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TL3843 电流模式 PWM 控制器

TL3843 描述

The TL284x and TL384x series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Some of the internally implemented circuits are an undervoltage lockout (UVLO), featuring a start-up current of less than 1 mA, and a precision reference trimmed for accuracy at the error amplifier input. Other internal circuits include logic to ensure latched operation, a pulse-width modulation (PWM) comparator (that also provides current-limit control), and a totem-pole output stage designed to source or sink high-peak current. The output stage, suitable for driving N-channel MOSFETs, is low when it is in the off state.

TL3842 TL3843 TL3844 TL3845
Topology Boost, Flyback, Forward Boost, Flyback, Forward Boost, Flyback, Forward Boost, Flyback, Forward
Control Method Current Mode Current Mode Current Mode Current Mode
Duty Cycle(Max)(%) 100 100 50 50
Frequency(Max)(kHz) 500 500 500 500
UVLO Thresholds On/Off(V) 16/10 8.4/7.6 16/10 8.4/7.6
Pin/Package 14SOIC, 8SOIC, 8PDIP 14SOIC, 8PDIP, 8SOIC 14SOIC, 8PDIP, 8SOIC 14SOIC, 8PDIP, 8SOIC
Regulated Outputs(#) 1 1 1 1
Operating Temperature Range(°C) 0 to 70 0 to 70 0 to 70 0 to 70
Rating Catalog Catalog Catalog Catalog
TL3843 特性
TL3843 芯片订购指南
器件 状态 温度 (oC) 价格(美元) 封装 | 引脚 封装数量 | 封装载体 丝印标记
TL3843D ACTIVE -40 to 85 0.44 | 1ku SOIC (D) | 14 50 | TUBE TL3843D
TL3843D-8 ACTIVE -40 to 85 0.49 | 1ku SOIC (D) | 8 75 | TUBE TL3843D
TL3843DE4 ACTIVE -40 to 85 0.44 | 1ku SOIC (D) | 14 50 | TUBE TL3843D
TL3843DE4-8 ACTIVE -40 to 85 0.49 | 1ku SOIC (D) | 8 75 | TUBE TL3843D
TL3843DG4 ACTIVE -40 to 85 0.44 | 1ku SOIC (D) | 14 50 | TUBE TL3843D
TL3843DG4-8 ACTIVE -40 to 85 0.49 | 1ku SOIC (D) | 8 75 | TUBE TL3843D
TL3843DR ACTIVE -40 to 85 0.40 | 1ku SOIC (D) | 14 2500 | LARGE T&R TL3843D
TL3843DR-8 ACTIVE -40 to 85 0.40 | 1ku SOIC (D) | 8 2500 | LARGE T&R TL3843D
TL3843DRE4 ACTIVE -40 to 85 0.40 | 1ku SOIC (D) | 14 2500 | LARGE T&R TL3843D
TL3843DRE4-8 ACTIVE -40 to 85 0.40 | 1ku SOIC (D) | 8 2500 | LARGE T&R TL3843D
TL3843DRG4 ACTIVE -40 to 85 0.40 | 1ku SOIC (D) | 14 2500 | LARGE T&R TL3843D
TL3843DRG4-8 ACTIVE -40 to 85 0.40 | 1ku SOIC (D) | 8 2500 | LARGE T&R TL3843D
TL3843P ACTIVE -40 to 85 0.48 | 1ku PDIP (P) | 8 50 | TUBE TL3843P
TL3843PE4 ACTIVE -40 to 85 0.48 | 1ku PDIP (P) | 8 50 | TUBE TL3843P
TL3843 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
TL3843D Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR   TL3843D
TL3843D-8 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR   TL3843D-8
TL3843DE4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR   TL3843DE4
TL3843DE4-8 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR   TL3843DE4-8
TL3843DG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR TL3843DG4 TL3843DG4
TL3843DG4-8 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR   TL3843DG4-8
TL3843DR Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR   TL3843DR
TL3843DR-8 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR   TL3843DR-8
TL3843DRE4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR   TL3843DRE4
TL3843DRE4-8 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR   TL3843DRE4-8
TL3843DRG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR TL3843DRG4 TL3843DRG4
TL3843DRG4-8 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR   TL3843DRG4-8
TL3843P Pb-Free (RoHS) CU NIPDAU N/A for Pkg Type   TL3843P
TL3843PE4 Pb-Free (RoHS) CU NIPDAU N/A for Pkg Type   TL3843PE4
TL3843 应用技术支持与电子电路设计开发资源下载
  1. TL3843 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器AC/DC 和 DC/DC 电源产品选型与价格参考 . xls
  3. Dual MOSFET Driver (PDF 498 KB)
  4. 标准线性产品交叉参考 (Rev. D) (PDF 1058 KB)
  5. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
  6. 所选封装材料的热学和电学性质 (PDF 645 KB)
  7. 高速数据转换 (PDF 1967 KB)
  8. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
  9. Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
  10. Principles of Data Acquisition and Conversion (PDF 50 KB)
  11. Interleaving Analog-to-Digital Converters (PDF 64 KB)
  12. What Designers Should Know About Data Converter Drift (PDF 95 KB)
  13. Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
  14. Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)
TL3843 工具与软件
名称 型号 公司 工具/软件类型
音频的快速搜索选择工具 AUDIO_SELECTION_TOOL Texas Instruments 免费评估工具
TL3843 评估模块 TL3843EVM Texas Instruments 开发电路板/EVM
用于音频转换器的软件驱动程序 CODECDRIVERS-SW Texas Instruments 应用软件