The TPS60230 charge pump is optimized for white LED supplies in backlit color display applications. The device provides a constant current, set by an external resistor, for each LED. The supply voltage ranges from 2.7 V to 6.5 V and is ideally suited for all applications powered by a single LI-Ion battery cell or three to four NiCd, NiMH, or Alkaline battery cells. The TPS60230 provides up to 25 mA per LED, for a total of 125 mA, for input voltages ranging from 3.1 V to 6.5 V. High efficiency is achieved by utilizing a 1x/1.5x fractional conversion technique in combi- nation with very low dropout current sources. Additionally, the current controlled charge pump ensures low input current ripple and EMI. Only two external 1 µF and two 0.47 µF capacitors are required to build a complete small and low cost power supply solution. The TP60230 switches at 1 MHz operating frequency and is available in a small 16-pin QFN (RGT) package to keep board space to a minimum.
| Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | TPS60230: White LED Charge Pump Current Source with PWM Brightness Control datasheet (Rev. A) | 25 may 2004 | |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 sep 2020 | ||
| Application note | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 11 dic 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 | TPS60230 WLED Charge Pump | 09 nov 2005 | ||
| EVM User's guide | TPS60230EVM User's Guide | 07 jul 2004 |
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
The Texas Instruments TPS60230EVM-047 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS60230. The TPS60230 is an efficient charge-pump-based current sink that can drive up to five white LEDs with 25mA each.
The EVM is specifically designed and optimized to (...)
The Texas Instruments TPS60231EVM-047 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS60231. The TPS60231 is an efficient charge-pump-based current sink that can drive up to three white LEDs with 25mA each.
The EVM is specifically designed and optimized to (...)
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| VQFN (RGT) | 16 | Ultra Librarian |
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