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參數(shù)資料
| 型號： | TPS61045DRB |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | DIGITALLY ADJUSTABLE LCD BOOST CONVERTER |
| 中文描述： | 數(shù)字可調(diào)液晶Boost變換器 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大?。?/td> | 499K |
| 代理商： | TPS61045DRB |
www.ti.com
TPS61045
SLVS440A–JANUARY 2003–REVISED SEPTEMBER 2003
APPLICATION INFORMATION (continued)
Table 4. Possible Schottky Diode Selection
COMPONENT SUPPLIER
REVERSE VOLTAGE
ON Semiconductor MBR0530
30 V
ON Semiconductor MBR0520
20 V
ON Semiconductor MBRM120L
20 V
Toshiba CRS02
30 V
Zetex CHZS400
40 V
LAYOUT CONSIDERATIONS
As for all switching power supplies the layout is an important step in the design, especially at high peak currents
and switching frequencies. If the layout is not carefully implemented the regulator can show noise problems and
duty cycle jitter.
The input capacitor must be placed as close as possible to the input pin for good input-voltage filtering. The
inductor and diode must be placed as close as possible to the switch pin (SW) to minimize noise coupling into
other circuits. Since the feedback pin and network is a high impedance circuit, the feedback network must be
routed away from the inductor.
THERMAL CONSIDERATIONS
The TPS61045 is available in a thermally enhanced QFN package. The package includes a thermal pad,
improving the thermal capabilities of the package. See QFN/SON PCB attachment application note (SLUA271).
The thermal resistance junction to ambient (R
Θ
JA
) of the QFN package depends on the PCB layout. By using
thermal vias and wide PCB, traces improve thermal resistance (R
Θ
JA
). Under normal operation conditions no
PCB vias are required for the thermal pad. However, the thermal pad must be soldered to the PCB.
15
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS61045DRBR | 功能描述:LED顯示驅(qū)動器 28-V 85% Eff Boost Converter RoHS:否 制造商:Micrel 數(shù)位數(shù)量:5 片段數(shù)量: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PLCC-44 工作電源電壓:4.75 V to 11 V 最大電源電流:10 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| TPS61045DRBRG4 | 功能描述:LED顯示驅(qū)動器 28-V 85% Eff Boost Converter RoHS:否 制造商:Micrel 數(shù)位數(shù)量:5 片段數(shù)量: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PLCC-44 工作電源電壓:4.75 V to 11 V 最大電源電流:10 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| TPS61045DRBT | 功能描述:LED顯示驅(qū)動器 28-V 85% Eff Boost Converter RoHS:否 制造商:Micrel 數(shù)位數(shù)量:5 片段數(shù)量: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PLCC-44 工作電源電壓:4.75 V to 11 V 最大電源電流:10 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| TPS61045DRBTG4 | 功能描述:LED照明驅(qū)動器 28-V 85% Eff Boost Converter RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| TPS61045EVM-231 | 功能描述:電源管理IC開發(fā)工具 TPS61045-231 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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