The UCC35701/UCC35702 family of pulse width modulators is intended for isolated switching power supplies using primary side control. They can be used for both off-line applications and DC/DC converter designs such as in a distributed power system architecture or as a telecom power source.
The devices feature low startup current, allowing for efficient off-line starting, yet have sufficient output drive to switch power MOSFETs in excess of 500kHz.
Voltage feed forward compensation is operational over a 5:1 input range and provides fast and accurate response to input voltage changes over a 4:1 range. An accurate volt-second clamp and maximum duty cycle limit are also featured.
Fault protection is provided by pulse by pulse current limiting as well as the ability to latch off after a programmable number of repetitive faults has occurred.
| UCC25701 | UCC35701 | |
| Topology | Boost, Flyback, Forward | Boost, Buck, Flyback, Forward |
| Control Method | Voltage Mode | Voltage Mode |
| Duty Cycle(Max)(%) | 99 | 99 |
| Frequency(Max)(kHz) | 700 | 700 |
| UVLO Thresholds On/Off(V) | 13/9 | 13/9 |
| Pin/Package | 14PDIP, 14SOIC, 14TSSOP | 14PDIP, 14SOIC, 14TSSOP |
| Regulated Outputs(#) | 1 | 1 |
| Operating Temperature Range(°C) | -40 to 85 | 0 to 70 |
| Rating | Catalog | Catalog |
| 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 |
| UCC35701D | ACTIVE | -40 to 85 | 3.40 | 1ku | SOIC (D) | 14 | 50 | TUBE | UCC35701D |
| UCC35701DG4 | ACTIVE | -40 to 85 | 3.40 | 1ku | SOIC (D) | 14 | 50 | TUBE | UCC35701D |
| UCC35701DTR | ACTIVE | -40 to 85 | 3.20 | 1ku | SOIC (D) | 14 | 2500 | LARGE T&R | UCC35701D |
| UCC35701DTRG4 | ACTIVE | -40 to 85 | 3.20 | 1ku | SOIC (D) | 14 | 2500 | LARGE T&R | UCC35701D |
| UCC35701N | ACTIVE | -40 to 85 | 4.30 | 1ku | PDIP (N) | 14 | 25 | TUBE | UCC35701N |
| UCC35701NG4 | ACTIVE | -40 to 85 | 4.30 | 1ku | PDIP (N) | 14 | 25 | TUBE | UCC35701N |
| UCC35701PW | ACTIVE | -40 to 85 | 4.05 | 1ku | TSSOP (PW) | 14 | 90 | TUBE | 35701 |
| UCC35701PWG4 | ACTIVE | -40 to 85 | 4.05 | 1ku | TSSOP (PW) | 14 | 90 | TUBE | 35701 |
| UCC35701Q | OBSOLETE | 0 to 70 | UTR | 20 | |||
| UCC35701QTR | OBSOLETE | 0 to 70 | UTR | 20 |
| 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 |
| UCC35701D | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | UCC35701D | |
| UCC35701DG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | UCC35701DG4 | UCC35701DG4 |
| UCC35701DTR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | UCC35701DTR | |
| UCC35701DTRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | UCC35701DTRG4 | UCC35701DTRG4 |
| UCC35701N | Green (RoHS & no Sb/Br) | CU NIPDAU | N/A for Pkg Type | UCC35701N | |
| UCC35701NG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | N/A for Pkg Type | UCC35701NG4 | UCC35701NG4 |
| UCC35701PW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | UCC35701PW | |
| UCC35701PWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | UCC35701PWG4 | UCC35701PWG4 |
| 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 |
| UCC35701 评估模块 | UCC35701EVM | 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 |