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參數資料
| 型號： | PT5542N |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.75 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA3 |
| 文件頁數： | 6/8頁 |
| 文件大?。?/td> | 198K |
| 代理商： | PT5542N |
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes continued
Fault Protection
Unlike a “Buck” or step-down regulator it is not possible
to provide a boost regulator with short-circuit protection.
As revealed in the block diagram of Figure 1-1, inhibiting
the MOSFET switching action only disables the regulator’s
boost function. Therefore under a severe output impedance
fault the control circuit cannot disconnect the output from
the input source.
To prevent an output over-current or short-circuit fault
from propagating to the input bus, a fuse or equivalent
over-current protection is recommended at the input of
the module. Whatever form of protection is selected, it is
important to note that the impedance and/or voltage drop
of the series element will add to the regulator’s minimum
input voltage requirements. Power up may also be affected.
The combination of an input surge current with an im-
pedance in series with the regulator input may cause the
input voltage to momentarily dip back below the UVLO
threshold. Ensure that the fuse rating or input current
limit threshold are designed with a generous margin.
PT5540 Series
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| PT5544 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8V 1.75A. 5-V Input Step-Up (Boost) ISR |
| PT5544A | 功能描述:DC/DC轉換器 8V 1.75A,5-V INPUT STEP-UP ISR RoHS:否 制造商:Murata 產品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| PT5544C | 功能描述:開關變換器、穩(wěn)壓器與控制器 8V 1.75A 5-V Input Step-Up ISR RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| PT5544N | 功能描述:REG 8V 1.75A 4.5/7VIN VERT RoHS:否 類別:電源 - 板載 >> DC DC Converters 系列:PT5540 設計資源:VI-200, VI-J00 Design Guide, Appl Manual 標準包裝:1 系列:* 類型:隔離 輸出數:1 電壓 - 輸入（最?。?55V 電壓 - 輸入（最大）:100V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:* 電源（瓦） - 制造商系列:200W 電壓 - 隔離:* 特點:* 安裝類型:通孔 封裝/外殼:9-FinMod 尺寸/尺寸:4.60" L x 1.86" W x 0.79" H（116.8mm x 47.2mm x 20.1mm） 包裝:散裝 工作溫度:-55°C ~ 85°C 效率:* 電源（瓦特）- 最大:* |
| PT5545 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:9V 1.5A. 5-V Input Step-Up (Boost) ISR |
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