The TPS57040-Q1 device is a 42-V 0.5-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, input supply current to 116 µA. Using the enable pin, shutdown supply current is reduced to 1.5 µA, when the enable pin is low.
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 92% to 109% 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.
The TPS57040-Q1 is available in a 10-pin thermally enhanced MSOP PowerPAD™ package (DGQ) and a 10-pin SON package (DRC).
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | TPS57040-Q1 0.5-A 42-V Step-Down DC-DC Converter With Eco-mode™ datasheet (Rev. D) | PDF | HTML | Dec 23, 2014 |
| Application note | Passing CISPR25 Radiated Emissions Using the TPS54160-Q1 (Rev. A) | May 23, 2019 | ||
| Application note | Interfacing TPS57xxx-Q1 and TPS65320-Q1 Family Devices With Low Impendence Exter | Dec 8, 2015 | ||
| Application note | TPS54xxx-Q1 and TPS57xxx-Q1 Devices EMC Performance Comparison Study | Nov 17, 2015 | ||
| Application note | TPS54xx0-Q1 and TPS57xx0-Q1 Pin Open and Short Test Results (Rev. B) | Nov 3, 2015 | ||
| Application note | Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications | Mar 5, 2015 |
For additional terms or required resources, click any title below to view the detail page where available.
This worksheet is designed for use with Microsoft Excel 2002 or later. It intends to assist circuit designers in their day-to-day calculations
This worksheet includes two sections:
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
| VSON (DRC) | 10 | Ultra Librarian |
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