The TPS5433xA family of devices are synchronous converters with an input-voltage range of 4.5 to 28 V. These devices include an integrated low-side switching FET that eliminates the need for an external diode which reduces component count.
Efficiency is maximized through the integrated 128-mΩ and 84-mΩ MOSFETs, low IQ and pulse skipping at light loads. Using the enable pin, the shutdown supply current is reduced to 2 μA. This step-down (buck) converter provides accurate regulation for a variety of loads with a well-regulated voltage reference that is 1.5% over temperature.
Cycle-by-cycle current limiting on the high-side MOSFET protects the TPS5433xA family of devices in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. A low-side sinking current-limit turns off the low-side MOSFET to prevent excessive reverse current. Hiccup protection is triggered if the overcurrent condition continues for longer than the preset time. Thermal shutdown disables the device when the die temperature exceeds the threshold and enables the device again after the built-in thermal hiccup time.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS5433xA 4.5-V to 28-V Input, 3-A Output, Synchronous Step-Down DC-DC Converter datasheet (Rev. D) | PDF | HTML | 10 Feb 2016 |
| Application brief | Simplify Voltage and Current Measurement in Battery Test Equipment (Rev. A) | PDF | HTML | 10 Mar 2022 | |
| User guide | TPS54335A Step-Down Converter Evaluation Module User's Guide (Rev. A) | PDF | HTML | 07 Oct 2021 | |
| Application note | How to Estimate Overshoot and Undershoot of Load Transients of a DC/DC Regulator | 20 Dec 2017 | ||
| Application note | Using TPS54335A to Create an Inverting Power Supply (Rev. A) | 19 Jul 2017 | ||
| Application note | Using TPS54335A to Create an Inverting Power Supply | 13 Jul 2017 |
For additional terms or required resources, click any title below to view the detail page where available.
The TPS54335AEVM-010 is a fully assembled and tested circuit for evaluating the TPS54335A synchronous step-down SWIFT™ converter. The EVM converts a 8-V to 28-V input voltage to a regulated 5-V output voltage that delivers up to 2 A. The TPS54335A enables small designs by integrating the (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| VSON (DRC) | 10 | Ultra Librarian |
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