Datasheet Texas Instruments TPS60255RTET — Datenblatt

7-Kanal-Hochleistungs-175-mA-Ladepumpe für weiße LED-Hintergrundbeleuchtung 16-WQFN -40 bis 85

Datenblätter

PDF, 926 Kb, Datei veröffentlicht: Mar 24, 2008

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Lifecycle Status	Active (Recommended for new designs)
Manufacture's Sample Availability	No

Number of Channels	7
Duty Cycle(Max)	100 %
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	16WQFN: 9 mm2: 3 x 3(WQFN) PKG
Peak Efficiency	93 %
Rating	Catalog
Shutdown Current(Typ)	0.1 uA
Special Features	Analog Dimming,EasyScale 1-Wire Interface,Enable/Shutdown,Fault Detection,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)	2.7 V
Vout(Max)	6.5 V
Vout(Min)	2.7 V

RoHS

Compliant

Evaluation Modules & Boards: TPS60255EVM-262
TPS60255EVM-262 Evaluation Module
Lifecycle Status: Active (Recommended for new designs)
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Ballast Resistor Calculation вЂ“ Current Matching in Parallel LEDs
PDF, 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
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Extending the Soft Start Time Without a Soft Start Pin (Rev. B)
PDF, 387 Kb, Revision: B, Datei veröffentlicht: Jun 15, 2017
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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.

Serie: TPS60255 (2)