Datasheet Texas Instruments UC3854BQ — 数据表
| 制造商 | Texas Instruments |
| 系列 | UC3854B |
| 零件号 | UC3854BQ |
数据表
价格
状态
| Lifecycle Status | Obsolete (Manufacturer has discontinued the production of the device) |
| Manufacture's Sample Availability | No |
打包
| Pin | 20 |
| Package Type | UTR |
参数化
| 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 |
生态计划
| RoHS | Not Compliant |
| Pb Free | No |
应用须知
- DN-44 UC3854A and UC3854B Advanced Power Factor Correction Control ICs (Rev. A)PDF, 158 Kb, 修订版: A, 档案已发布: Nov 15, 2005
- AC Requirements for Power Factor Correction CircuitsPDF, 29 Kb, 档案已发布: 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, 修订版: A, 档案已发布: Nov 6, 2001
- Accurate PWM Duty Cycle ClampPDF, 58 Kb, 档案已发布: 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.
模型线
系列: UC3854B (7)
制造商分类
- Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > Power Factor Correction