Datasheet Texas Instruments UC1854BL
| Manufacturer | Texas Instruments |
| Series | UC1854B |
| Part Number | UC1854BL |
Datasheets
Advanced High Power Factor Preregulator datasheet
PDF, 732 Kb, Revision: E, File published: Aug 25, 2006
Extract from the document
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Status
| Lifecycle Status | Obsolete (Manufacturer has discontinued the production of the device) |
| Manufacture's Sample Availability | No |
Packaging
| Pin | 20 |
| Package Type | L |
Replacements
| Replacement | UC1854BJ |
| Replacement Code | P |
Parametrics
| Control Method | CCM |
| Duty Cycle(Max)(%) | 95 |
| Operating Temperature Range(C) | -55 to 125 |
| Package Group | CDIP |
| Package Size: mm2:W x L (PKG) | See datasheet (CDIP) |
| Rating | Military |
| Special Features | > 750W Applications Average Current Mode Enable |
| UVLO Thresholds On/Off(V) | 10.5/10 |
Eco Plan
| RoHS | Not Compliant |
| Pb Free | No |
Application Notes
- DN-44 UC3854A and UC3854B Advanced Power Factor Correction Control ICs (Rev. A)PDF, 158 Kb, Revision: A, File published: Nov 15, 2005
- 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: UC1854B (6)
Manufacturer's Classification
- Semiconductors > Space & High Reliability > Power Management Products > Offline and Isolated DC/DC Controller and Converter
