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參數(shù)資料
| 型號： | LNBP10LPUR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO8 |
| 封裝： | 5 X 6 MM, ROHS COMPLIANT, DFN-8 |
| 文件頁數(shù)： | 2/21頁 |
| 文件大?。?/td> | 439K |
| 代理商： | LNBP10LPUR |
Detailed description and application hints
LNBP8L, LNBP9L, LNBP10L, LNBP11L
10/21
Doc ID 15153 Rev 2
has elapsed, the output goes low for a time of TOFF = 12 x TON. This keeps the
power dissipated by the device low in overload conditions, and avoids the need for
an oversized heat sink in this condition. For the IPPAK package, when the
overload or the short-circuit occurs, the device clamps the output current in a
range between 550 mA and 850 mA.
7.
The following equation is used to calculate the peak-to-peak voltage of VOUT:
Equation 1
VOUT(AC) = VEXTM(AC) x GEXTM
where VOUT(AC) and VEXTM(AC) are, respectively, the peak-to-peak voltage of VOUT and
VEXTM. GEXTM is the external modulation gain.
6.1
Input voltage protection
In some cases two or more receivers share the same coaxial cable, rendering their outputs
hard-paralleled, so the same voltage is present at the outputs of the receivers. If a receiver
is not disconnected at the mains, a current will flow from the OUTPUT to the VCC1 or VCC2
pins, depending the EN/VSEL pin setting. To avoid this, two diodes (only one for the IPPAK
diodes do not cause a change at VOUT, but only a voltage drop, which can be minimized by
current of almost 1 A and a breakdown voltage of 30 V (suggested type is 1N4001 or
BYV10-30). Be aware that the minimum voltage needed at the VCC pins must be respected,
considering the voltage drop across the input diodes).
6.2
Single supply for the DFN package
If only one power supply source is available, the VCC1 and VCC2 pins can be powered by the
same power source without affecting the performance of other circuits, at the cost of higher
power losses in the device and higher heat sink surface. Also, in order to reduce the power
dissipation in the device, an appropriate-value resistor can be inserted in series with the
Figure 6.
EXTM application circuit
VCC
EN/VSEL (Tristate)
OUTPUT
GND
EXTM
D1
1N4001
Vextm
23V
LNBP8/9L
C2
220nF
C1
10F
LNB OUTPUT
C3
100nF
D2
1N5818
C4
1F
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LNBP10SP | 制造商:STMicroelectronics 功能描述:REG STD LIN SELECTABLE POS 13V/18V 0.8A 12PIN(10+2TAB) PWRSO - Rail/Tube |
| LNBP10SP-TR | 功能描述:線性穩(wěn)壓器 - 標準 LNBP voltage reg RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| LNBP11 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LNB SUPPLY AND CONTROL VOLTAGE REGULATOR PARALLEL INTERFACE |
| LNBP11LPUR | 功能描述:線性穩(wěn)壓器 - 標準 LNB SUP/CTRL VLT REG RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| LNBP11SP | 制造商:STMicroelectronics 功能描述:REG STD LIN SELECTABLE POS 13V/18V 0.8A 12PIN(10+2TAB) PWRSO - Rail/Tube |
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