Datasheet Texas Instruments TPS60251RTWR — 数据表
制造商 | Texas Instruments |
系列 | TPS60251 |
零件号 | TPS60251RTWR |
用于具有I2C接口24-WQFN -40至85的7个WLED的高效电荷泵
数据表
High Efficiency Charge Pump for 7 WLEDs with I2C Interface datasheet
PDF, 901 Kb, 修订版: C, 档案已发布: Nov 6, 2007
从文件中提取
价格
状态
Lifecycle Status | Active (Recommended for new designs) |
Manufacture's Sample Availability | No |
打包
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 | 3000 | 3000 | 3000 |
Carrier | LARGE T&R | LARGE T&R | LARGE T&R |
Device Marking | 60251 | TPS60251 | TPS |
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 | 下载 | 下载 | 下载 |
参数化
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 |
生态计划
RoHS | Compliant |
设计套件和评估模块
- Evaluation Modules & Boards: TPS60251EVM-192
TPS60251 Evaluation Module
Lifecycle Status: Active (Recommended for new designs)
应用须知
- Ballast Resistor Calculation – Current Matching in Parallel LEDsPDF, 351 Kb, 档案已发布: 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, 修订版: B, 档案已发布: Jun 15, 2017
- Performing Accurate PFM Mode Efficiency Measurements (Rev. A)PDF, 418 Kb, 修订版: A, 档案已发布: 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.
模型线
系列: TPS60251 (2)
- TPS60251RTWR TPS60251RTWT
制造商分类
- Semiconductors > Power Management > LED Driver > Backlight LED Driver