As a member of the SWIFTTM family of DC/DC regulators, the TPS5450 is a high-output-current PWM converter that integrates a low resistance high side N-channel MOSFET. Included on the substrate with the listed features are a high performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 uA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown.
| TPS54060 | TPS54160 | TPS54260 | TPS5430 | TPS54350 | TPS5450 | TPS54550 | |
| Iout(Max)(A) | 0.5 | 1.5 | 2.5 | 3 | 3 | 5 | 6 |
| Vin(Min)(V) | 3.5 | 3.5 | 3.5 | 5.5 | 4.5 | 5.5 | 4.5 |
| Vin(Max)(V) | 60 | 60 | 60 | 36 | 20 | 36 | 20 |
| Vout(Min)(V) | 0.8 | 0.8 | 0.8 | 1.23 | 0.9 | 1.22 | 0.9 |
| Vout(Max)(V) | 58 | 58 | 58 | 31 | 12 | 31 | 12 |
| Iq(Typ)(mA) | 0.116 | 0.116 | 0.138 | 3 | 5 | 3 | 9 |
| Switching Frequency(Max)(kHz) | 2500 | 2500 | 2500 | 700 | 500 | 700 | |
| Switching Frequency(Typ)(kHz) | 500 | ||||||
| Switch Current Limit(Typ)(A) | 0.6 | 1.8 | 3.5 | 4 | 3.3 | 6 | 7.5 |
| Topology | Buck, Inverting Buck/Boost | Buck, Inverting Buck/Boost | Buck ,Inverting Buck/Boost | Buck, Inverting Buck/Boost | Buck, Inverting Buck/Boost | Buck | Buck |
| Operating Temperature Range(°C) | -40 to 150 | -40 to 150 | -40 to 150 | -40 to 125 | -40 to 150,-40 to 150) | -40 to 125 | -40 to 150 |
| Pin/Package | 10MSOP-PowerPAD | 10MSOP-PowerPAD | 10MSOP-PowerPAD | 8SO PowerPAD | 16HTSSOP | 8SO PowerPAD | 16HTSSOP |
| Rating | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
| Duty Cycle(Max)(%) | 98 | 98 | 98 | 87 | 80 | 89 | 80 |
| Regulated Outputs(#) | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Thermal Shutdown | Yes | Yes | Yes | Yes | yes | yes |
| 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 |
| TPS5450DDA | ACTIVE | -40 to 125 | 2.50 | 1ku | SO PowerPAD (DDA) | 8 | 75 | TUBE | 5450 |
| TPS5450DDAG4 | ACTIVE | -40 to 125 | 2.50 | 1ku | SO PowerPAD (DDA) | 8 | 75 | TUBE | 5450 |
| TPS5450DDAR | ACTIVE | -40 to 125 | 2.25 | 1ku | SO PowerPAD (DDA) | 8 | 2500 | LARGE T&R | 5450 |
| TPS5450DDARG4 | ACTIVE | -40 to 125 | 2.25 | 1ku | SO PowerPAD (DDA) | 8 | 2500 | LARGE T&R | 5450 |
| 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 |
| TPS5450DDA | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | TPS5450DDA | |
| TPS5450DDAG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | TPS5450DDAG4 | TPS5450DDAG4 |
| TPS5450DDAR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | TPS5450DDAR | |
| TPS5450DDARG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | TPS5450DDARG4 | TPS5450DDARG4 |
| 名称 | 型号 | 公司 | 工具/软件类型 |
| 5A SWIFT 评估模块 | TPS5450EVM-254 | Texas Instruments | 开发电路板/EVM |
| SwitcherPro(TM) 开关电源设计工具 | SWITCHERPRO | Texas Instruments | 应用软件 |
| 说明 | 型号 | 公司 |
| Synchronous Buck Controller Doubles as a 2-A Buck Boost Inverter | PMP2933 | Texas Instruments |