The TPS62745 is a high efficiency ultra low power synchronous step down converter optimized for low power wireless applications. It provides a regulated output voltage consuming only 400-nA quiescent current. The device operates from two rechargeable Li-Ion batteries, Li-primary battery chemistries such as Li-SOCl2, Li-SO2, Li-MnO2 or four to six cell alkaline batteries. The input voltage range up to 10 V allows also operation from a USB port and thin-film solar modules. The output voltage is set with four VSEL pins between 1.8 V and 3.3 V for TPS62745 or 1.3 V and 2.8 V for TPS627451. TPS62745 features low output ripple voltage and low noise with a small output capacitor. An internal input voltage switch controlled by pin EN_VIN_SW connects the supply voltage to pin VIN_SW. The switch is intended to be used for an external voltage divider, scaling down the input voltage for an external ADC. The switch is automatically opened when the supply voltage is below the undervoltage lockout threshold. The TPS62745 is available in a small 12 pin 3 mm × 2 mm WSON package.
| Typ | Titel | Datum | ||
|---|---|---|---|---|
| * | Data sheet | TPS62745 Dual-cell Ultra Low IQ Step Down Converter for Low Power Wireless Applications datasheet (Rev. A) | PDF | HTML | 10 Jun 2015 |
| White paper | Extending Battery Life in Smart E-Locks (Rev. A) | 04 Jun 2020 | ||
| White paper | Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies | 14 Okt 2019 | ||
| Analog Design Journal | Methods of output-voltage adjustment for DC/DC converters | 14 Jun 2019 | ||
| Analog Design Journal | Understanding 100% mode in low-power DC/DC converters | 22 Jun 2018 | ||
| Analog Design Journal | Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold | 24 Okt 2017 | ||
| Analog Design Journal | Testing tips for applying external power to supply outputs without an input voltage | 24 Okt 2016 | ||
| Analog Design Journal | Understanding frequency variation in the DCS-Control(TM) topology | 30 Okt 2015 |
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The TPS62745EVM-622 is designed to help the user easily evaluate and test the operation and functionality of the TPS62745. The EVM converts a 3.3-V to 10-V input voltage to a regulated output voltage that is set between 1.8 V and 3.3 V at up to 300 mA. The TPS62745 also includes an integrated input (...)
| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| WSON (DSS) | 12 | Ultra Librarian |
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