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參數(shù)資料
| 型號： | TPS54226PWP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, PDSO20 |
| 封裝： | GREEN, PLASTIC, HTSSOP-14 |
| 文件頁數(shù)： | 7/27頁 |
| 文件大小： | 923K |
| 代理商： | TPS54226PWP |
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SLVSA14D
– OCTOBER 2009 – REVISED FEBRUARY 2011
Input Capacitor Selection
The TPS54226 requires an input decoupling capacitor and a bulk capacitor is needed depending on the
application. A ceramic capacitor over 10
μF is recommended for the decoupling capacitor. An additional 0.1 F
capacitor from pin 14 to ground is recommended to improve the stability of the over-current limit function. The
capacitor voltage rating needs to be greater than the maximum input voltage.
Bootstrap Capacitor Selection
A 0.1
F ceramic capacitor must be connected between the VBST to SW pin for proper operation. It is
recommended to use a ceramic capacitor.
VREG5 Capacitor Selection
A 1.0
F ceramic capacitor must be connected between the VREG5 to GND pin for proper operation. It is
recommended to use a ceramic capacitor.
THERMAL INFORMATION
The PWP 14 pin package incorporates an exposed PowerPAD
and the QFN 16 pin package incorporates a
similar exposed thermal pad. These exposed thermal pads are designed to be connected to an external heatsink.
The thermal pad must be soldered directly to the printed board (PCB). After soldering, the PCB can be used as a
heatsink. In addition, through the use of thermal vias, the thermal pad can be attached directly to the appropriate
copper plane shown in the electrical schematic for the device, or alternatively, can be attached to a special
heatsink structure designed into the PCB. This design optimizes the heat transfer from the integrated circuit (IC).
For additional information on the PowerPAD
package and how to use the advantage of its heat dissipating
abilities, see Technical Brief, PowerPAD
Thermally Enhanced Package, Texas Instruments Literature No.
SLMA002 and Application Brief, PowerPAD
Made Easy, Texas Instruments Literature No. SLMA004.
The exposed thermal pad dimensions for the PWP 14 pin and QFN 16 pin packages are shown in the Thermal
Pad Mechanical Data section of this data sheet.
2009–2011, Texas Instruments Incorporated
15
Product Folder Link(s): TPS54226
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS54226PWP | 制造商:Texas Instruments 功能描述:DC/DC STEP DOWN CONVERTER IC 700kHz HT 制造商:Texas Instruments 功能描述:IC, SYNC STEP-DOWN DC/DC CONV, HTSSOP-14 |
| TPS54226PWPR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 4.5-18V 2A Sync Step Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS54226RGTR | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 4.5-18V Inp,2A Synch Step Down Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| TPS54226RGTT | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 4.5-18V Inp,2A Synch Step Down Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| TPS54227 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4.5V to 18V Input, 2-A SYNCHRONOUS STEP DOWN SWIFT |
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