Datasheet Texas Instruments UC3854BQ — Datenblatt
| Hersteller | Texas Instruments |
| Serie | UC3854B |
| Artikelnummer | UC3854BQ |

Datenblätter
Advanced High Power Factor Preregulator datasheet
PDF, 732 Kb, Revision: E, Datei veröffentlicht: Aug 25, 2006
Auszug aus dem Dokument
Status
| Lifecycle Status | Obsolete (Manufacturer has discontinued the production of the device) |
| Manufacture's Sample Availability | No |
Verpackung
| Pin | 20 |
| Package Type | UTR |
Parameter
| Approx. Price (US$) | 1.35 | 1ku |
| Control Method | CCM |
| Device Type | Single-phase PFC |
| Operating Supply Current(mA) | 12 |
| Operating Supply(Max)(V) | 20 |
| Operating Temperature Range(C) | 0 to 70 |
| Package Group | PDIP SOIC |
| Package Size: mm2:W x L (PKG) | See datasheet (PDIP) |
| Peak Output Sink Current Gate Drive(A) | 1 |
| Peak Output Source Current Gate Drive(A) | -1 |
| Practical Operating Frequency(Max)(MHz) | 0.2 |
| Rating | Catalog |
| Special Features | > 750W Applications Average Current Mode Enable |
| Startup Current(mA) | 0.25 |
| UVLO Thresholds On/Off(V) | 10.5/10 |
Öko-Plan
| RoHS | Not Compliant |
| Pb Free | No |
Anwendungshinweise
- DN-44 UC3854A and UC3854B Advanced Power Factor Correction Control ICs (Rev. A)PDF, 158 Kb, Revision: A, Datei veröffentlicht: Nov 15, 2005
- AC Requirements for Power Factor Correction CircuitsPDF, 29 Kb, Datei veröffentlicht: 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, Datei veröffentlicht: Nov 6, 2001
- Accurate PWM Duty Cycle ClampPDF, 58 Kb, Datei veröffentlicht: 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.
Modellreihe
Serie: UC3854B (7)
Herstellerklassifikation
- Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > Power Factor Correction