 A |
| Peak Output Source Current Gate Drive | -1.5 A |
| Practical Operating Frequency(Max) | 0.5 MHz |
| Rating | Catalog |
| Special Features | > 750W Applications,Average Current Mode,Enable,OVP |
| Startup Current | 0.15 mA |
| UVLO Thresholds On/Off | 10.5/10 V |
Eco Plan
| RoHS | Compliant |
Application Notes
- U-153 UC3855A/B High Performance Power Factor Preregulator (Rev. A)PDF, 875 Kb, Revision: A, File published: Sep 23, 2003
- AC Requirements for Power Factor Correction CircuitsPDF, 29 Kb, File published: Mar 28, 2002
This technical brief identifies the recommended range of IAC for each of the devices within the UCC3854 family of PFC controllers. - DN-66 UC3854A/B and UC3855A/B Provide Power Limiting with Sinusoidal Input (Rev. A)PDF, 80 Kb, Revision: A, File published: Nov 6, 2001
- Accurate PWM Duty Cycle ClampPDF, 58 Kb, File published: Jan 25, 2002
Power supply applications using current sense transformers require a duty cycle clamp on the pulse width modulator (PWM) to ensure transformer reset. Not all PWMs come with a duty cycle clamp presenting a problem for the power supply designer. This application note shows how to implement a duty cycle clamp by using a simple delay circuit.
Model Line
Series: UC3855B (6)
- UC3855BDW UC3855BDWG4 UC3855BDWTR UC3855BDWTRG4 UC3855BN UC3855BNG4
Manufacturer's Classification
- Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > Power Factor Correction
