- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄384590 > LD1117-15-AA3-B-R (友順科技股份有限公司) 5.0 AMP POSITIVE VOLTAGE REGULATOR PDF資料下載
參數(shù)資料
| 型號(hào)： | LD1117-15-AA3-B-R |
| 廠商： | 友順科技股份有限公司 |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| 中文描述： | 5.0放大器正電壓穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 11/12頁(yè) |
| 文件大小： | 353K |
| 代理商： | LD1117-15-AA3-B-R |
LD1117/A
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
11 of 12
QW-R102-006,Q
APPLICAT ION NOT E of LD1117/A ADJ US T ABLE
The LD1117/A ADJUSTABLE has a reference voltage of between the OUT and ADJ pins. I
ADJ
is 60
μ
A typ.
(120
μ
A max.) and
Δ
I
ADJ
is 1
μ
A typ. (5
μ
A max.).
R1 is normally fixed to 120
Ω
.
From figure 4 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
.
Usually R2 value is in the range of few K
, so the R2 X I
ADJ
product could be neglected; then the above
expression becomes: V
OUT
=V
REF
(1+R2/R1)
For better load regulation, realize a good Kelvin connection of R1 and R2 is important. Particularly 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 10
μ
F electrolytic
capacitor placed in parallel to the R2 resistor (See Fig. 5)
IN
OUT
ADJ
UTC LD1117/A
+
+
10
μ
F
10
μ
F
R1
120
Ω
V
IN
V
OUT
V
REF
R2
FIG.4 Adjustable Output Voltage Application Circuit
FIG.5 Adjustable Output Voltage Application with improved Ripple Rejection.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LD1117-15-AA3-C-R | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| LD1117-15-AB3-A-R | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| LD1117-15-AB3-B-R | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| LD1117-15-AB3-C-R | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| LD1117-15-S08-A-R | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LD1117-15-AA3-C-R | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS |
| LD1117-15-AB3-A-R | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS |
| LD1117-15-AB3-B-R | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS |
| LD1117-15-AB3-C-R | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS |
| LD1117-15-S08-A-R | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。