| TPS54140-Q1 | |
| Iout(Max)(A) | 1.5 |
| Vin(Min)(V) | 3.5 |
| Vin(Max)(V) | 42 |
| Vout(Min)(V) | 0.8 |
| Vout(Max)(V) | 39 |
| Iq(Typ)(mA) | 0.116 |
| Switching Frequency(Max)(kHz) | 2500 |
| Switch Current Limit(Typ)(A) | 1.8 |
| Topology | Inverting Buck/Boost |
| Operating Temperature Range(°C) | -40 to 125 |
| Pin/Package | 10MSOP-PowerPAD, 10SON |
| Rating | Automotive |
| Duty Cycle(Max)(%) | 98 |
| Regulated Outputs(#) | 1 |
| Thermal Shutdown | Yes |
The TPS54140 device is a 42-V 1.5-A step-down regulator with an integrated high-side MOSFET. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load, regulated output supply current to 116 uA. Using the enable pin, shutdown supply current is reduced to 1.3 uA.
Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open-drain power good signal indicates the output is within 93% to 107% of its nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized
| 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 |
| TPS54140QDGQRQ1 | ACTIVE | -40 to 125 | 1.85 | 1ku | MSOP-PowerPAD (DGQ) | 10 | 2500 | LARGE T&R | 5414Q |
| TPS54140QDRCRQ1 | ACTIVE | -40 to 125 | 1.85 | 1ku | SON (DRC) | 10 | 3000 | LARGE T&R | 5414Q |
| 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 |
| TPS54140QDGQRQ1 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | TPS54140QDGQRQ1 | |
| TPS54140QDRCRQ1 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | TPS54140QDRCRQ1 |