參數(shù)資料
型號： LD1117F25C
廠商： 意法半導(dǎo)體
元件分類： 其它接口
英文描述： TERMINAL
中文描述： IGBT模塊
文件頁數(shù)： 17/28頁
文件大?。?/td> 624K
代理商： LD1117F25C
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).
相關(guān)PDF資料
PDF描述
LD1117F28 TERMINAL
LD1117F30 TERMINAL
LD1117F30C TERMINAL
LD1117F33 5.0 AMP POSITIVE VOLTAGE REGULATOR
LD1117F33C 5.0 AMP POSITIVE VOLTAGE REGULATOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LD1117F28 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117F30 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117F30C 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117F33 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117F33C 功能描述:IC REG LDO 3.3V .95A TO220F RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:3.1V 輸入電壓:最高 5.5V 電壓 - 壓降（標(biāo)準(zhǔn)）:- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:300mA 電流 - 限制（最?。?420mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細(xì)型，TSOT-23-5 供應(yīng)商設(shè)備封裝:TSOT-23-5 包裝:帶卷 (TR)
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