Datasheet Texas Instruments UC3854DWTR-FG4
| Manufacturer | Texas Instruments |
| Series | UC3854 |
| Part Number | UC3854DWTR-FG4 |
High Power Factor Preregulator 16-SOIC 0 to 70
Datasheets
UCx854 High-Power Factor Preregulator datasheet
PDF, 949 Kb, Revision: A, File published: Dec 16, 2016
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Prices
Status
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | No |
Packaging
| Pin | 16 |
| Package Type | DW |
| Industry STD Term | SOIC |
| JEDEC Code | R-PDSO-G |
| Package QTY | 2000 |
| Carrier | LARGE T&R |
| Device Marking | UC3854DW-F |
| Width (mm) | 7.5 |
| Length (mm) | 10.3 |
| Thickness (mm) | 2.35 |
| Pitch (mm) | 1.27 |
| Max Height (mm) | 2.65 |
| Mechanical Data | Download |
Parametrics
| Approx. Price (US$) | 1.27 | 1ku |
| Control Method | CCM |
| Device Type | Single-phase PFC |
| Operating Supply Current(mA) | 10 |
| Operating Supply(Max)(V) | 30 |
| Operating Temperature Range(C) | 0 to 70 |
| Package Group | 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 | Average Current Mode Enable |
| Startup Current(mA) | 1.5 |
| UVLO Thresholds On/Off(V) | 16/10 |
Eco Plan
| RoHS | Compliant |
| Pb Free | Yes |
Application Notes
- U-134 UC3854 Controlled Power Factor Correction Circuit DesignPDF, 346 Kb, File published: Sep 5, 1999
The UC1854 provides active power factor correction for power systems that otherwise would draw non-sinusoidal current from sinusoidal power lines. This device implements all the control functions necessary to build a power supply capable of optimally using available power-line current while minimizing line-current distortion. This application note describes the concepts and design of a boost prere - 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-39E Optimizing Performance in UC3854 Power Factor Correction ApplicationsPDF, 277 Kb, File published: Sep 5, 1999
The performance of the UC3854 Power-Factor Correction IC in the 250W application example has been evaluated using a precision PFC/THD instrument. The result was a power factor of 0.999 and Total Harmonic Distortion (THD) of 3.81%, measured to the 50th line frequency harmonic at nominal line and full load. Users should get similar results at these conditions. as well as over most line and load rang - 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. - DN-41 Extend Current Transformer RangePDF, 37 Kb, File published: Sep 5, 1999
The problems with self reset of current transformers for unipolar pulse applications can be overcome with simple forced-reset techniques derived from magnetic amplifiers. Duty factors above 90% are achievable with these techniques. This design note describes a circuit configured for forced reset and a configuration that generates a negative voltage from the current transformer.
Model Line
Series: UC3854 (9)
- UC3854DW UC3854DWG4 UC3854DWTR UC3854DWTR-FG4 UC3854DWTRG4 UC3854N UC3854NG4 UC3854Q UC3854QTR
Manufacturer's Classification
- Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > Power Factor Correction
Other Names:
UC3854DWTRFG4, UC3854DWTR FG4
