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參數(shù)資料
| 型號(hào)： | LD1117V30C |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | OPERATOR P/B 22MM ILLUM MAINT RND |
| 中文描述： | 低壓差固定或可調(diào)正電壓調(diào)節(jié)器 |
| 文件頁(yè)數(shù)： | 17/28頁(yè) |
| 文件大?。?/td> | 624K |
| 代理商： | LD1117V30C |
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LD1117 SERIES
17/28
Figure 10: Post-Regulated Dual Supply
LD1117 ADJUSTABLE: APPLICATION NOTE
The LD1117 ADJUSTABLE has a thermal
stabilized 1.25±0.012V reference voltage between
the OUT and ADJ pins. I
ADJ
is 60μA typ. (120μA
max.) and
I
ADJ
is 1μA typ. (5μA max.).
R1 is normally fixed to 120
. From figure 7 we
obtain:
V
OUT
= V
REF
+ R2 (I
ADJ
+I
R1
) = V
REF
+ R2 (I
ADJ
+V
REF
/R1) = V
REF
(1 + R2 / R1) + R2 x I
ADJ
.
In normal application R2 value is in the range of
few kohm, so the R2 x I
DJ
product could not be
considered in the V
OUT
calculation; then the
above expression becomes:
V
OUT
= V
REF
(1 + R2 / R1).
In order to have the better load regulation it is
important to realize a good Kelvin connection of
R1 and R2 resistors. In particular R1 connection
must be realized very close to OUT and ADJ pin,
while R2 ground connection must be placed as
near as possible to the negative Load pin. Ripple
rejection can be improved by introducing a 10μF
electrolytic capacitor placed in parallel to the R2
resistor (see Fig.8).
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| LD1117V33 | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LD1117V33 | 功能描述:低壓差穩(wěn)壓器 - LDO 3.3V 0.8A Positive 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: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LD1117V33 | 制造商:STMicroelectronics 功能描述:IC V REG LDO +3.3V 1117 TO-220-3 |
| LD1117V33C | 功能描述:低壓差穩(wěn)壓器 - LDO 3.3V 0.8A Positive 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: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LD1117V33C | 制造商:STMicroelectronics 功能描述:Voltage Regulator IC |
| LD1117V33C-DG | 功能描述:Linear Voltage Regulator IC Positive Fixed 1 Output 3.3V 800mA TO-220 制造商:stmicroelectronics 系列:- 包裝:管件 零件狀態(tài):有效 穩(wěn)壓器拓?fù)?正，固定式 電壓 - 輸出:3.3V 電流 - 輸出:800mA 電壓 - 跌落（典型值）:1.1V @ 800mA 穩(wěn)壓器數(shù):1 電壓 - 輸入:最高 15V 電流 - 限制（最小值）:- 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:TO-220-3 供應(yīng)商器件封裝:TO-220 標(biāo)準(zhǔn)包裝:50 |
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