封裝資訊
| 封裝 | 引腳 HSOIC (DDA) | 8 |
| 作業溫度範圍 (°C) -40 to 85 |
| 包裝數量 | 運送包裝 75 | TUBE |
TPS54531 的特色
- 3.5 to 28-V input voltage range
- Adjustable output voltage down to 0.8 V
- Integrated 80-mΩ high-side MOSFET supports up to 5-A continuous output current
- High efficiency at light loads with a pulse skipping Eco-mode
- Fixed 570-kHz switching frequency
- Typical 1-µA shutdown quiescent current
- Adjustable slow start limits inrush currents
- Programmable UVLO threshold
- Overvoltage transient protection
- Cycle-by-cycle current-limit, frequency fold back, and thermal shutdown protection
- Available in easy-to-use thermally enhanced 8-pin SO PowerPAD™ integrated circuit package
- Use TPS56637 for higher efficiency in a smaller package
- Create a custom design using the TPS54531 with the WEBENCH Power Designer
TPS54531 的說明
The TPS54531 device is a 28-V, 5-A non-synchronous buck converter that integrates a low R DS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1-µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current-limit scheme, frequency fold back, and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54531 device is available in 8-pin SO PowerPAD integrated circuit package that has been internally optimized to improve thermal performance.