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參數(shù)資料
| 型號(hào)： | LMS1587CS-ADJ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | BOARD INTERFACE KGZ/GMS 0-100% |
| 中文描述： | 1.225 V-1.275 V ADJUSTABLE POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSSO3 |
| 封裝： | TO-263, 3 PIN |
| 文件頁(yè)數(shù)： | 5/7頁(yè) |
| 文件大小： | 128K |
| 代理商： | LMS1587CS-ADJ |
Application Note
Output Voltage
The adjustable version develops at 1.25V reference voltage,
(V
), between the output and the adjust terminal. As
shown in
Figure 1
, this voltage is applied across resistor R1
to generate a constant current I1. This constant current then
flows through R2. The resulting voltage drop across R2 adds
to the reference voltage to sets the desired output voltage.
The current I
ADJ
from the adjustment terminal introduces an
output error. But since it is small (120μA max), it becomes
negligible when R1 is in the 100
range.
For fixed voltage devices, R1 and R2 are integrated inside
the devices.
20099872
FIGURE 1. Basic Adjustable Regulator
L
www.national.com
5
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMS1587CS-ADJ/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LMS1587CS-ADJ/NOPB | 制造商:Texas Instruments 功能描述:Linear Voltage Regulator IC |
| LMS1587CSX-1.5 | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LMS1587CSX-1.5/J7001775 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LMS1587CSX-1.5/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO 3A LDO FAST RESPONSE REGULATORS RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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