Datasheet Texas Instruments TPS60251RTWT — Datenblatt
| Hersteller | Texas Instruments |
| Serie | TPS60251 |
| Artikelnummer | TPS60251RTWT |
Hocheffiziente Ladepumpe für 7 WLEDs mit I2C-Schnittstelle 24-WQFN -40 bis 85
Datenblätter
High Efficiency Charge Pump for 7 WLEDs with I2C Interface datasheet
PDF, 901 Kb, Revision: C, Datei veröffentlicht: Nov 6, 2007
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Preise
Status
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes |
Verpackung
| Pin | 24 | 24 | 24 |
| Package Type | RTW | RTW | RTW |
| Industry STD Term | WQFN | WQFN | WQFN |
| JEDEC Code | S-PQFP-N | S-PQFP-N | S-PQFP-N |
| Package QTY | 250 | 250 | 250 |
| Carrier | SMALL T&R | SMALL T&R | SMALL T&R |
| Device Marking | TPS | 60251 | TPS60251 |
| Width (mm) | 4 | 4 | 4 |
| Length (mm) | 4 | 4 | 4 |
| Thickness (mm) | .75 | .75 | .75 |
| Pitch (mm) | .5 | .5 | .5 |
| Max Height (mm) | .8 | .8 | .8 |
| Mechanical Data | Herunterladen | Herunterladen | Herunterladen |
Parameter
| Number of Channels | 7 |
| Duty Cycle(Max) | 0.23 % |
| LED | 4+2+1 |
| LED Current Per Channel | 25 mA |
| Operating Temperature Range | -40 to 85 C |
| Package Group | WQFN |
| Package Size: mm2:W x L | 24WQFN: 16 mm2: 4 x 4(WQFN) PKG |
| Peak Efficiency | 93 % |
| Rating | Catalog |
| Shutdown Current(Typ) | 0.1 uA |
| Special Features | Analog Dimming,Enable/Shutdown,Fault Detection,I2C Control,Integrated Switch,Load Disconnect During Shutdown,OVP,Soft Start,Synchronous Rectification |
| Switching Frequency(Max) | 875 kHz |
| Topology | Boost |
| Type | Capacitive |
| Vin(Max) | 6 V |
| Vin(Min) | 3 V |
| Vout(Max) | 6.5 V |
| Vout(Min) | 2.7 V |
Öko-Plan
| RoHS | Compliant |
Design Kits und Evaluierungsmodule
- Evaluation Modules & Boards: TPS60251EVM-192
TPS60251 Evaluation Module
Lifecycle Status: Active (Recommended for new designs)
Anwendungshinweise
- Ballast Resistor Calculation – Current Matching in Parallel LEDsPDF, 351 Kb, Datei veröffentlicht: Apr 16, 2009
Engineers often need to connect LEDs in parallel. Ideally, the LEDs share current equally. In reality, even LEDs from the same production lot have poorly matched I-V characteristics. This mismatch causes the LEDs to not share the current equally. The engineer can add a ballast resistor in series with each LED to minimize current differences. This application report explains how to size the ball - Extending the Soft Start Time Without a Soft Start Pin (Rev. B)PDF, 387 Kb, Revision: B, Datei veröffentlicht: Jun 15, 2017
- Performing Accurate PFM Mode Efficiency Measurements (Rev. A)PDF, 418 Kb, Revision: A, Datei veröffentlicht: Dec 11, 2018
When performing measurements on DC-DC converters using pulse frequency modulation(PFM)or any power save mode proper care must be taken to ensure that the measurements are accurate. An accurate PFM mode efficiency measurement is critical for systems which require high efficiency at low loads such as in smart home systems tablets wearables and metering.
Modellreihe
Serie: TPS60251 (2)
- TPS60251RTWR TPS60251RTWT
Herstellerklassifikation
- Semiconductors > Power Management > LED Driver > Backlight LED Driver