The TPS62903-Q1 is a highly efficient, small, and flexible synchronous step-down DC/DC converter that is easy to use. A selectable switching frequency of 2.5 MHz or 1.0 MHz allows the use of small inductors and provides fast transient response. The device supports high V OUT accuracy of ± 1.5% across the entire operating temperature range and enhanced load transient performance with the DCS-Control topology. The wide 3-V to 18-V input voltage range supports a variety of nominal inputs, like 12-V supply rails, single-cell or multi-cell Li-Ion, and 5-V or 3.3-V rails.
The TPS62903-Q1 can automatically enter power save mode (if auto PFM or PWM is selected) at light loads to maintain high efficiency. Additionally, to provide high efficiency at very small loads, the device has a low typical quiescent current of 4 µA. AEE, if enabled, provides high efficiency across V IN, V OUT, and load current. The device includes a MODE/Smart-CONF input to set the internal and external divider, switching frequency, output voltage discharge, and automatic power save mode or forced PWM operation.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | TPS62903-Q1 3-V to 18-V, 3-A, Automotive Low IQ Buck Converter with +165°C TJ datasheet (Rev. A) | PDF | HTML | Mar 31, 2023 |
| Functional safety information | TPS629xx-Q1 Functional Safety, FIT Rate, FMD and Pin FMA (Rev. A) | PDF | HTML | Jul 16, 2026 | |
| White paper | Addressing Performance Challenges in Nano-IQ Systems (Rev. A) | PDF | HTML | Mar 11, 2024 | |
| Application brief | Functional Safety Compliant Power Design for Functional Safety Microcontrollers | PDF | HTML | Jan 26, 2024 | |
| Application note | Comparison of TPS629xx-Q1 vs. TPS621x0A-Q1 | PDF | HTML | Dec 13, 2022 | |
| Application note | Using the TPS6290x in an Inverting Buck – Boost Topology | PDF | HTML | Jul 12, 2022 | |
| Certificate | TPS62903-Q1EVM EU RoHS Declaration of Conformity (DoC) | May 4, 2022 | ||
| Application note | How to Best Use TPS62903 for a Given Application Requirement | PDF | HTML | Aug 13, 2021 | |
| Application brief | Multi-Function Pins for Easy Designing | PDF | HTML | Jul 7, 2021 |
For additional terms or required resources, click any title below to view the detail page where available.
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN-HR (RYT) | 9 | Ultra Librarian |
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