TPS54140A是TI公司的一款转换器（集成开关）产品，TPS54140A是具有 Eco-Mode 的 3.5 至 42V 输入、1.5A 降压转换器，本页介绍了TPS54140A的产品说明、应用、特性等，并给出了与TPS54140A相关的TI元器件型号供参考。
TPS54140A - 具有 Eco-Mode 的 3.5 至 42V 输入、1.5A 降压转换器 - 转换器（集成开关） - DC/DC开关稳压器 - TI公司（Texas Instruments，德州仪器）
- 3.5-V to 42-V Input Voltage Range
- 200-mΩ High-Side MOSFET
- High Efficiency at Light Loads with a Pulse Skipping Eco-mode™
- Tighter Enable Threshold than TPS54140 for More Accurate UVLO Voltage
- Adjustable UVLO Voltage and Hysteresis
- 116-μA Operating Quiescent Current
- 1.3-μA Shutdown Current
- 100-kHz to 2.5-MHz Switching Frequency
- Synchronizes to External Clock
- Adjustable Slow Start/Sequencing
- UV and OV Power Good Output
- 0.8-V Internal Voltage Reference
- MSOP10 and 3-mm × 3-mm VSON-10 Package With PowerPAD™
- Supported by WEBENCH® and SwitcherPro™ Software Tool
- 12-V and 24-V Industrial and Commercial Low Power Systems
- Aftermarket Auto Accessories: Video, GPS, Entertainment
SPACE
The TPS54140A 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 μA. Using the enable pin, shutdown supply current is reduced to 1.3 μA.
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 94% to 107% of its nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| TPS54140A | VSON (10) | 3.00 mm × 3.00 mm |
| MSOP (10) | 3.00 mm × 3.00 mm |
