The TPS6014x step-up, regulated charge pumps generate a 5-V ±4% output voltage from a 1.8-V to 3.6-V input voltage range. The devices are typically powered by two alkaline, NiCd, or NiMH battery cells and provide an output current of minimum 100 mA from a 2-V input. Only four external capacitors are needed to build a complete voltage tripler charge pump.
The devices regulate the output by using the pulse-skip topology. The controller is optimized for lowest output voltage ripple over the complete output current range. The output peak current and therefore the output voltage ripple are drastically reduced compared to a conventional pulse-skip topology by regulating the charge pump output resistance. At light loads the maximum output resistance is limited to assure a low quiescent current.
The TPS60140 includes a low-battery comparator that issues a warning if the battery voltage drops below a user-adjustable threshold voltage. The TPS60141 features a power-good output that goes active when the output voltage reaches 90% of its nominal value.
The logic shutdown function disables the converter, reduces the supply current to a maximum of 1 µA and disconnects the output from the input. Special current-control circuitry prevents excessive current from being drawn from the battery during start-up. This DC/DC converter requires no inductors, therefore, EMI is of little concern. The TPS6014x operates over a free-air temperature range of –40°C to 85°C. It is available in the small, thermally enhanced 20-pin HTSSOP package (PWP).
| Typ | Titel | Datum | ||
|---|---|---|---|---|
| * | Data sheet | TPS6014x Low Power DC-DC Converter Regulated 5-V, 100-mA Charge Pump Voltage Tripler datasheet (Rev. A) | PDF | HTML | 24 Nov 2015 |
| Application note | Optimizing Resistor Dividers at a Comparator (Rev. B) | PDF | HTML | 30 Apr 2021 | |
| Application note | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 11 Dez 2018 | ||
| Application note | PowerPAD™ Thermally Enhanced Package (Rev. H) | 06 Jul 2018 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
| Application note | Extending the Soft Start Time Without a Soft Start Pin (Rev. B) | 15 Jun 2017 | ||
| Application note | Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs | 19 Sep 2011 | ||
| User guide | TPS6014x Charge Pump Evaluation Module User's Guide | 02 Mär 2000 |
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The TPS60140EVM-144 is an evaluation tool for the regulated voltage tripler charge pump TPS60140. The package includes a tested evalutation module (EVM), an EVM user's guide (SLVU023) that contains the schematic, bill of material, components placement, layout and the setup of the EVM. The (...)
| Gehäuse | Pins | Herunterladen |
|---|---|---|
| HTSSOP (PWP) | 20 | Optionen anzeigen |
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